Commit graph

37219 commits

Author SHA1 Message Date
Jan Blunck
c15271f4e7 ext2: Add ext2_sb_info s_lock spinlock
Add a spinlock that protects against concurrent modifications of
s_mount_state, s_blocks_last, s_overhead_last and the content of the
superblock's buffer pointed to by sbi->s_es. The spinlock is now used in
ext2_xattr_update_super_block() which was setting the
EXT2_FEATURE_COMPAT_EXT_ATTR flag on the superblock without protection
before. Likewise the spinlock is used in ext2_show_options() to have a
consistent view of the mount options.

This is a preparation patch for removing the BKL from ext2 in the next
patch.

Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jan Kara <jack@suse.cz>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Jan Kara <jack@suse.cz>
2010-05-21 19:30:39 +02:00
Linus Torvalds
d7dbf4ffee Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (23 commits)
  nilfs2: disallow remount of snapshot from/to a regular mount
  nilfs2: use huge_encode_dev/huge_decode_dev
  nilfs2: update comment on deactivate_super at nilfs_get_sb
  nilfs2: replace MS_VERBOSE with MS_SILENT
  nilfs2: add missing initialization of s_mode
  nilfs2: fix misuse of open_bdev_exclusive/close_bdev_exclusive
  nilfs2: enlarge s_volume_name member in nilfs_super_block
  nilfs2: use checkpoint number instead of timestamp to select super block
  nilfs2: add missing endian conversion on super block magic number
  nilfs2: make nilfs_sc_*_ops static
  nilfs2: add kernel doc comments to persistent object allocator functions
  nilfs2: change sc_timer from a pointer to an embedded one in struct nilfs_sc_info
  nilfs2: remove nilfs_segctor_init() in segment.c
  nilfs2: insert checkpoint number in segment summary header
  nilfs2: add a print message after loading nilfs2
  nilfs2: cleanup multi kmem_cache_{create,destroy} code
  nilfs2: move out checksum routines to segment buffer code
  nilfs2: move pointer to super root block into logs
  nilfs2: change default of 'errors' mount option to 'remount-ro' mode
  nilfs2: Combine nilfs_btree_release_path() and nilfs_btree_free_path()
  ...
2010-05-21 07:47:00 -07:00
Linus Torvalds
05ec7dd8dd Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (154 commits)
  mtd: cfi_cmdset_0002: use AMD standard command-set with Winbond flash chips
  mtd: cfi_cmdset_0002: Fix MODULE_ALIAS and linkage for new 0701 commandset ID
  mtd: mxc_nand: Remove duplicate NAND_CMD_RESET case value
  mtd: update gfp/slab.h includes
  jffs2: Stop triggering block erases from jffs2_write_super()
  jffs2: Rename jffs2_erase_pending_trigger() to jffs2_dirty_trigger()
  jffs2: Use jffs2_garbage_collect_trigger() to trigger pending erases
  jffs2: Require jffs2_garbage_collect_trigger() to be called with lock held
  jffs2: Wake GC thread when there are blocks to be erased
  jffs2: Erase pending blocks in GC pass, avoid invalid -EIO return
  jffs2: Add 'work_done' return value from jffs2_erase_pending_blocks()
  mtd: mtdchar: Do not corrupt backing device of device node inode
  mtd/maps/pcmciamtd: Fix printk format for ssize_t in debug messages
  drivers/mtd: Use kmemdup
  mtd: cfi_cmdset_0002: Fix argument order in bootloc warning
  mtd: nand: add Toshiba TC58NVG0 device ID
  pcmciamtd: add another ID
  pcmciamtd: coding style cleanups
  pcmciamtd: fixing obvious errors
  mtd: chips: add SST39WF160x NOR-flashes
  ...

Trivial conflicts due to dev_node removal in drivers/mtd/maps/pcmciamtd.c
2010-05-21 07:25:43 -07:00
Linus Torvalds
33cf23b0a5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (182 commits)
  [SCSI] aacraid: add an ifdef'd device delete case instead of taking the device offline
  [SCSI] aacraid: prohibit access to array container space
  [SCSI] aacraid: add support for handling ATA pass-through commands.
  [SCSI] aacraid: expose physical devices for models with newer firmware
  [SCSI] aacraid: respond automatically to volumes added by config tool
  [SCSI] fcoe: fix fcoe module ref counting
  [SCSI] libfcoe: FIP Keep-Alive messages for VPorts are sent with incorrect port_id and wwn
  [SCSI] libfcoe: Fix incorrect MAC address clearing
  [SCSI] fcoe: fix a circular locking issue with rtnl and sysfs mutex
  [SCSI] libfc: Move the port_id into lport
  [SCSI] fcoe: move link speed checking into its own routine
  [SCSI] libfc: Remove extra pointer check
  [SCSI] libfc: Remove unused fc_get_host_port_type
  [SCSI] fcoe: fixes wrong error exit in fcoe_create
  [SCSI] libfc: set seq_id for incoming sequence
  [SCSI] qla2xxx: Updates to ISP82xx support.
  [SCSI] qla2xxx: Optionally disable target reset.
  [SCSI] qla2xxx: ensure flash operation and host reset via sg_reset are mutually exclusive
  [SCSI] qla2xxx: Silence bogus warning by gcc for wrap and did.
  [SCSI] qla2xxx: T10 DIF support added.
  ...
2010-05-21 07:19:18 -07:00
Linus Torvalds
7a9b149212 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (229 commits)
  USB: remove unused usb_buffer_alloc and usb_buffer_free macros
  usb: musb: update gfp/slab.h includes
  USB: ftdi_sio: fix legacy SIO-device header
  USB: kl5usb105: reimplement using generic framework
  USB: kl5usb105: minor clean ups
  USB: kl5usb105: fix memory leak
  USB: io_ti: use kfifo to implement write buffering
  USB: io_ti: remove unsused private counter
  USB: ti_usb: use kfifo to implement write buffering
  USB: ir-usb: fix incorrect write-buffer length
  USB: aircable: fix incorrect write-buffer length
  USB: safe_serial: straighten out read processing
  USB: safe_serial: reimplement read using generic framework
  USB: safe_serial: reimplement write using generic framework
  usb-storage: always print quirks
  USB: usb-storage: trivial debug improvements
  USB: oti6858: use port write fifo
  USB: oti6858: use kfifo to implement write buffering
  USB: cypress_m8: use kfifo to implement write buffering
  USB: cypress_m8: remove unused drain define
  ...

Fix up conflicts (due to usb_buffer_alloc/free renaming) in
	drivers/input/tablet/acecad.c
	drivers/input/tablet/kbtab.c
	drivers/input/tablet/wacom_sys.c
	drivers/media/video/gspca/gspca.c
	sound/usb/usbaudio.c
2010-05-20 21:26:12 -07:00
Linus Torvalds
f8965467f3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits)
  qlcnic: adding co maintainer
  ixgbe: add support for active DA cables
  ixgbe: dcb, do not tag tc_prio_control frames
  ixgbe: fix ixgbe_tx_is_paused logic
  ixgbe: always enable vlan strip/insert when DCB is enabled
  ixgbe: remove some redundant code in setting FCoE FIP filter
  ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp
  ixgbe: fix header len when unsplit packet overflows to data buffer
  ipv6: Never schedule DAD timer on dead address
  ipv6: Use POSTDAD state
  ipv6: Use state_lock to protect ifa state
  ipv6: Replace inet6_ifaddr->dead with state
  cxgb4: notify upper drivers if the device is already up when they load
  cxgb4: keep interrupts available when the ports are brought down
  cxgb4: fix initial addition of MAC address
  cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
  cnic: Convert cnic_local_flags to atomic ops.
  can: Fix SJA1000 command register writes on SMP systems
  bridge: fix build for CONFIG_SYSFS disabled
  ARCNET: Limit com20020 PCI ID matches for SOHARD cards
  ...

Fix up various conflicts with pcmcia tree drivers/net/
{pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and
wireless/orinoco/spectrum_cs.c} and feature removal
(Documentation/feature-removal-schedule.txt).

Also fix a non-content conflict due to pm_qos_requirement getting
renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c
2010-05-20 21:04:44 -07:00
Linus Torvalds
7c6d87ac84 Merge branch 'viafb-next' of git://git.lwn.net/linux-2.6
* 'viafb-next' of git://git.lwn.net/linux-2.6: (35 commits)
  viafb: move some include files to include/linux
  viafb: Eliminate some global.h references
  viafb: get rid of i2c debug cruft
  viafb: fold via_io.h into via-core.h
  viafb: Fix initialization error paths
  viafb: Do not remove gpiochip under spinlock
  viafb: make procfs entries optional
  viafb: fix proc entry removal
  viafb: improve misc register handling
  viafb: replace inb/outb
  viafb: move some modesetting functions to a seperate file
  viafb: unify modesetting functions
  viafb: Reserve framebuffer memory for the upcoming camera driver
  viafb: Add a simple VX855 DMA engine driver
  viafb: Add a simple interrupt management infrastructure
  via: Rationalize vt1636 detection
  viafb: Introduce viafb_find_i2c_adapter()
  via: Do not attempt I/O on inactive I2C adapters
  viafb: Turn GPIO and i2c into proper platform devices
  viafb: Convert GPIO and i2c to the new indexed port ops
  ...
2010-05-20 13:34:17 -07:00
Greg Kroah-Hartman
e26bcf3723 USB: remove unused usb_buffer_alloc and usb_buffer_free macros
Now that all callers are converted over, remove the compatibility
functions and all is good.

Cc: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:50 -07:00
Greg Kroah-Hartman
0858a3a52f USB: include/usb/*.h checkpatch cleanup
Lots of minor formatting cleanups in includes/usb/ to make checkpatch
happier.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:47 -07:00
Greg Kroah-Hartman
812219ab8f USB: usb.h: checkpatch cleanups
Minor formatting changes to clean up the file.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:47 -07:00
Ming Lei
22b4b6113e USB: remove usb_find_device
Now on one uses this function and it seems useless,
so remove usb_find_device.

[tom@tom linux-2.6-next]$ grep -r -n -I usb_find_device ./
drivers/media/dvb/dvb-usb/dvb-usb-init.c:160:static struct
dvb_usb_device_description * dvb_usb_find_device(struct usb_device
*udev,struct dvb_usb_device_properties *props, int *cold)

drivers/media/dvb/dvb-usb/dvb-usb-init.c:230:   if ((desc =
dvb_usb_find_device(udev,props,&cold)) == NULL) {

drivers/usb/core/usb.c:630: * usb_find_device - find a specific usb device in the system
drivers/usb/core/usb.c:642:struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:45 -07:00
Michal Nazarewicz
ddf8abd259 USB: f_fs: the FunctionFS driver
The FunctionFS is a USB composite function that can be used
with the composite framework to create an USB gadget.

>From kernel point of view it is just a composite function with
some unique behaviour.  It may be added to an USB
configuration only after the user space driver has registered
by writing descriptors and strings (the user space program has
to provide the same information that kernel level composite
functions provide when they are added to the configuration).

>From user space point of view it is a file system which when
mounted provide an "ep0" file.  User space driver need to
write descriptors and strings to that file.  It does not need
to worry about endpoints, interfaces or strings numbers but
simply provide descriptors such as if the function was the
only one (endpoints and strings numbers starting from one and
interface numbers starting from core).  The FunctionFS changes
numbers of those as needed also handling situation when
numbers differ in different configurations.

When descriptors and strings are written "ep#" files appear
(one for each declared endpoint) which handle communication on
a single endpoint.  Again, FunctionFS takes care of the real
numbers and changing of the configuration (which means that
"ep1" file may be really mapped to (say) endpoint 3 (and when
configuration changes to (say) endpoint 2)).  "ep0" is used
for receiving events and handling setup requests.

When all files are closed the function disables itself.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:43 -07:00
Michal Nazarewicz
22c43c81a5 wait_event_interruptible_locked() interface
New wait_event_interruptible{,_exclusive}_locked{,_irq} macros added.
They work just like versions without _locked* suffix but require the
wait queue's lock to be held.  Also __wake_up_locked() is now exported
as to pair it with the above macros.

The use case of this new facility is when one uses wait queue's lock
to  protect a data structure.  This may be advantageous if the
structure needs to be protected by a spinlock anyway.  In particular,
with additional spinlock the following code has to be used to wait
for a condition:

spin_lock(&data.lock);
...
for (ret = 0; !ret && !(condition); ) {
	spin_unlock(&data.lock);
	ret = wait_event_interruptible(data.wqh, (condition));
	spin_lock(&data.lock);
}
...
spin_unlock(&data.lock);

This looks bizarre plus wait_event_interruptible() locks the wait
queue's lock anyway so there is a unlock+lock sequence where it could
be avoided.

To avoid those problems and benefit from wait queue's lock, a code
similar to the following should be used:

/* Waiting */
spin_lock(&data.wqh.lock);
...
ret = wait_event_interruptible_locked(data.wqh, (condition));
...
spin_unlock(&data.wqh.lock);

/* Waiting exclusively */
spin_lock(&data.whq.lock);
...
ret = wait_event_interruptible_exclusive_locked(data.whq, (condition));
...
spin_unlock(&data.whq.lock);

/* Waking up */
spin_lock(&data.wqh.lock);
...
wake_up_locked(&data.wqh);
...
spin_unlock(&data.wqh.lock);

When spin_lock_irq() is used matching versions of macros need to be
used (*_locked_irq()).

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:42 -07:00
Johan Hovold
c23e5fc1f7 USB: serial: remove multi-urb write from generic driver
Remove multi-urb write from the generic driver and simplify the
prepare_write_buffer prototype:

	int (*prepare_write_buffer)(struct usb_serial_port *port,
						void *dest, size_t size);

The default implementation simply fills dest with data from port write
fifo but drivers can override it if they need to process the outgoing
data (e.g. add headers).

Turn ftdi_sio into a generic fifo-based driver, which lowers CPU usage
significantly for small writes while retaining maximum throughput.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:42 -07:00
Johan Hovold
27c7acf220 USB: serial: reimplement generic fifo-based writes
Reimplement fifo-based writes in the generic driver using a multiple
pre-allocated urb scheme.

In contrast to multi-urb writes, no allocations (of urbs or buffers) are
made during run-time and there is less pressure on the host stack
queues as currently only two urbs are used (implementation is generic
and can handle more than two urbs as well, though).

Initial tests using ftdi_sio show that the implementation achieves the
same (maximum) throughput at high baudrates as multi-urb writes. The CPU
usage is much lower than for multi-urb writes for small write requests
and only slightly higher for large (e.g. 2k) requests (due to extra copy
via fifo?).

Also outperforms multi-urb writes for small write requests on an
embedded arm-9 system, where multi-urb writes are CPU-bound at high
baudrates (perf reveals that a lot of time is spent in the host stack
enqueue function -- could perhaps be a bug as well).

Keeping the original write_urb, buffer and flag for now as there are
other drivers depending on them.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:42 -07:00
Alan Stern
0ba169aff9 USB: simplify usb_sg_init()
This patch (as1377) simplifies the code in usb_sg_init(), without
changing its functionality.  It also removes a couple of unused fields
from the usb_sg_request structure.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:42 -07:00
Matthew Wilcox
910f8d0ced USB: Change the scatterlist type in struct urb
Change the type of the URB's 'sg' pointer from a usb_sg_request to
a scatterlist.  This allows drivers to submit scatter-gather lists
without using the usb_sg_wait() interface.  It has the added benefit
of removing the typecasts that were added as part of patch as1368 (and
slightly decreasing the number of pointer dereferences).

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:41 -07:00
Matthew Wilcox
1e429018b6 USB: Turn interface_to_usbdev into an inline function
The stronger type-checking would have prevented a bug I had.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:41 -07:00
Matthew Wilcox
fe54b058de USB: Add a usb_pipe_endpoint() convenience function
Converting a pipe number to a struct usb_host_endpoint pointer is a little
messy.  Introduce a new convenience function to hide the mess.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:41 -07:00
Matthew Wilcox
b18a23495f USB: Add definition for the Pipe Usage descriptor
The Pipe Usage descriptor is needed for USB Attached SCSI

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:41 -07:00
Alan Stern
85bcb5ee88 USB: remove URB_NO_SETUP_DMA_MAP
Now that URB_NO_SETUP_DMA_MAP is no longer in use, this patch (as1376)
removes all references to it.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:40 -07:00
Alan Stern
842f16905d USB: remove the usb_host_ss_ep_comp structure
This patch (as1375) eliminates the usb_host_ss_ep_comp structure used
for storing a dynamically-allocated copy of the SuperSpeed endpoint
companion descriptor.  The SuperSpeed descriptor is placed directly in
the usb_host_endpoint structure, alongside the standard endpoint
descriptor.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:40 -07:00
Alan Stern
3b02ca3218 USB: export the new ch11.h file to userspce
This patch (as1374) cleans up a few loose ends in the
include/linux/usb/ch11.h header file and exports it to userspace.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Eric Lescouet <Eric.Lescouet@virtuallogix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:40 -07:00
Fabien Chouteau
f48cf80f93 USB: Composite framework: Add suspended sysfs entry
This patch adds a sysfs entry (/sys/devices/platform/_UDC_/gadget/suspended) to
show the suspend state of an USB composite gadget.

Signed-off-by: Fabien Chouteau <fabien.chouteau@barco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:39 -07:00
Yauheni Kaliuta
65e0b49910 USB: ncm: added ncm.h with auxiliary definitions
Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:39 -07:00
Yauheni Kaliuta
01154aa714 usb: cdc: ncm constants and structures added
Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:39 -07:00
Sarah Sharp
eab1cafc3b USB: Support for allocating USB 3.0 streams.
Bulk endpoint streams were added in the USB 3.0 specification.  Streams
allow a device driver to overload a bulk endpoint so that multiple
transfers can be queued at once.

The device then decides which transfer it wants to work on first, and can
queue part of a transfer before it switches to a new stream.  All this
switching is invisible to the device driver, which just gets a completion
for the URB.  Drivers that use streams must be able to handle URBs
completing in a different order than they were submitted to the endpoint.

This requires adding new API to set up xHCI data structures to support
multiple queues ("stream rings") per endpoint.  Drivers will allocate a
number of stream IDs before enqueueing URBs to the bulk endpoints of the
device, and free the stream IDs in their disconnect function.  See
Documentation/usb/bulk-streams.txt for details.

The new mass storage device class, USB Attached SCSI Protocol (UASP), uses
these streams API.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:38 -07:00
Sarah Sharp
94af122098 USB: Add stream ID field to struct urb.
Bulk endpoint streams were added in the USB 3.0 specification.  Streams
allow a device driver to overload a bulk endpoint so that multiple
transfers can be queued at once.

Add a new field, stream_id, to struct urb so that USB 3.0 drivers can
specify which stream they want the URB to be queued to.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:37 -07:00
Sarah Sharp
22ad1e7f86 USB: Add parsing of SuperSpeed endpoint companion descriptor.
Allow the xHCI drivers (and any new USB 3.0 drivers) to parse the
SuperSpeed endpoint companion descriptor to find the maximum number of
bulk endpoint streams the endpoint supports.  This is used to calculate
the maximum total number of streams the driver can allocate.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:37 -07:00
Alan Stern
9e18c82165 USB: use PM core routines to enable/disable autosuspend
This patch (as1366) replaces the private routines
usb_enable_autosuspend() and usb_disable_autosuspend() with calls to
the standard pm_runtime_allow() and pm_runtime_forbid() functions in
the runtime PM framework.  They do the same thing.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:37 -07:00
Alan Stern
ff9c895f07 USB: fix usbmon and DMA mapping for scatter-gather URBs
This patch (as1368) fixes a rather obscure bug in usbmon: When tracing
URBs sent by the scatter-gather library, it accesses the data buffers
while they are still mapped for DMA.

The solution is to move the mapping and unmapping out of the s-g
library and into the usual place in hcd.c.  This requires the addition
of new URB flag bits to describe the kind of mapping needed, since we
have to call dma_map_sg() if the HCD supports native scatter-gather
operation and dma_map_page() if it doesn't.  The nice thing about
having the new flags is that they simplify the testing for unmapping.

The patch removes the only caller of usb_buffer_[un]map_sg(), so those
functions are #if'ed out.  A later patch will remove them entirely.

As a result of this change, urb->sg will be set in situations where
it wasn't set previously.  Hence the xhci and whci drivers are
adjusted to test urb->num_sgs instead, which retains its original
meaning and is nonzero only when the HCD has to handle a scatterlist.

Finally, even when a submission error occurs we don't want to hand
URBs to usbmon before they are unmapped.  The submission path is
rearranged so that map_urb_for_dma() is called only for non-root-hub
URBs and unmap_urb_for_dma() is called immediately after a submission
error.  This simplifies the error handling.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:37 -07:00
Heikki Krogerus
3a229eb139 usb: otg: add global ULPI register definitions
Definitions for registers defined by ULPI specification v1.1.

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:36 -07:00
Fabien Chouteau
71adf11894 USB: gadget: add HID gadget driver
g_hid is a USB gadget driver implementing the Human Interface Device class
specification. The driver handles basic HID protocol handling in the
kernel, and allows userspace to read/write HID reports trough /dev/hidgX
character devices.

Signed-off-by: Fabien Chouteau <fabien.chouteau@barco.com>
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:35 -07:00
Johan Hovold
eaa3bcb06a USB: serial: generalise write buffer preparation
Generalise write buffer preparation.

This allows for drivers to manipulate (e.g. add headers) to bulk out
data before it is sent.

This adds a new function pointer to usb_serial_driver:

int (*prepare_write_buffer)(struct usb_serial_port *port,
		void **dest, size_t size, const void *src, size_t count);

The function is generic and can be used with either kfifo-based or
multi-urb writes:

If *dest is NULL the implementation should allocate dest.
If src is NULL the implementation should use the port write fifo.

If not set, a generic implementation is used which simply uses memcpy or
kfifo_out.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:35 -07:00
Johan Hovold
25d514ca22 USB: serial: re-implement multi-urb writes in generic driver
Use dynamic transfer buffer sizes since it is more efficient to let the
host controller do the partitioning to fit endpoint size. This way we
also do not use more than one urb per write request.

Replace max_in_flight_urbs with multi_urb_write flag in struct
usb_serial_driver to enable multi-urb writes.

Use MAX_TX_URBS=40 and a max buffer size of PAGE_SIZE to prevent DoS
attacks.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:35 -07:00
Johan Hovold
2315432064 USB: serial: generalise generic read implementation
Add process_read_urb to usb_serial_driver so that a driver can rely on
the generic read (and throttle) mechanism but still do device specific
processing of incoming data (such as adding tty_flags before pushing to
line discipline).

The default generic implementation handles sysrq for consoles but
otherwise simply pushes to tty.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:34 -07:00
Johan Hovold
41bd72f904 USB: serial: refactor read urb submission in generic driver
Use the already exported function for submitting the read urb associated
with a usb_serial_port.

Make sure it returns the result of usb_submit_urb and rename to the
more descriptive usb_serial_generic_submit_read_urb.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:33 -07:00
Johan Hovold
bbcb2b9074 USB: serial: allow drivers to define bulk buffer sizes
Allow drivers to define custom bulk in/out buffer sizes in struct
usb_serial_driver. If not set, fall back to the default buffer size
which matches the endpoint size.

Three drivers are currently freeing the pre-allocated buffers and
allocating larger ones to achieve this at port probe (ftdi_sio) or even
at port open (ipaq and iuu_phoenix), which needless to say is suboptimal.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:33 -07:00
Hans de Goede
317149c655 USB: Add a new quirk: USB_QUIRK_HONOR_BNUMINTERFACES
Add a new quirk USB_QUIRK_HONOR_BNUMINTERFACES, when this quirk is
set and a device has more interface descriptors in a configuration
then it claims to have in config->bNumInterfaces, ignore all additional
interfaces.

This is needed for devices which try to hide unused interfaces by only
lowering config->bNumInterfaces, and which can't handle if you try to talk
to the "hidden" interfaces.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:32 -07:00
Cliff Cai
6ddc6dae4a USB: musb: allow the Blackfin vrsel gpio to be active low
Rather than hardcoding the gpio levels for vrsel, allow the platform
resources to handle this so boards can be active high or low.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:32 -07:00
Felipe Balbi
e6c213b296 usb: musb: allow board to pass down fifo mode
boards might want to optimize their fifo configuration
to the particular needs of that specific board. Allow
that by moving all related data structures to
<linux/usb/musb.h>

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:31 -07:00
Jason Wessel
bd5afa9eac usb-serial: Use tty_port version console instead of usb_serial_port
Replace all instances of using the console variable in struct
usb_serial_port with the struct tty_port version.

CC: Alan Cox <alan@linux.intel.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-usb@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:31 -07:00
Alan Stern
288ead45fa USB: remove bogus USB_PORT_FEAT_*_SPEED symbols
This patch (as1348) removes the bogus
USB_PORT_FEAT_{HIGHSPEED,SUPERSPEED} symbols from ch11.h.  No such
features are defined by the USB spec.  (There is a PORT_LOWSPEED
feature, but the spec doesn't mention it except to say that host
software should never use it.)  The speed indicators are port
statuses, not port features.

As a temporary workaround for the xhci-hcd driver, a fictional
USB_PORT_STAT_SUPER_SPEED symbol is added.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:31 -07:00
Eric Lescouet
d20db4b4e9 USB: split hub.h into ch11.h and merge-in hcd.h
Base on inputs from Alan Stern, split the hub.h header into:
- new ch11.h header (most of it) containing constants and
  structures from chapter 11 of the USB 2.0 spec.
- a small remaining part being merged into hcd.h.

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:30 -07:00
Eric Lescouet
d65d7e7ef3 USB: make hub.h public (drivers dependency)
The usbcore headers: hcd.h and hub.h are shared between usbcore,
HCDs and a couple of other drivers (e.g. USBIP modules).
So, it makes sense to move them into a more public location and
to cleanup dependency of those modules on kernel internal headers.
This patch moves hub.h from drivers/usb/core into include/linux/usb/

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:30 -07:00
Eric Lescouet
27729aadd3 USB: make hcd.h public (drivers dependency)
The usbcore headers: hcd.h and hub.h are shared between usbcore,
HCDs and a couple of other drivers (e.g. USBIP modules).
So, it makes sense to move them into a more public location and
to cleanup dependency of those modules on kernel internal headers.
This patch moves hcd.h from drivers/usb/core into include/linux/usb/

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:30 -07:00
Linus Torvalds
a0fe3cc5d3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
  Input: psmouse - small formatting changes to better follow coding style
  Input: synaptics - set dimensions as reported by firmware
  Input: elantech - relax signature checks
  Input: elantech - enforce common prefix on messages
  Input: wistron_btns - switch to using kmemdup()
  Input: usbtouchscreen - switch to using kmemdup()
  Input: do not force selecting i8042 on Moorestown
  Input: Documentation/sysrq.txt - update KEY_SYSRQ info
  Input: 88pm860x_onkey - remove invalid irq number assignment
  Input: i8042 - add a PNP entry to the aux device list
  Input: i8042 - add some extra PNP keyboard types
  Input: wm9712 - fix wm97xx_set_gpio() logic
  Input: add keypad driver for keys interfaced to TCA6416
  Input: remove obsolete {corgi,spitz,tosa}kbd.c
  Input: kbtab - do not advertise unsupported events
  Input: kbtab - simplify kbtab_disconnect()
  Input: kbtab - fix incorrect size parameter in usb_buffer_free
  Input: acecad - don't advertise mouse events
  Input: acecad - fix some formatting issues
  Input: acecad - simplify usb_acecad_disconnect()
  ...

Trivial conflict in Documentation/feature-removal-schedule.txt
2010-05-20 10:33:06 -07:00
Linus Torvalds
04afb40593 Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (22 commits)
  ACPI: fix early DSDT dmi check warnings on ia64
  ACPICA: Update version to 20100428.
  ACPICA: Update/clarify some parameter names associated with acpi_handle
  ACPICA: Rename acpi_ex_system_do_suspend->acpi_ex_system_do_sleep
  ACPICA: Prevent possible allocation overrun during object copy
  ACPICA: Split large file, evgpeblk
  ACPICA: Add GPE support for dynamically loaded ACPI tables
  ACPICA: Clarify/rename some root table descriptor fields
  ACPICA: Update version to 20100331.
  ACPICA: Minimize the differences between linux GPE code and ACPICA code base
  ACPI: add boot option acpi=copy_dsdt to fix corrupt DSDT
  ACPICA: Update DSDT copy/detection.
  ACPICA: Add subsystem option to force copy of DSDT to local memory
  ACPICA: Add detection of corrupted/replaced DSDT
  ACPICA: Add write support for DataTable operation regions
  ACPICA: Fix for acpi_reallocate_root_table for incorrect root table copy
  ACPICA: Update comments/headers, no functional change
  ACPICA: Update version to 20100304
  ACPICA: Fix for possible fault in acpi_ex_release_mutex
  ACPICA: Standardize integer output for ACPICA warnings/errors
  ...
2010-05-20 09:45:38 -07:00
Linus Torvalds
7f06a8b26a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (250 commits)
  ALSA: hda: Storage class should be before const qualifier
  ASoC: tpa6130a2: Remove CPVSS and HPVdd supplies
  ASoC: tpa6130a2: Define output pins with SND_SOC_DAPM_OUTPUT
  ASoC: sdp4430 - add sdp4430 pcm ops to DAI.
  ASoC: TWL6040: Enable earphone path in codec
  ASoC: SDP4430: Add support for Earphone speaker
  ASoC: SDP4430: Add sdp4430 machine driver
  ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF
  ASoC: tlv320dac33: Use dev_dbg in dac33_hard_power function
  ALSA: sound/pci/asihpi: Use kzalloc
  ALSA: hdmi - dont fail on extra nodes
  ALSA: intelhdmi - add id for the CougarPoint chipset
  ALSA: intelhdmi - user friendly codec name
  ALSA: intelhdmi - add dependency on SND_DYNAMIC_MINORS
  ALSA: asihpi: incorrect range check
  ALSA: asihpi: testing the wrong variable
  ALSA: es1688: add pedantic range checks
  ARM: McBSP: Add support for omap4 in McBSP driver
  ARM: McBSP: Fix request for irq in OMAP4
  OMAP: McBSP: Add 32-bit mode support
  ...
2010-05-20 09:41:44 -07:00
Linus Torvalds
c3ad33c9bc Merge branch 'for-linus/i2c-2635' of git://git.fluff.org/bjdooks/linux
* 'for-linus/i2c-2635' of git://git.fluff.org/bjdooks/linux: (21 commits)
  i2c-highlander: remover superflous variable
  i2c-ibm-iic: drop NO_IRQ
  i2c-cpm: drop NO_IRQ
  i2c-mpc: drop NO_IRQ
  MAINTAINERS: add i2c tree for embedded platforms
  i2c-pxa: only define 'blue_murder'-function if DEBUG is #defined
  i2c-pxa: remove unused macro
  i2c-nomadik: fix operator precedence warning
  i2c-nomadik: release region when removed
  OMAP3: I2C: Clean up Errata 1p153 handling
  OMAP2/3: I2C: Errata ID i207: Clear wrong RDR interrupt
  omap: i2c: add a timeout to the busy waiting
  omap: i2c: make errata 1.153 workaround a separate function
  i2c-omap: add mpu wake up latency constraint in i2c
  omap: i2c: Add i2c support on omap4 platform
  i2c-bfin-twi: return completion in interrupt for smbus quick transfers
  i2c-bfin-twi: remove redundant retry
  i2c-bfin-twi: fix lost interrupts at high speeds
  i2c-bfin-twi: add debug output for error status
  i2c-bfin-twi: integrate timeout timer with completion interface
  ...
2010-05-20 09:41:17 -07:00