Tomas reported the following build error:
net/built-in.o: In function `ieee80211_unregister_hw':
(.text+0x10f0e1): undefined reference to `unregister_inet6addr_notifier'
net/built-in.o: In function `ieee80211_register_hw':
(.text+0x10f610): undefined reference to `register_inet6addr_notifier'
make: *** [vmlinux] Error 1
when built IPv6 as a module.
So we have to statically link these symbols.
Reported-by: Tomas Melin <tomas.melin@iki.fi>
Cc: Tomas Melin <tomas.melin@iki.fi>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: YOSHIFUJI Hidaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid
Luckily, this can only be done by root, but still is a nasty bug.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJRaK2+AAoJEOdOSU1xswtMw48IAJPcSNMl1+epx5cPw8pwf+y6
YYvs/Ud3BMPBL+mpNPGNFWY+dWJsAtCtAgkLi0WgdL+b9iPNZrmQqqcP5xWV4uKV
vRX2SPCQcyEn5keNnFdN3fN1R0+Gj4V8kLvxPqugzNrO9EHejx+TJFWjrONzkcSy
g90lY45jfGWW0OS4GuSwHFhKDgcx8/kgb4Whv+xrKzTuX2QkU1BhG9WPsjiHWiL5
WRYjC4LWafrWaPd4cIkzMqj1eU/hL8BkiLLQHM1Tw8yD7t8OPzgmuJMZEh6Cx1iW
/Xrm5QkNEcqQ/vSAC6aWUi22VEgRYDLg8WjngwuMgY1Qa3LE2ex8cUDyk7lJbas=
=SFA8
-----END PGP SIGNATURE-----
Merge tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull ftrace fixes from Steven Rostedt:
"Namhyung Kim found and fixed a bug that can crash the kernel by simply
doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid
Luckily, this can only be done by root, but still is a nasty bug."
* tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
tracing: Fix possible NULL pointer dereferences
Nothing is using it yet, but this will allow us to delay the open-time
checks to use time, without breaking the normal UNIX permission
semantics where permissions are determined by the opener (and the file
descriptor can then be passed to a different process, or the process can
drop capabilities).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch attempts to fix:
https://bugzilla.kernel.org/show_bug.cgi?id=56461
The symptom is a crash and messages like this:
chrome: Corrupted page table at address 34a03000
*pdpt = 0000000000000000 *pde = 0000000000000000
Bad pagetable: 000f [#1] PREEMPT SMP
Ingo guesses this got introduced by commit 611ae8e3f5 ("x86/tlb:
enable tlb flush range support for x86") since that code started to free
unused pagetables.
On x86-32 PAE kernels, that new code has the potential to free an entire
PMD page and will clear one of the four page-directory-pointer-table
(aka pgd_t entries).
The hardware aggressively "caches" these top-level entries and invlpg
does not actually affect the CPU's copy. If we clear one we *HAVE* to
do a full TLB flush, otherwise we might continue using a freed pmd page.
(note, we do this properly on the population side in pud_populate()).
This patch tracks whenever we clear one of these entries in the 'struct
mmu_gather', and ensures that we follow up with a full tlb flush.
BTW, I disassembled and checked that:
if (tlb->fullmm == 0)
and
if (!tlb->fullmm && !tlb->need_flush_all)
generate essentially the same code, so there should be zero impact there
to the !PAE case.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Artem S Tashkinov <t.artem@mailcity.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Previously the acpiphp driver registered itself as an ACPI PCI subdriver,
so its callbacks were invoked when creating/destroying PCI root
buses to manage ACPI-based PCI hotplug slots. But it doesn't handle
P2P bridge hotplug events, so it will cause strange behaviour if there
are hotplug slots associated with a hot-removed P2P bridge.
This patch fixes this issue by:
1) Directly hooking into PCI core to update hotplug slot devices when
creating/destroying PCI buses through:
pci_{add|remove}_bus() -> acpi_pci_{add|remove}_bus()
2) Getting rid of unused ACPI PCI subdriver-related code
It also cleans up unused code in the acpiphp driver.
[bhelgaas: keep acpi_pci_add_bus() stub for CONFIG_ACPI=n]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Currently the pci_slot driver doesn't update PCI slot devices when PCI
device hotplug event happens, which may cause memory leak and returning
stale information to user.
Now the pci_slot driver has been changed as built-in driver, so invoke
PCI slot enumeration and destroy routines directly from the PCI core.
And remove ACPI PCI sub-driver related code because it isn't needed
any more.
[bhelgas: removed "extern" from function declarations]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Prepare two stub functions to handle ACPI PCI slots and ACPI PCI hotplug
slots, which will be invoked by the PCI core when creating/destroying
PCI buses.
It will be used to get rid of ACPI PCI subdrivers for pci_slot and
acpiphp, and eventually remove the ACPI PCI subdriver mechanism.
And it will also be used to handle ACPI PCI (hotplug) slots in a unified
way, both at boot time and for PCI hotplug operations.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Myron Stowe <myron.stowe@redhat.com>
On ACPI-based platforms, the pci_slot driver creates PCI slot devices
according to information from ACPI tables by registering an ACPI PCI
subdriver. The ACPI PCI subdriver will only be called when creating/
destroying PCI root buses, and it won't be called when hot-plugging
P2P bridges. It may cause stale PCI slot devices after hot-removing
a P2P bridge if that bridge has associated PCI slots. And the acpiphp
driver has the same issue too.
This patch introduces two hook points into the PCI core, which will
be invoked when creating/destroying PCI buses for PCI host and P2P
bridges. They could be used to setup/destroy platform dependent stuff
in a unified way, both at boot time and for PCI hotplug operations.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Myron Stowe <myron.stowe@redhat.com>
As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to
be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the
ftrace_pid_fops is defined when DYNAMIC_FTRACE is not.
Cc: stable@vger.kernel.org
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Currently set_ftrace_pid and set_graph_function files use seq_lseek
for their fops. However seq_open() is called only for FMODE_READ in
the fops->open() so that if an user tries to seek one of those file
when she open it for writing, it sees NULL seq_file and then panic.
It can be easily reproduced with following command:
$ cd /sys/kernel/debug/tracing
$ echo 1234 | sudo tee -a set_ftrace_pid
In this example, GNU coreutils' tee opens the file with fopen(, "a")
and then the fopen() internally calls lseek().
Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Pablo Neira Ayuso says:
====================
The following patchset contains late netfilter fixes for your net
tree, they are:
* Don't drop segmented TCP packets in the SIP helper, we've got reports
from users that this was breaking communications when the SIP phone
messages are larger than the MTU, from Patrick McHardy.
* Fix refcount leak in the ipset list set, from Jozsef Kadlecsik.
* On hash set resizing, the nomatch flag was lost, thus entirely inverting
the logic of the set matching, from Jozsef Kadlecsik.
* Fix crash on NAT modules removal. Timer expiration may race with the
module cleanup exit path while deleting conntracks, from Florian
Westphal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The smpboot threads rely on the park/unpark mechanism which binds per
cpu threads on a particular core. Though the functionality is racy:
CPU0 CPU1 CPU2
unpark(T) wake_up_process(T)
clear(SHOULD_PARK) T runs
leave parkme() due to !SHOULD_PARK
bind_to(CPU2) BUG_ON(wrong CPU)
We cannot let the tasks move themself to the target CPU as one of
those tasks is actually the migration thread itself, which requires
that it starts running on the target cpu right away.
The solution to this problem is to prevent wakeups in park mode which
are not from unpark(). That way we can guarantee that the association
of the task to the target cpu is working correctly.
Add a new task state (TASK_PARKED) which prevents other wakeups and
use this state explicitly for the unpark wakeup.
Peter noticed: Also, since the task state is visible to userspace and
all the parked tasks are still in the PID space, its a good hint in ps
and friends that these tasks aren't really there for the moment.
The migration thread has another related issue.
CPU0 CPU1
Bring up CPU2
create_thread(T)
park(T)
wait_for_completion()
parkme()
complete()
sched_set_stop_task()
schedule(TASK_PARKED)
The sched_set_stop_task() call is issued while the task is on the
runqueue of CPU1 and that confuses the hell out of the stop_task class
on that cpu. So we need the same synchronizaion before
sched_set_stop_task().
Reported-by: Dave Jones <davej@redhat.com>
Reported-and-tested-by: Dave Hansen <dave@sr71.net>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Acked-by: Peter Ziljstra <peterz@infradead.org>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: dhillf@gmail.com
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1304091635430.21884@ionos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The registers for the Samsung S3C serial port are currently defined in
the platform specific arch/arm/plat-samsung/include/plat/regs-serial.h
file, which is not visible to multiplatform capable drivers.
Unfortunately, it is not possible to move the file into a more local
place as we should normally try to, because the same registers
may be used in one of four places:
* In the driver itself
* In platform-independent ARM code for early debug output
* In platform_data definitions
* In the Samsung platform power management code
I have also found no way to logically split out a platform_data
file, other than possibly move everything into
include/linux/platform_data, which also felt wrong. The only
part of this file that makes sense to keep specific to the s3c24xx
platform are the virtual and physical addresses defined here,
which are needed in no other location.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that devtmpfs is caring about uid/gid, we need to use the correct
internal types so users who have USER_NS enabled will have things work
properly for them.
Thanks to Eric for pointing this out, and the patch review.
Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The s3c-fb driver requires header files from the samsung platforms
to find its platform_data definition, but this no longer works on
multiplatform kernels, so let's move the data into a new header
file under include/linux/platform_data.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-fbdev@vger.kernel.org
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Pull networking fixes from David Miller:
1) cfg80211_conn_scan() must be called with the sched_scan_mutex, fix
from Artem Savkov.
2) Fix regression in TCP ICMPv6 processing, we do not want to treat
redirects as socket errors, from Christoph Paasch.
3) Fix several recvmsg() msg_name kernel memory leaks into userspace,
in ATM, AX25, Bluetooth, CAIF, IRDA, s390 IUCV, L2TP, LLC, Netrom,
NFC, Rose, TIPC, and VSOCK. From Mathias Krause and Wei Yongjun.
4) Fix AF_IUCV handling of segmented SKBs in recvmsg(), from Ursula
Braun and Eric Dumazet.
5) CAN gw.c code does kfree() on SLAB cache memory, use
kmem_cache_free() instead. Fix from Wei Yongjun.
6) Fix LSM regression on TCP SYN/ACKs, some LSMs such as SELINUX want
an skb->sk socket context available for these packets, but nothing
else requires it. From Eric Dumazet and Paul Moore.
7) Fix ipv4 address lifetime processing so that we don't perform
sleepable acts inside of rcu_read_lock() sections, do them in an
rtnl_lock() section instead. From Jiri Pirko.
8) mvneta driver accidently sets HW features after device registry, it
should do so beforehand. Fix from Willy Tarreau.
9) Fix bonding unload races more correctly, from Nikolay Aleksandrov
and Veaceslav Falico.
10) rtnl_dump_ifinfo() and rtnl_calcit() invoke nlmsg_parse() with wrong
header size argument. Fix from Michael Riesch.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
lsm: add the missing documentation for the security_skb_owned_by() hook
bnx2x: Prevent null pointer dereference in AFEX mode
e100: Add dma mapping error check
selinux: add a skb_owned_by() hook
can: gw: use kmem_cache_free() instead of kfree()
netrom: fix invalid use of sizeof in nr_recvmsg()
qeth: fix qeth_wait_for_threads() deadlock for OSN devices
af_iucv: fix recvmsg by replacing skb_pull() function
rtnetlink: Call nlmsg_parse() with correct header length
bonding: fix bonding_masters race condition in bond unloading
Revert "bonding: remove sysfs before removing devices"
net: mvneta: enable features before registering the driver
hyperv: Fix RNDIS send_completion code path
hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
net: ipv4: fix schedule while atomic bug in check_lifetime()
net: ipv4: reset check_lifetime_work after changing lifetime
bnx2x: Fix KR2 rapid link flap
sctp: remove 'sridhar' from maintainers list
VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()
VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
...
Unfortunately we didn't catch the missing comments earlier when the
patch was merged.
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The __weak annotation on the pcibios_get_phb_of_node() declaration
causes *every* definition to be marked "weak." The linker then
selects one based on link order, which may be the wrong one.
Gabor found that on MIPS, the linker selected the generic implementation
from drivers/pci even though arch/mips supplied a definition without the
__weak annotation:
$ mipsel-openwrt-linux-readelf -s arch/mips/pci/built-in.o \
drivers/pci/built-in.o vmlinux.o | grep pcibios_get_phb_of_node
86: 0000046c 12 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
1430: 00012e2c 104 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
31898: 0017e4ec 104 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
This removes the __weak annotation from the pcibios_get_phb_of_node()
declaration so arch-specific non-weak implementations work reliably.
Suggested-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
And make use of it in b43. This fixes a regression introduced with
49d55cef5b
b43: N-PHY: implement spurious tone avoidance
This commit made BCM4322 use only MCS 0 on channel 13, which of course
resulted in performance drop (down to 0.7Mb/s).
Reported-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Pull vfs fixes from Al Viro:
"A nasty bug in fs/namespace.c caught by Andrey + a couple of less
serious unpleasantness - ecryptfs misc device playing hopeless games
with try_module_get() and palinfo procfs support being... not quite
correctly done, to be polite."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
mnt: release locks on error path in do_loopback
palinfo fixes
procfs: add proc_remove_subtree()
ecryptfs: close rmmod race
If a resize is triggered the nomatch flag is not excluded at hashing,
which leads to the element missed at lookup in the resized set.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
just what it sounds like; do that only to procfs subtrees you've
created - doing that to something shared with another driver is
not only antisocial, but might cause interesting races with
proc_create() and its ilk.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
In UP and non-preempt respectively, the spinlocks and preemption
disable/enable points are stubbed out entirely, because there is no
regular code that can ever hit the kind of concurrency they are meant to
protect against.
However, while there is no regular code that can cause scheduling, we
_do_ end up having some exceptional (literally!) code that can do so,
and that we need to make sure does not ever get moved into the critical
region by the compiler.
In particular, get_user() and put_user() is generally implemented as
inline asm statements (even if the inline asm may then make a call
instruction to call out-of-line), and can obviously cause a page fault
and IO as a result. If that inline asm has been scheduled into the
middle of a preemption-safe (or spinlock-protected) code region, we
obviously lose.
Now, admittedly this is *very* unlikely to actually ever happen, and
we've not seen examples of actual bugs related to this. But partly
exactly because it's so hard to trigger and the resulting bug is so
subtle, we should be extra careful to get this right.
So make sure that even when preemption is disabled, and we don't have to
generate any actual *code* to explicitly tell the system that we are in
a preemption-disabled region, we need to at least tell the compiler not
to move things around the critical region.
This patch grew out of the same discussion that caused commits
79e5f05edc ("ARC: Add implicit compiler barrier to raw_local_irq*
functions") and 3e2e0d2c22 ("tile: comment assumption about
__insn_mtspr for <asm/irqflags.h>") to come about.
Note for stable: use discretion when/if applying this. As mentioned,
this bug may never have actually bitten anybody, and gcc may never have
done the required code motion for it to possibly ever trigger in
practice.
Cc: stable@vger.kernel.org
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 90ba9b1986 (tcp: tcp_make_synack() can use alloc_skb())
broke certain SELinux/NetLabel configurations by no longer correctly
assigning the sock to the outgoing SYNACK packet.
Cost of atomic operations on the LISTEN socket is quite big,
and we would like it to happen only if really needed.
This patch introduces a new security_ops->skb_owned_by() method,
that is a void operation unless selinux is active.
Reported-by: Miroslav Vadkerti <mvadkert@redhat.com>
Diagnosed-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-security-module@vger.kernel.org
Acked-by: James Morris <james.l.morris@oracle.com>
Tested-by: Paul Moore <pmoore@redhat.com>
Acked-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Let's not burden ia64 with checks in the common efivars code that we're not
writing too much data to the variable store. That kind of thing is an x86
firmware bug, plain and simple.
efi_query_variable_store() provides platforms with a wrapper in which they can
perform checks and workarounds for EFI variable storage bugs.
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
It should be left to the drivers to enable and disable the device on the
MEI bus when e.g getting probed.
For drivers to be able to safely call the enable and disable hooks, the
mei_cl_ops must be set before it's probed and thus this should happen
before registering the device on the MEI bus. Hence the mei_cl_add_device()
prototype change.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
which mistakenly changed an 'int' return type to a 'bool'. Broken
by 4dce8ba94c.
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings.
IMO a mild regression, given that libata previously did not DMA to a stack
buffer. Broken by 803739d2.
5) Fix regression impacting SMART and smartd, broken by 84a9a8cd9.
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Merge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
Pull libata fixes from Jeff Garzik:
"The HDIO_DRIVE_* fix is really the biggie.
1) Fix ATAPI regression, noticed mainly on tape drives, due to a
commit which mistakenly changed an 'int' return type to a 'bool'.
Broken by commit 4dce8ba94c ("libata: Use 'bool' return value for
ata_id_XXX")
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings. IMO
a mild regression, given that libata previously did not DMA to a
stack buffer. Broken by commit commit 803739d25c ("[libata]
replace sata_settings with devslp_timing")
5) Fix regression impacting SMART and smartd, broken by commit
84a9a8cd9d ("[libata] Set proper SK when CK_COND is set")"
* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] Fix HDIO_DRIVE_* ioctl() Linux 3.9 regression
libata: fix DMA to stack in reading devslp_timing parameters
ata_piix: Fix DVD not dectected at some Haswell platforms
libata: Set max sector to 65535 for Slimtype DVD A DS8A8SH drive
libata: Use integer return value for atapi_command_packet_set
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches
from the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during
the perf function tracing, and that stub function wont have the
"control" flag set and cause a nasty warning when running perf.
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Merge tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"This includes three fixes. Two fix features added in 3.9 and one
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches from
the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during the
perf function tracing, and that stub function wont have the "control"
flag set and cause a nasty warning when running perf."
* tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Do not call stub functions in control loop
ftrace: Consistently restore trace function on sysctl enabling
tracing: Fix race with update_max_tr_single and changing tracers
When receiving data messages, the "BUG_ON(skb->len < skb->data_len)" in
the skb_pull() function triggers a kernel panic.
Replace the skb_pull logic by a per skb offset as advised by
Eric Dumazet.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function tracing control loop used by perf spits out a warning
if the called function is not a control function. This is because
the control function references a per cpu allocated data structure
on struct ftrace_ops that is not allocated for other types of
functions.
commit 0a016409e4 "ftrace: Optimize the function tracer list loop"
Had an optimization done to all function tracing loops to optimize
for a single registered ops. Unfortunately, this allows for a slight
race when tracing starts or ends, where the stub function might be
called after the current registered ops is removed. In this case we
get the following dump:
root# perf stat -e ftrace:function sleep 1
[ 74.339105] WARNING: at include/linux/ftrace.h:209 ftrace_ops_control_func+0xde/0xf0()
[ 74.349522] Hardware name: PRIMERGY RX200 S6
[ 74.357149] Modules linked in: sg igb iTCO_wdt ptp pps_core iTCO_vendor_support i7core_edac dca lpc_ich i2c_i801 coretemp edac_core crc32c_intel mfd_core ghash_clmulni_intel dm_multipath acpi_power_meter pcspk
r microcode vhost_net tun macvtap macvlan nfsd kvm_intel kvm auth_rpcgss nfs_acl lockd sunrpc uinput xfs libcrc32c sd_mod crc_t10dif sr_mod cdrom mgag200 i2c_algo_bit drm_kms_helper ttm qla2xxx mptsas ahci drm li
bahci scsi_transport_sas mptscsih libata scsi_transport_fc i2c_core mptbase scsi_tgt dm_mirror dm_region_hash dm_log dm_mod
[ 74.446233] Pid: 1377, comm: perf Tainted: G W 3.9.0-rc1 #1
[ 74.453458] Call Trace:
[ 74.456233] [<ffffffff81062e3f>] warn_slowpath_common+0x7f/0xc0
[ 74.462997] [<ffffffff810fbc60>] ? rcu_note_context_switch+0xa0/0xa0
[ 74.470272] [<ffffffff811041a2>] ? __unregister_ftrace_function+0xa2/0x1a0
[ 74.478117] [<ffffffff81062e9a>] warn_slowpath_null+0x1a/0x20
[ 74.484681] [<ffffffff81102ede>] ftrace_ops_control_func+0xde/0xf0
[ 74.491760] [<ffffffff8162f400>] ftrace_call+0x5/0x2f
[ 74.497511] [<ffffffff8162f400>] ? ftrace_call+0x5/0x2f
[ 74.503486] [<ffffffff8162f400>] ? ftrace_call+0x5/0x2f
[ 74.509500] [<ffffffff810fbc65>] ? synchronize_sched+0x5/0x50
[ 74.516088] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.522268] [<ffffffff810fbc65>] ? synchronize_sched+0x5/0x50
[ 74.528837] [<ffffffff811041a2>] ? __unregister_ftrace_function+0xa2/0x1a0
[ 74.536696] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.542878] [<ffffffff8162402d>] ? mutex_lock+0x1d/0x50
[ 74.548869] [<ffffffff81105c67>] unregister_ftrace_function+0x27/0x50
[ 74.556243] [<ffffffff8111eadf>] perf_ftrace_event_register+0x9f/0x140
[ 74.563709] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.569887] [<ffffffff8162402d>] ? mutex_lock+0x1d/0x50
[ 74.575898] [<ffffffff8111e94e>] perf_trace_destroy+0x2e/0x50
[ 74.582505] [<ffffffff81127ba9>] tp_perf_event_destroy+0x9/0x10
[ 74.589298] [<ffffffff811295d0>] free_event+0x70/0x1a0
[ 74.595208] [<ffffffff8112a579>] perf_event_release_kernel+0x69/0xa0
[ 74.602460] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.608667] [<ffffffff8112a640>] put_event+0x90/0xc0
[ 74.614373] [<ffffffff8112a740>] perf_release+0x10/0x20
[ 74.620367] [<ffffffff811a3044>] __fput+0xf4/0x280
[ 74.625894] [<ffffffff811a31de>] ____fput+0xe/0x10
[ 74.631387] [<ffffffff81083697>] task_work_run+0xa7/0xe0
[ 74.637452] [<ffffffff81014981>] do_notify_resume+0x71/0xb0
[ 74.643843] [<ffffffff8162fa92>] int_signal+0x12/0x17
To fix this a new ftrace_ops flag is added that denotes the ftrace_list_end
ftrace_ops stub as just that, a stub. This flag is now checked in the
control loop and the function is not called if the flag is set.
Thanks to Jovi for not just reporting the bug, but also pointing out
where the bug was in the code.
Link: http://lkml.kernel.org/r/514A8855.7090402@redhat.com
Link: http://lkml.kernel.org/r/1364377499-1900-15-git-send-email-jovi.zhangwei@huawei.com
Tested-by: WANG Chao <chaowang@redhat.com>
Reported-by: WANG Chao <chaowang@redhat.com>
Reported-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Some drivers want to tell userspace what uid and gid should be used for
their device nodes, so allow that information to percolate through the
driver core to userspace in order to make this happen. This means that
some systems (i.e. Android and friends) will not need to even run a
udev-like daemon for their device node manager and can just rely in
devtmpfs fully, reducing their footprint even more.
Signed-off-by: Kay Sievers <kay@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds DT support to NTC driver to parse the
platform data.
Also adds the support to work as an iio device client.
During the probe ntc driver gets the respective channels of ADC
and uses iio_raw_read calls to get the ADC converted value.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
[Guenter Roeck: fixed Kconfig dependencies; use ERR_CAST]
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Pull KVM fix from Gleb Natapov:
"Bugfix for the regression introduced by commit c300aa64ddf5"
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Allow cross page reads and writes from cached translations.
This patch adds support for kvm_gfn_to_hva_cache_init functions for
reads and writes that will cross a page. If the range falls within
the same memslot, then this will be a fast operation. If the range
is split between two memslots, then the slower kvm_read_guest and
kvm_write_guest are used.
Tested: Test against kvm_clock unit tests.
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
ASPM
Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"
kexec
PCI: Don't try to disable Bus Master on disconnected PCI devices
Platform ROM images
PCI: Add PCI ROM helper for platform-provided ROM images
nouveau: Attempt to use platform-provided ROM image
radeon: Attempt to use platform-provided ROM image
Hotplug
PCI/ACPI: Always resume devices on ACPI wakeup notifications
PCI/PM: Disable runtime PM of PCIe ports
EISA
EISA/PCI: Fix bus res reference
EISA/PCI: Init EISA early, before PNP
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Merge tag 'pci-v3.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"PCI updates for v3.9:
ASPM
Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"
kexec
PCI: Don't try to disable Bus Master on disconnected PCI devices
Platform ROM images
PCI: Add PCI ROM helper for platform-provided ROM images
nouveau: Attempt to use platform-provided ROM image
radeon: Attempt to use platform-provided ROM image
Hotplug
PCI/ACPI: Always resume devices on ACPI wakeup notifications
PCI/PM: Disable runtime PM of PCIe ports
EISA
EISA/PCI: Fix bus res reference
EISA/PCI: Init EISA early, before PNP"
* tag 'pci-v3.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/PM: Disable runtime PM of PCIe ports
PCI/ACPI: Always resume devices on ACPI wakeup notifications
PCI: Don't try to disable Bus Master on disconnected PCI devices
Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus"
radeon: Attempt to use platform-provided ROM image
nouveau: Attempt to use platform-provided ROM image
EISA/PCI: Init EISA early, before PNP
EISA/PCI: Fix bus res reference
PCI: Add PCI ROM helper for platform-provided ROM images
Here is the big Gadget & PHY pull request. Many of us have
been really busy lately getting multiple drivers to a better
position.
Since this pull request is so large, I will divide it in sections
so it's easier to grasp what's included.
- cleanups:
. UDC drivers no longer touch gadget->dev, that's now udc-core
responsibility
. Many more UDC drivers converted to usb_gadget_map/unmap_request()
. UDC drivers no longer initialize DMA-related fields from gadget's
device structure
. UDC drivers don't touch gadget.dev.driver directly
. UDC drivers don't assign gadget.dev.release directly
. Removal of some unused DMA_ADDR_INVALID
. Introduction of CONFIG_USB_PHY
. All phy drivers have been moved to drivers/usb/phy and renamed to
a common naming scheme
. Fix PHY layer so it never returns a NULL pointer, also fix all
callers to avoid using IS_ERR_OR_NULL()
. Sparse fixes all over the place
. drivers/usb/otg/ has been deleted
. Marvel drivers (mv_udc, ehci-mv, mv_otg and mv_u3d) improved clock
usage
- new features:
. UDC core now provides a generic way for tracking and reporting
UDC's state (not attached, resuming, suspended, addressed,
default, etc)
. twl4030-usb learned that it shouldn't be enabled during init
. Full DT support for DWC3 has been implemented
. ab8500-usb learned about pinctrl framework
. nop PHY learned about DeviceTree and regulators
. DWC3 learned about suspend/resume
. DWC3 can now be compiled in host-only and gadget-only (as well as
DRD) configurations
. UVC now enables streaming endpoint based on negotiated speed
. isp1301 now implements the PHY API properly
. configfs-based interface for gadget drivers which will lead to
the removal of all code which just combines functions together
to build functional gadget drivers.
. f_serial and f_obex were converted to new configfs interface while
maintaining old interface around.
- non-critical fixes:
. UVC gadget driver got fixes for Endpoint usage and stream calculation
. ab8500-usb fixed unbalanced clock and regulator API usage
. twl4030-usb got a fix for when OMAP3 is booted with cable connected
. fusb300_udc got a fix for DMA usage
. UVC got fixes for two assertions of the USB Video Class Compliance
specification revision 1.1
. build warning issues caused by recent addition of __must_check to
regulator API
These are all changes which deserve a mention, all other changes are related
to these one or minor spelling fixes and other similar tasks.
Signed-of-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.10 merge window
Here is the big Gadget & PHY pull request. Many of us have
been really busy lately getting multiple drivers to a better
position.
Since this pull request is so large, I will divide it in sections
so it's easier to grasp what's included.
- cleanups:
. UDC drivers no longer touch gadget->dev, that's now udc-core
responsibility
. Many more UDC drivers converted to usb_gadget_map/unmap_request()
. UDC drivers no longer initialize DMA-related fields from gadget's
device structure
. UDC drivers don't touch gadget.dev.driver directly
. UDC drivers don't assign gadget.dev.release directly
. Removal of some unused DMA_ADDR_INVALID
. Introduction of CONFIG_USB_PHY
. All phy drivers have been moved to drivers/usb/phy and renamed to
a common naming scheme
. Fix PHY layer so it never returns a NULL pointer, also fix all
callers to avoid using IS_ERR_OR_NULL()
. Sparse fixes all over the place
. drivers/usb/otg/ has been deleted
. Marvel drivers (mv_udc, ehci-mv, mv_otg and mv_u3d) improved clock
usage
- new features:
. UDC core now provides a generic way for tracking and reporting
UDC's state (not attached, resuming, suspended, addressed,
default, etc)
. twl4030-usb learned that it shouldn't be enabled during init
. Full DT support for DWC3 has been implemented
. ab8500-usb learned about pinctrl framework
. nop PHY learned about DeviceTree and regulators
. DWC3 learned about suspend/resume
. DWC3 can now be compiled in host-only and gadget-only (as well as
DRD) configurations
. UVC now enables streaming endpoint based on negotiated speed
. isp1301 now implements the PHY API properly
. configfs-based interface for gadget drivers which will lead to
the removal of all code which just combines functions together
to build functional gadget drivers.
. f_serial and f_obex were converted to new configfs interface while
maintaining old interface around.
- non-critical fixes:
. UVC gadget driver got fixes for Endpoint usage and stream calculation
. ab8500-usb fixed unbalanced clock and regulator API usage
. twl4030-usb got a fix for when OMAP3 is booted with cable connected
. fusb300_udc got a fix for DMA usage
. UVC got fixes for two assertions of the USB Video Class Compliance
specification revision 1.1
. build warning issues caused by recent addition of __must_check to
regulator API
These are all changes which deserve a mention, all other changes are related
to these one or minor spelling fixes and other similar tasks.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Pull networking fixes from David Miller:
1) Fix erroneous sock_orphan() leading to crashes and double
kfree_skb() in NFC protocol. From Thierry Escande and Samuel Ortiz.
2) Fix use after free in remain-on-channel mac80211 code, from Johannes
Berg.
3) nf_reset() needs to reset the NF tracing cookie, otherwise we can
leak it from one namespace into another. Fix from Gao Feng and
Patrick McHardy.
4) Fix overflow in channel scanning array of mwifiex driver, from Stone
Piao.
5) Fix loss of link after suspend/shutdown in r8169, from Hayes Wang.
6) Synchronization of unicast address lists to the undelying device
doesn't work because whether to sync is maintained as a boolean
rather than a true count. Fix from Vlad Yasevich.
7) Fix corruption of TSO packets in atl1e by limiting the segmented
packet length. From Hannes Frederic Sowa.
8) Revert bogus AF_UNIX credential passing change and fix the
coalescing issue properly, from Eric W Biederman.
9) Changes of ipv4 address lifetime settings needs to generate a
notification, from Jiri Pirko.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
netfilter: don't reset nf_trace in nf_reset()
net: ipv4: notify when address lifetime changes
ixgbe: fix registration order of driver and DCA nofitication
af_unix: If we don't care about credentials coallesce all messages
Revert "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL"
bonding: remove sysfs before removing devices
atl1e: limit gso segment size to prevent generation of wrong ip length fields
net: count hw_addr syncs so that unsync works properly.
r8169: fix auto speed down issue
netfilter: ip6t_NPT: Fix translation for non-multiple of 32 prefix lengths
mwifiex: limit channel number not to overflow memory
NFC: microread: Fix build failure due to a new MEI bus API
iwlwifi: dvm: fix the passive-no-RX workaround
netfilter: nf_conntrack: fix error return code
NFC: llcp: Keep the connected socket parent pointer alive
mac80211: fix idle handling sequence
netfilter: nfnetlink_acct: return -EINVAL if object name is empty
netfilter: nfnetlink_queue: fix error return code in nfnetlink_queue_init()
netfilter: reset nf_trace in nf_reset
mac80211: fix remain-on-channel cancel crash
...
Commit 130549fe ("netfilter: reset nf_trace in nf_reset") added code
to reset nf_trace in nf_reset(). This is wrong and unnecessary.
nf_reset() is used in the following cases:
- when passing packets up the the socket layer, at which point we want to
release all netfilter references that might keep modules pinned while
the packet is queued. nf_trace doesn't matter anymore at this point.
- when encapsulating or decapsulating IPsec packets. We want to continue
tracing these packets after IPsec processing.
- when passing packets through virtual network devices. Only devices on
that encapsulate in IPv4/v6 matter since otherwise nf_trace is not
used anymore. Its not entirely clear whether those packets should
be traced after that, however we've always done that.
- when passing packets through virtual network devices that make the
packet cross network namespace boundaries. This is the only cases
where we clearly want to reset nf_trace and is also what the
original patch intended to fix.
Add a new function nf_reset_trace() and use it in dev_forward_skb() to
fix this properly.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This contains slightly more volumes than usual at this stage, mostly
because of my vacation in the last week.
Nothing to scare, all small and/or trivial fixes:
- Fix loop path handling in ASoC DAPM
- Some memory handling fixes in ASoC core
- Fix spear_pcm to adapt to the updated API
- HD-audio HDMI ELD handling fixes
- Fix for CM6331 USB-audio SRC change bugs
- Revert power_save_controller option change due to user-space usage
- A few other small ASoC and HD-audio fixes
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Merge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This contains slightly more volumes than usual at this stage, mostly
because of my vacation in the last week. Nothing to scare, all small
and/or trivial fixes:
- Fix loop path handling in ASoC DAPM
- Some memory handling fixes in ASoC core
- Fix spear_pcm to adapt to the updated API
- HD-audio HDMI ELD handling fixes
- Fix for CM6331 USB-audio SRC change bugs
- Revert power_save_controller option change due to user-space usage
- A few other small ASoC and HD-audio fixes"
* tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/generic - fix uninitialized variable
Revert "ALSA: hda - Allow power_save_controller option override DCAPS"
ALSA: hda - fix typo in proc output
ALSA: hda - Enabling Realtek ALC 671 codec
ALSA: usb: Work around CM6631 sample rate change bug
ALSA: hda - bug fix on HDMI ELD debug message
ALSA: hda - bug fix on return value when getting HDMI ELD info
ASoC: dma-sh7760: Fix compile error
ASoC: core: fix invalid free of devm_ allocated data
ASoC: spear_pcm: Update to new pcm_new() API
ASoC:: max98090: Remove executable bit
ASoC: dapm: Fix pointer dereference in is_connected_output_ep()
ASoC: pcm030 audio fabric: remove __init from probe
ASoC: imx-ssi: Fix occasional AC97 reset failure
ASoC: core: fix possible memory leak in snd_soc_bytes_put()
ASoC: wm_adsp: fix possible memory leak in wm_adsp_load_coeff()
ASoC: dapm: Fix handling of loops
ASoC: si476x: Add missing break for SNDRV_PCM_FORMAT_S8 switch case
A few drivers use dev_uc_sync/unsync to synchronize the
address lists from master down to slave/lower devices. In
some cases (bond/team) a single address list is synched down
to multiple devices. At the time of unsync, we have a leak
in these lower devices, because "synced" is treated as a
boolean and the address will not be unsynced for anything after
the first device/call.
Treat "synced" as a count (same as refcount) and allow all
unsync calls to work.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Revert of a recent cpuidle change that caused Nehalem machines
to hang on boot from Alex Shi.
- USB power management fix addressing a crash in the port device
object's release routine from Rafael J. Wysocki.
- Device PM QoS fix for a potential deadlock related to sysfs
interface from Rafael J. Wysocki.
- Fix for a cpufreq crash when the /cpus Device Tree node is missing
from Paolo Pisati.
- Fix for a build issue on ia64 related to the Boot Graphics Resource
Table (BGRT) from Tony Luck.
- Two fixes for ACPI handles being set incorrectly for device
objects that don't correspond to any ACPI namespace nodes in
the I2C and SPI subsystems from Rafael J. Wysocki.
- Fix for compiler warnings related to CONFIG_PM_DEVFREQ being
unset from Rajagopal Venkat.
- Fix for a symbol definition typo in cpufreq_governor.h from
Borislav Petkov.
/
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Merge tag 'pm+acpi-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- Revert of a recent cpuidle change that caused Nehalem machines to
hang on boot from Alex Shi.
- USB power management fix addressing a crash in the port device
object's release routine from Rafael J Wysocki.
- Device PM QoS fix for a potential deadlock related to sysfs interface
from Rafael J Wysocki.
- Fix for a cpufreq crash when the /cpus Device Tree node is missing
from Paolo Pisati.
- Fix for a build issue on ia64 related to the Boot Graphics Resource
Table (BGRT) from Tony Luck.
- Two fixes for ACPI handles being set incorrectly for device objects
that don't correspond to any ACPI namespace nodes in the I2C and SPI
subsystems from Rafael J Wysocki.
- Fix for compiler warnings related to CONFIG_PM_DEVFREQ being unset
from Rajagopal Venkat.
- Fix for a symbol definition typo in cpufreq_governor.h from Borislav
Petkov.
* tag 'pm+acpi-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / BGRT: Don't let users configure BGRT on non X86 systems
cpuidle / ACPI: recover percpu ACPI processor cstate
ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()
cpufreq: Correct header guards typo
ACPI / SPI: Use parent's ACPI_HANDLE() in acpi_register_spi_devices()
cpufreq: check OF node /cpus presence before dereferencing it
PM / devfreq: Fix compiler warnings for CONFIG_PM_DEVFREQ unset
PM / QoS: Avoid possible deadlock related to sysfs access
USB / PM: Don't try to hide PM QoS flags from usb_port_device_release()
Pablo Neira Ayuso says:
====================
The following patchset contains netfilter updates for your net tree,
they are:
* Fix missing the skb->trace reset in nf_reset, noticed by Gao Feng
while using the TRACE target with several net namespaces.
* Fix prefix translation in IPv6 NPT if non-multiple of 32 prefixes
are used, from Matthias Schiffer.
* Fix invalid nfacct objects with empty name, they are now rejected
with -EINVAL, spotted by Michael Zintakis, patch from myself.
* A couple of fixes for wrong return values in the error path of
nfnetlink_queue and nf_conntrack, from Wei Yongjun.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The controller also contains support for displays in a portrait
orientation and it seems devices which such displays really reached
the market - Pandigital Novell seems to be one example.
Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Change the driver to use the framebuffer rotation functions to be
able to change the rotation at runtime.
This also removes the setting of the rotation via the platform data.
Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
With the conversion to devicetree only for arch-vt8500, this
header is no longer required. This patch removes the #include
from the two framebuffer drivers that used it, and the header file.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Reviewed-by: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The function returns type of ATAPI drives so it should return integer value.
The commit 4dce8ba94c (libata: Use 'bool' return value for ata_id_XXX) since
v2.6.39 changed the type of return value from int to bool, the change would
cause all of the ATAPI class drives to be treated as TYPE_TAPE and the
max_sectors of the drives to be set to 65535 because of the commit
f8d8e5799b7(libata: increase 128 KB / cmd limit for ATAPI tape drives), for the
function would return true for all ATAPI class drives and the TYPE_TAPE is
defined as 0x01.
Cc: stable@vger.kernel.org
Signed-off-by: Shan Hai <shan.hai@windriver.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
There's a bunch of different things in this series, I can split them out
if need be:
- Support for configuring the button detection circuit to reflect the
accessories supplied with the system.
- Improvements in the HPDET based detection scheme.
- Additional robustness against more pathological use cases.
- A few small standalone fixes.
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Merge tag 'extcon-arizona-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc into char-misc-next
Mark writes:
extcon: arizona: Updates for v3.10
There's a bunch of different things in this series, I can split them out
if need be:
- Support for configuring the button detection circuit to reflect the
accessories supplied with the system.
- Improvements in the HPDET based detection scheme.
- Additional robustness against more pathological use cases.
- A few small standalone fixes.
|# modprobe dummy_hcd num=2
|# modprobe libcomposite
|# lsmod
|Module Size Used by
|libcomposite 31648 0
|dummy_hcd 19871 0
|# mkdir /sys/kernel/config/usb_gadget/oha
|# cd /sys/kernel/config/usb_gadget/oha
|# mkdir configs/def.1
|# mkdir configs/def.2
|# mkdir functions/acm.ttyS1
|# mkdir strings/0x1
|mkdir: cannot create directory `strings/0x1': Invalid argument
|# mkdir strings/0x409
|# mkdir strings/1033
|mkdir: cannot create directory `strings/1033': File exists
|# mkdir strings/1032
|# mkdir configs/def.1/strings/0x409
|# mkdir configs/def.2/strings/0x409
|#find . -ls
| 975 0 drwxr-xr-x 5 root root 0 Dec 23 17:40 .
| 978 0 drwxr-xr-x 4 root root 0 Dec 23 17:43 ./strings
| 4100 0 drwxr-xr-x 2 root root 0 Dec 23 17:43 ./strings/1032
| 995 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/1032/serialnumber
| 996 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/1032/product
| 997 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/1032/manufacturer
| 2002 0 drwxr-xr-x 2 root root 0 Dec 23 17:41 ./strings/0x409
| 998 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/0x409/serialnumber
| 999 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/0x409/product
| 1000 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./strings/0x409/manufacturer
| 977 0 drwxr-xr-x 4 root root 0 Dec 23 17:41 ./configs
| 4081 0 drwxr-xr-x 3 root root 0 Dec 23 17:41 ./configs/def.2
| 4082 0 drwxr-xr-x 3 root root 0 Dec 23 17:42 ./configs/def.2/strings
| 2016 0 drwxr-xr-x 2 root root 0 Dec 23 17:42 ./configs/def.2/strings/0x409
| 1001 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.2/strings/0x409/configuration
| 1002 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.2/bmAttributes
| 1003 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.2/MaxPower
| 979 0 drwxr-xr-x 3 root root 0 Dec 23 17:42 ./configs/def.1
| 980 0 drwxr-xr-x 3 root root 0 Dec 23 17:42 ./configs/def.1/strings
| 5122 0 drwxr-xr-x 2 root root 0 Dec 23 17:42 ./configs/def.1/strings/0x409
| 1004 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.1/strings/0x409/configuration
| 1005 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.1/bmAttributes
| 1006 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./configs/def.1/MaxPower
| 976 0 drwxr-xr-x 3 root root 0 Dec 23 17:41 ./functions
| 981 0 drwxr-xr-x 2 root root 0 Dec 23 17:41 ./functions/acm.ttyS1
| 1007 0 -r--r--r-- 1 root root 4096 Dec 23 17:43 ./functions/acm.ttyS1/port_num
| 1008 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./UDC
| 1009 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bcdUSB
| 1010 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bcdDevice
| 1011 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./idProduct
| 1012 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./idVendor
| 1013 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bMaxPacketSize0
| 1014 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bDeviceProtocol
| 1015 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bDeviceSubClass
| 1016 0 -rw-r--r-- 1 root root 4096 Dec 23 17:43 ./bDeviceClass
|# cat functions/acm.ttyS1/port_num
|0
|# ls -lah /dev/ttyGS*
|crw-rw---T 1 root dialout 252, 0 Dec 23 17:41 /dev/ttyGS0
|
|# echo 0x1234 > idProduct
|# echo 0xabcd > idVendor
|# echo 1122 > strings/0x409/serialnumber
|# echo "The manufacturer" > strings/0x409/manufacturer
|# echo 1 > strings/1032/manufacturer
|# echo 1sa > strings/1032/product
|# echo tada > strings/1032/serialnumber
|echo "Primary configuration" > configs/def.1/strings/0x409/configuration
|# echo "Secondary configuration" > configs/def.2/strings/0x409/configuration
|# ln -s functions/acm.ttyS1 configs/def.1/
|# ln -s functions/acm.ttyS1 configs/def.2/
|find configs/def.1/ -ls
| 979 0 drwxr-xr-x 3 root root 0 Dec 23 17:49 configs/def.1/
| 6264 0 lrwxrwxrwx 1 root root 0 Dec 23 17:48 configs/def.1/acm.ttyS1 -> ../../../../usb_gadget/oha/functions/acm.ttyS1
| 980 0 drwxr-xr-x 3 root root 0 Dec 23 17:42 configs/def.1/strings
| 5122 0 drwxr-xr-x 2 root root 0 Dec 23 17:49 configs/def.1/strings/0x409
| 6284 0 -rw-r--r-- 1 root root 4096 Dec 23 17:47 configs/def.1/strings/0x409/configuration
| 6285 0 -rw-r--r-- 1 root root 4096 Dec 23 17:49 configs/def.1/bmAttributes
| 6286 0 -rw-r--r-- 1 root root 4096 Dec 23 17:49 configs/def.1/MaxPower
|
|echo 120 > configs/def.1/MaxPower
|
|# ls -lh /sys/class/udc/
|total 0
|lrwxrwxrwx 1 root root 0 Dec 23 17:50 dummy_udc.0 -> ../../devices/platform/dummy_udc.0/udc/dummy_udc.0
|lrwxrwxrwx 1 root root 0 Dec 23 17:50 dummy_udc.1 -> ../../devices/platform/dummy_udc.1/udc/dummy_udc.1
|# echo dummy_udc.0 > UDC
|# lsusb
|Bus 001 Device 002: ID abcd:1234 Unknown
|
|lsusb -d abcd:1234 -v
|Device Descriptor:
…
| idVendor 0xabcd Unknown
| idProduct 0x1234
| bcdDevice 3.06
| iManufacturer 1 The manufacturer
| iProduct 2
| iSerial 3 1122
| bNumConfigurations 2
…
|echo "" > UDC
v5…v6
- wired up strings with usb_gstrings_attach()
- add UDC attribe. Write "udc-name" will bind the gadget. Write an empty
string (it should contain \n since 0 bytes write get optimzed away)
will unbind the UDC from the gadget. The name of available UDCs can be
obtained from /sys/class/udc/
v4…v5
- string rework. This will add a strings folder incl. language code like
strings/409/manufacturer
as suggested by Alan.
- rebased ontop reworked functions.c which has usb_function_instance
which is used prior after "mkdir acm.instance" and can be directly
used for configuration via configfs.
v3…v4
- moved functions from the root folde down to the gadget as suggested
by Michał
- configs have now their own configs folder as suggested by Michał.
The folder is still name.bConfigurationValue where name becomes the
sConfiguration. Is this usefull should we just stilc
configs/bConfigurationValue/ ?
- added configfs support to the ACM function. The port_num attribute is
exported by f_acm. An argument has been added to the USB alloc
function to distinguish between "old" (use facm_configure() to
configure and configfs interface (expose a config_node).
The port_num is currently a dumb counter. It will
require some function re-work to make it work.
scheduled for v5:
- sym linking function into config.
v2…v3
- replaced one ifndef by ifdef as suggested by Micahał
- strstr()/strchr() function_make as suggested by Micahł
- replace [iSerialNumber|iProduct|iManufacturer] with
[sSerialNumber|sProduct|sManufacturer] as suggested by Alan
- added creation of config descriptors
v1…v2
- moved gadgets from configfs' root directory into /udcs/ within our
"usb_gadget" folder. Requested by Andrzej & Michał
- use a dot as a delimiter between function's name and its instance's name
as suggested by Michał
- renamed all config_item_type, configfs_group_operations, make_group,
drop_item as suggested by suggested by Andrzej to remain consisten
within this file and within other configfs users
- Since configfs.c and functions.c are now part of the udc-core module,
the module itself is now called udc. Also added a tiny ifdef around
init code becuase udc-core is subsys init and this is too early for
configfs in the built-in case. In the module case, we can only have
one init function.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Pull MIPS fixes from Ralf Baechle:
"A collection of fixes pretty much across the MIPS code. Even the
change to include/linux/signal.h by David Howells' 2a1486981c ("Fix
breakage in MIPS siginfo handling") should be considered MIPS-specific
as it touches an ifdefed segment that is only relevant to MIPS and
which unfortunately can't be made to go away entirely."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
Fix breakage in MIPS siginfo handling
Revert "MIPS: BCM63XX: Call board_register_device from device_initcall()"
MIPS: BCM63XX: Make nvram checksum failure non fatal
MIPS: Fix code generation for non-DSP capable CPUs
MIPS: Fix inconsistent formatting inside /proc/cpuinfo
MIPS: SEAD3: Enable LL/SC.
MIPS: Get rid of CONFIG_CPU_HAS_LLSC again
MIPS: Add dependencies for HAVE_ARCH_TRANSPARENT_HUGEPAGE
MIPS: VR4133: Fix probe for LL/SC.
MIPS: Fix logic errors in bitops.c
MIPS: Use CONFIG_CPU_MIPSR2 in csum_partial.S
MIPS: compat: Return same error ENOSYS as native for invalid operation.
Help mitigate against mechanical bounce during the initial detection by
allowing the configuration of an additional debounce on top of that the
hardware does during the initial phase of microphone detection operation.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Rather than measuring both HP channels we can simply directly measure the
microphone impedance and then rely on MICDET for final confirmation of the
presence of a suitable microphone. This improves the overall performance
of the identification process.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The Arizona button detection circuit is configurable, allowing the system
integrator to program a range of thresholds for the buttons supported on
the accessory but currently the driver uses the default button ranges and
does not provide any flexibility in how this is exposed to the application
layer.
Provide platform data allowing the user to control this and to map
the buttons to keys in the input subsystem.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This patch fixup below sparse errors
CHECK ${RENESAS_USB}/common.c
${RENESAS_USB}/common.c:313:17: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:322:17: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:384:17: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:524:9: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:545:9: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:574:9: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/common.c:606:9: error: incompatible types in conditional expression (different base types)
${RENESAS_USB}/mod_gadget.c:233:28: warning: symbol 'req_clear_feature' was not declared. Should it be static?
${RENESAS_USB}/mod_gadget.c:274:28: warning: symbol 'req_set_feature' was not declared. Should it be static?
${RENESAS_USB}/mod_gadget.c:375:28: warning: symbol 'req_get_status' was not declared. Should it be static?
[ balbi@ti.com : added three sparse fixes to mod_gadget.c ]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Using pdata to pass clock name is not correct.
Directly get clock from usb drivers.
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fix compiler warnings generated when devfreq is not enabled
(CONFIG_PM_DEVFREQ is not set).
Signed-off-by: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull networking fixes from David Miller:
1) sadb_msg prepared for IPSEC userspace forgets to initialize the
satype field, fix from Nicolas Dichtel.
2) Fix mac80211 synchronization during station removal, from Johannes
Berg.
3) Fix IPSEC sequence number notifications when they wrap, from Steffen
Klassert.
4) Fix cfg80211 wdev tracing crashes when add_virtual_intf() returns an
error pointer, from Johannes Berg.
5) In mac80211, don't call into the channel context code with the
interface list mutex held. From Johannes Berg.
6) In mac80211, if we don't actually associate, do not restart the STA
timer, otherwise we can crash. From Ben Greear.
7) Missing dma_mapping_error() check in e1000, ixgb, and e1000e. From
Christoph Paasch.
8) Fix sja1000 driver defines to not conflict with SH port, from Marc
Kleine-Budde.
9) Don't call il4965_rs_use_green with a NULL station, from Colin Ian
King.
10) Suspend/Resume in the FEC driver fail because the buffer descriptors
are not initialized at all the moments in which they should. Fix
from Frank Li.
11) cpsw and davinci_emac drivers both use the wrong interface to
restart a stopped TX queue. Use netif_wake_queue not
netif_start_queue, the latter is for initialization/bringup not
active management of the queue. From Mugunthan V N.
12) Fix regression in rate calculations done by
psched_ratecfg_precompute(), missing u64 type promotion. From
Sergey Popovich.
13) Fix length overflow in tg3 VPD parsing, from Kees Cook.
14) AOE driver fails to allocate enough headroom, resulting in crashes.
Fix from Eric Dumazet.
15) RX overflow happens too quickly in sky2 driver because pause packet
thresholds are not programmed correctly. From Mirko Lindner.
16) Bonding driver manages arp_interval and miimon settings incorrectly,
disabling one unintentionally disables both. Fix from Nikolay
Aleksandrov.
17) smsc75xx drivers don't program the RX mac properly for jumbo frames.
Fix from Steve Glendinning.
18) Fix off-by-one in Codel packet scheduler. From Vijay Subramanian.
19) Fix packet corruption in atl1c by disabling MSI support, from Hannes
Frederic Sowa.
20) netdev_rx_handler_unregister() needs a synchronize_net() to fix
crashes in bonding driver unload stress tests. From Eric Dumazet.
21) rxlen field of ks8851 RX packet descriptors not interpreted
correctly (it is 12 bits not 16 bits, so needs to be masked after
shifting the 32-bit value down 16 bits). Fix from Max Nekludov.
22) Fix missed RX/TX enable in sh_eth driver due to mishandling of link
change indications. From Sergei Shtylyov.
23) Fix crashes during spurious ECI interrupts in sh_eth driver, also
from Sergei Shtylyov.
24) dm9000 driver initialization is done wrong for revision B devices
with DSP PHY, from Joseph CHANG.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (53 commits)
DM9000B: driver initialization upgrade
sh_eth: make 'link' field of 'struct sh_eth_private' *int*
sh_eth: workaround for spurious ECI interrupt
sh_eth: fix handling of no LINK signal
ks8851: Fix interpretation of rxlen field.
net: add a synchronize_net() in netdev_rx_handler_unregister()
MAINTAINERS: Update netxen_nic maintainers list
atl1e: drop pci-msi support because of packet corruption
net: fq_codel: Fix off-by-one error
net: calxedaxgmac: Wake-on-LAN fixes
net: calxedaxgmac: fix rx ring handling when OOM
net: core: Remove redundant call to 'nf_reset' in 'dev_forward_skb'
smsc75xx: fix jumbo frame support
net: fix the use of this_cpu_ptr
bonding: fix disabling of arp_interval and miimon
ipv6: don't accept node local multicast traffic from the wire
sky2: Threshold for Pause Packet is set wrong
sky2: Receive Overflows not counted
aoe: reserve enough headroom on skbs
line up comment for ndo_bridge_getlink
...
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Merge tag 'for-linus-20130331' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Alright, this time from 10K up in the air.
Collection of fixes that have been queued up since the merge window
opened, hence postponed until later in the cycle. The pull request
contains:
- A bunch of fixes for the xen blk front/back driver.
- A round of fixes for the new IBM RamSan driver, fixing various
nasty issues.
- Fixes for multiple drives from Wei Yongjun, bad handling of return
values and wrong pointer math.
- A fix for loop properly killing partitions when being detached."
* tag 'for-linus-20130331' of git://git.kernel.dk/linux-block: (25 commits)
mg_disk: fix error return code in mg_probe()
rsxx: remove unused variable
rsxx: enable error return of rsxx_eeh_save_issued_dmas()
block: removes dynamic allocation on stack
Block: blk-flush: Fixed indent code style
cciss: fix invalid use of sizeof in cciss_find_cfgtables()
loop: cleanup partitions when detaching loop device
loop: fix error return code in loop_add()
mtip32xx: fix error return code in mtip_pci_probe()
xen-blkfront: remove frame list from blk_shadow
xen-blkfront: pre-allocate pages for requests
xen-blkback: don't store dev_bus_addr
xen-blkfront: switch from llist to list
xen-blkback: fix foreach_grant_safe to handle empty lists
xen-blkfront: replace kmalloc and then memcpy with kmemdup
xen-blkback: fix dispatch_rw_block_io() error path
rsxx: fix missing unlock on error return in rsxx_eeh_remap_dmas()
Adding in EEH support to the IBM FlashSystem 70/80 device driver
block: IBM RamSan 70/80 error message bug fix.
block: IBM RamSan 70/80 branding changes.
...
This reverts commit 6aa9707099.
Commit 6aa9707099 ("lockdep: check that no locks held at freeze time")
causes problems with NFS root filesystems. The failures were noticed on
OMAP2 and 3 boards during kernel init:
[ BUG: swapper/0/1 still has locks held! ]
3.9.0-rc3-00344-ga937536 #1 Not tainted
-------------------------------------
1 lock held by swapper/0/1:
#0: (&type->s_umount_key#13/1){+.+.+.}, at: [<c011e84c>] sget+0x248/0x574
stack backtrace:
rpc_wait_bit_killable
__wait_on_bit
out_of_line_wait_on_bit
__rpc_execute
rpc_run_task
rpc_call_sync
nfs_proc_get_root
nfs_get_root
nfs_fs_mount_common
nfs_try_mount
nfs_fs_mount
mount_fs
vfs_kern_mount
do_mount
sys_mount
do_mount_root
mount_root
prepare_namespace
kernel_init_freeable
kernel_init
Although the rootfs mounts, the system is unstable. Here's a transcript
from a PM test:
http://www.pwsan.com/omap/testlogs/test_v3.9-rc3/20130317194234/pm/37xxevm/37xxevm_log.txt
Here's what the test log should look like:
http://www.pwsan.com/omap/testlogs/test_v3.8/20130218214403/pm/37xxevm/37xxevm_log.txt
Mailing list discussion is here:
http://lkml.org/lkml/2013/3/4/221
Deal with this for v3.9 by reverting the problem commit, until folks can
figure out the right long-term course of action.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mandeep Singh Baines <msb@chromium.org>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: <maciej.rutecki@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ben Chan <benchan@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In DMA support, The received data is not pushed to tty until the DMA buffer
is filled. But some megabyte rate chips such as BT expect fast response and
data should be pushed immediately. In order to fix this issue, We suggest
the use of the timer for polling DMA buffer.
In our test, no data loss occurred at high-baudrate as compared with interrupt-
driven (We tested with 3Mbps).
We changes:
- We add timer for polling. If we set poll_timer to 10, every 10ms,
timer handler checks the residue in the dma buffer and transfer data
to the tty. Also, last_residue is updated for the next polling.
- poll_timeout is used to prevent the timer's system cost.
If poll_timeout is set to 3000 and no data is received in 3 seconds,
we inactivate poll timer and driver falls back to interrupt-driven.
When data is received again in FIFO and UART irq is occurred, we switch
back to DMA mode and start polling.
- We use consistent DMA mappings to avoid from the frequent cache operation
of the timer function for default.
- pl011_dma_rx_chars is modified. the pending size is recalculated because
data can be taken by polling.
- the polling time is adjusted if dma rx poll is enabled but no rate is
specified. Ideal polling interval to push 1 character at every interval
is the reciprocal of 'baud rate / 10 line bits per character / 1000 ms
per sec'. But It is very aggressive to system. Experimentally,
'10000000 / baud' is suitable to receive dozens of characters. the poll rate
can be specified statically by dma_rx_poll_rate of the platform data as well.
Changes compared to v1:
- Use of consistent DMA mappings.
- Added dma_rx_poll_rate in platform data to specify the polling interval.
- Added dma_rx_poll_timeout in platform data to specify the polling timeout.
Changes compared to v2:
- Use of consistent DMA mappings for default.
- Added dma_rx_poll_enable in platform data to adjust the polling time
according to the baud rate.
- remove unnecessary lock from the polling function.
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
MEI drivers should be able to carry their private data around.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mei client bus will present some of the mei clients
as devices for other standard subsystems
Implement the probe, remove, match, device addtion routines, along with
the sysfs and uevent ones. mei_cl_device_id is also added to
mod_devicetable.h
A mei-cleint-bus.txt document describing the rationale and the API usage
is also added while ABI/testing/sysfs-bus-mei describeis the modalias ABI.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 1869305009 ("mm: introduce VM_POPULATE flag to
better deal with racy userspace programs").
VM_POPULATE only has any effect when userspace plays racy games with
vmas by trying to unmap and remap memory regions that mmap or mlock are
operating on.
Also, the only effect of VM_POPULATE when userspace plays such games is
that it avoids populating new memory regions that get remapped into the
address range that was being operated on by the original mmap or mlock
calls.
Let's remove VM_POPULATE as there isn't any strong argument to mandate a
new vm_flag.
Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some USB fixes to resolve issues reported recently, as well as a new
device id for the ftdi_sio driver.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg Kroah-Hartman:
"Here are some USB fixes to resolve issues reported recently, as well
as a new device id for the ftdi_sio driver."
* tag 'usb-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: ftdi_sio: Add support for Mitsubishi FX-USB-AW/-BD
usb: Fix compile error by selecting USB_OTG_UTILS
USB: serial: fix hang when opening port
USB: EHCI: fix bug in iTD/siTD DMA pool allocation
xhci: Don't warn on empty ring for suspended devices.
usb: xhci: Fix TRB transfer length macro used for Event TRB.
usb/acpi: binding xhci root hub usb port with ACPI
usb: add find_raw_port_number callback to struct hc_driver()
usb: xhci: fix build warning
Here are some small char/misc driver fixes that resolve issues recently
reported against the 3.9-rc kernels. All have been in linux-next for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg Kroah-Hartman:
"Here are some small char/misc driver fixes that resolve issues
recently reported against the 3.9-rc kernels. All have been in
linux-next for a while."
* tag 'char-misc-3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
VMCI: Fix process-to-process DRGAMs.
mei: ME hardware reset needs to be synchronized
mei: add mei_stop function to stop mei device
extcon: max77693: Initialize register of MUIC device to bring up it without platform data
extcon: max77693: Fix bug of wrong pointer when platform data is not used
extcon: max8997: Check the pointer of platform data to protect null pointer error
Pull userns fixes from Eric W Biederman:
"The bulk of the changes are fixing the worst consequences of the user
namespace design oversight in not considering what happens when one
namespace starts off as a clone of another namespace, as happens with
the mount namespace.
The rest of the changes are just plain bug fixes.
Many thanks to Andy Lutomirski for pointing out many of these issues."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
userns: Restrict when proc and sysfs can be mounted
ipc: Restrict mounting the mqueue filesystem
vfs: Carefully propogate mounts across user namespaces
vfs: Add a mount flag to lock read only bind mounts
userns: Don't allow creation if the user is chrooted
yama: Better permission check for ptraceme
pid: Handle the exit of a multi-threaded init.
scm: Require CAP_SYS_ADMIN over the current pidns to spoof pids.
This patch (as1675) removes the CONFIG_USB_SUSPEND option, essentially
replacing it everywhere with CONFIG_PM_RUNTIME (except for one place
in hub.c, where it is replaced with CONFIG_PM because the code needs
to be used in both runtime and system PM). The net result is code
shrinkage and simplification.
There's very little point in keeping CONFIG_USB_SUSPEND because almost
everybody enables it. The few that don't will find that the usbcore
module has gotten somewhat bigger and they will have to take active
measures if they want to prevent hubs from being runtime suspended.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Regression fixes for C-and-P states not being parsed properly.
- Fix possible security issue with guests triggering DoS via non-assigned MSI-Xs.
- Fix regression (introduced in v3.7) with raising an event (v2).
- Fix hastily introduced band-aid during c0 for the CR3 blowup.
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Merge tag 'stable/for-linus-3.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
"This is mostly just the last stragglers of the regression bugs that
this merge window had. There are also two bug-fixes: one that adds an
extra layer of security, and a regression fix for a change that was
added in v3.7 (the v1 was faulty, the v2 works).
- Regression fixes for C-and-P states not being parsed properly.
- Fix possible security issue with guests triggering DoS via
non-assigned MSI-Xs.
- Fix regression (introduced in v3.7) with raising an event (v2).
- Fix hastily introduced band-aid during c0 for the CR3 blowup."
* tag 'stable/for-linus-3.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/events: avoid race with raising an event in unmask_evtchn()
xen/mmu: Move the setting of pvops.write_cr3 to later phase in bootup.
xen/acpi-stub: Disable it b/c the acpi_processor_add is no longer called.
xen-pciback: notify hypervisor about devices intended to be assigned to guests
xen/acpi-processor: Don't dereference struct acpi_processor on all CPUs.
Only allow unprivileged mounts of proc and sysfs if they are already
mounted when the user namespace is created.
proc and sysfs are interesting because they have content that is
per namespace, and so fresh mounts are needed when new namespaces
are created while at the same time proc and sysfs have content that
is shared between every instance.
Respect the policy of who may see the shared content of proc and sysfs
by only allowing new mounts if there was an existing mount at the time
the user namespace was created.
In practice there are only two interesting cases: proc and sysfs are
mounted at their usual places, proc and sysfs are not mounted at all
(some form of mount namespace jail).
Cc: stable@vger.kernel.org
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
When a read-only bind mount is copied from mount namespace in a higher
privileged user namespace to a mount namespace in a lesser privileged
user namespace, it should not be possible to remove the the read-only
restriction.
Add a MNT_LOCK_READONLY mount flag to indicate that a mount must
remain read-only.
CC: stable@vger.kernel.org
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Guarantee that the policy of which files may be access that is
established by setting the root directory will not be violated
by user namespaces by verifying that the root directory points
to the root of the mount namespace at the time of user namespace
creation.
Changing the root is a privileged operation, and as a matter of policy
it serves to limit unprivileged processes to files below the current
root directory.
For reasons of simplicity and comprehensibility the privilege to
change the root directory is gated solely on the CAP_SYS_CHROOT
capability in the user namespace. Therefore when creating a user
namespace we must ensure that the policy of which files may be access
can not be violated by changing the root directory.
Anyone who runs a processes in a chroot and would like to use user
namespace can setup the same view of filesystems with a mount
namespace instead. With this result that this is not a practical
limitation for using user namespaces.
Cc: stable@vger.kernel.org
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
It turns out that some UEFI systems provide apparently an apparently valid
PCI ROM BAR that turns out to contain garbage, so the attempt in 547b52463
to prefer the ROM from the BAR actually breaks a different set of machines.
As Linus pointed out, the graphics drivers are probably in the best
position to make this judgement, so this basically reverts 547b52463 and
f9a37be0f and adds a new helper function. Followup patches will add support
to nouveau and radeon for probing this ROM source if they can't find a ROM
from some other source.
[bhelgaas: added reporter and bugzilla pointers, s/f4eb5ff05/547b52463]
Reference: https://bugzilla.redhat.com/show_bug.cgi?id=927451
Reference: http://lkml.kernel.org/r/kg69ef$vdb$1@ger.gmane.org
Reported-by: Mantas Mikulėnas <grawity@gmail.com>
Reported-by: Chris Murphy <bugzilla@colorremedies.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Pull networking fixes from David Miller:
1) Always increment IPV4 ID field in encapsulated GSO packets, even
when DF is set. Regression fix from Pravin B Shelar.
2) Fix per-net subsystem initialization in netfilter conntrack,
otherwise we may access dynamically allocated memory before it is
actually allocated. From Gao Feng.
3) Fix DMA buffer lengths in iwl3945 driver, from Stanislaw Gruszka.
4) Fix race between submission of sync vs async commands in mwifiex
driver, from Amitkumar Karwar.
5) Add missing cancel of command timer in mwifiex driver, from Bing
Zhao.
6) Missing SKB free in rtlwifi USB driver, from Jussi Kivilinna.
7) Thermal layer tries to use a genetlink multicast string that is
longer than the 16 character limit. Fix it and add a BUG check to
prevent this kind of thing from happening in the future.
From Masatake YAMATO.
8) Fix many bugs in the handling of the teardown of L2TP connections,
UDP encapsulation instances, and sockets. From Tom Parkin.
9) Missing socket release in IRDA, from Kees Cook.
10) Fix fec driver modular build, from Fabio Estevam.
11) Erroneous use of kfree() instead of free_netdev() in lantiq_etop,
from Wei Yongjun.
12) Fix bugs in handling of queue numbers and steering rules in mlx4
driver, from Moshe Lazer, Hadar Hen Zion, and Or Gerlitz.
13) Some FOO_DIAG_MAX constants were defined off by one, fix from Andrey
Vagin.
14) TCP segmentation deferral is unintentionally done too strongly,
breaking ACK clocking. Fix from Eric Dumazet.
15) net_enable_timestamp() can legitimately be invoked from software
interrupts, and in a way that is safe, so remove the WARN_ON().
Also from Eric Dumazet.
16) Fix use after free in VLANs, from Cong Wang.
17) Fix TCP slow start retransmit storms after SACK reneging, from
Yuchung Cheng.
18) Unix socket release should mark a socket dead before NULL'ing out
sock->sk, otherwise we can race. Fix from Paul Moore.
19) IPV6 addrconf code can try to free static memory, from Hong Zhiguo.
20) Fix register mis-programming, NULL pointer derefs, and wrong PHC
clock frequency in IGB driver. From Lior LevyAlex Williamson, Jiri
Benc, and Jeff Kirsher.
21) skb->ip_summed logic in pch_gbe driver is reversed, breaking packet
forwarding. Fix from Veaceslav Falico.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits)
ipv4: Fix ip-header identification for gso packets.
bonding: remove already created master sysfs link on failure
af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
pch_gbe: fix ip_summed checksum reporting on rx
igb: fix PHC stopping on max freq
igb: make sensor info static
igb: SR-IOV init reordering
igb: Fix null pointer dereference
igb: fix i350 anti spoofing config
ixgbevf: don't release the soft entries
ipv6: fix bad free of addrconf_init_net
unix: fix a race condition in unix_release()
tcp: undo spurious timeout after SACK reneging
bnx2x: fix assignment of signed expression to unsigned variable
bridge: fix crash when set mac address of br interface
8021q: fix a potential use-after-free
net: remove a WARN_ON() in net_enable_timestamp()
tcp: preserve ACK clocking in TSO
net: fix *_DIAG_MAX constants
net/mlx4_core: Disallow releasing VF QPs which have steering rules
...
PCI defines PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() interfaces; however,
it doesn't have interfaces to return PCI bus and PCI device id. Drivers
(AMD IOMMU, and AER) implement module specific definitions for PCI_BUS()
and AMD_IOMMU driver also has a module specific interface to calculate PCI
device id from bus number and devfn.
Add PCI_BUS_NUM and PCI_DEVID interfaces to return PCI bus number and PCI
device id respectively to avoid the need for duplicate definitions in other
modules. AER driver code and AMD IOMMU driver define PCI_BUS. AMD IOMMU
driver defines an interface to calculate device id from bus number, and
devfn pair.
PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() interfaces are exported to
user-space via uapi/linux/pci.h. However, in the interest to keep the new
interfaces as kernel only and not export them to user-space unnecessarily,
added them to linux/pci.h instead.
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
ip-header id needs to be incremented even if IP_DF flag is set.
This behaviour was changed in commit 490ab08127
(IP_GRE: Fix IP-Identification).
Following patch fixes it so that identification is always
incremented.
Reported-by: Cong Wang <amwang@redhat.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch series covers both ASoC and extcon subsystems and fixes an
interaction between the HPDET function and the headphone outputs - we
really shouldn't run HPDET while the headphone is active. The first
patch is a refactoring to make the extcon side easier.
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Merge tag 'arizona-extcon-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc into char-misc-next
Mark writes:
ASoC/extcon: arizona: Fix interaction between HPDET and headphone outputs
This patch series covers both ASoC and extcon subsystems and fixes an
interaction between the HPDET function and the headphone outputs - we
really shouldn't run HPDET while the headphone is active. The first
patch is a refactoring to make the extcon side easier.
Running HPDET while the headphone outputs are enabled can disrupt the
operation of HPDET. In order to avoid this HPDET needs to disable the
headphone outputs and ASoC needs to not enable them while HPDET is
running.
Do the ASoC side of this by storing the enable state in the core driver
structure and only writing to the device if a flag indicating that the
accessory detection side is in a state where it can have the headphone
output stage enabled.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Split discovery initialization in code that is setup once (fcoe_disc_init)
and code that can be re-configured (fcoe_disc_config).
Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Jack Morgan <jack.morgan@intel.com>
Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
