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Alexandre Bounine e680b672a2 rapidio/tsi721_dma: fix synchronization issues 
Fix synchronization issues found during testing using multiple DMA
transfer requests to the same channel:

 - lost MSI-X interrupt notifications
 - non-synchronized attempts to start DMA channel HW resulting in error
   message from the driver
 - cookie tracking/update race conditions resulting in incorrect DMA
   transfer status report

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Reported-by: Barry Wood <barry.wood@idt.com>
Tested-by: Barry Wood <barry.wood@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Barry Wood <barry.wood@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-22 15:36:02 -07:00
..
accessibility
acpi libnvdimm for 4.6 2016-03-16 17:45:56 -07:00
amba
android
ata Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2016-03-18 20:06:46 -07:00
atm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
auxdisplay
base Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2016-03-19 16:31:54 -07:00
bcma
block virtio/vhost: new features, performance improvements, cleanups 2016-03-20 13:28:18 -07:00
bluetooth
bus arm[64] perf updates for 4.6: 2016-03-21 13:14:16 -07:00
cdrom
char Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
clk ARM: SoC driver updates for v4.6 2016-03-20 15:40:32 -07:00
clocksource One of the largest releases for KVM... Hardly any generic improvement, 2016-03-16 09:55:35 -07:00
connector
cpufreq ARM: SoC driver updates for v4.6 2016-03-20 15:40:32 -07:00
cpuidle
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
dca
devfreq
dio
dma ARM: SoC platform updates for v4.6 2016-03-20 14:57:08 -07:00
dma-buf
edac EDAC queue for 4.6 2016-03-16 08:36:55 -07:00
eisa
extcon
firewire firewire: use in_compat_syscall to check ioctl compatness 2016-03-22 15:36:02 -07:00
firmware drivers/firmware/efi/efivars.c: use in_compat_syscall() to check for compat callers 2016-03-22 15:36:02 -07:00
fmc
fpga
gpio - New Drivers 2016-03-18 10:15:11 -07:00
gpu drivers/gpu/drm/amd/amdkfd: use in_compat_syscall to check open() caller type 2016-03-22 15:36:02 -07:00
hid drivers/hid/uhid.c: check write() bitness using in_compat_syscall 2016-03-22 15:36:02 -07:00
hsi
hv Char/Misc patches for 4.6-rc1 2016-03-17 13:47:50 -07:00
hwmon ARM: SoC driver updates for v4.6 2016-03-20 15:40:32 -07:00
hwspinlock
hwtracing
i2c
ide ide: hpt366: convert to use match_string() helper 2016-03-17 15:09:34 -07:00
idle
iio - New Drivers 2016-03-18 10:15:11 -07:00
infiniband Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
input input: redefine INPUT_COMPAT_TEST as in_compat_syscall() 2016-03-22 15:36:02 -07:00
iommu Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
ipack
irqchip
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
leds leds: triggers: simplify led_trigger_store 2016-03-14 09:22:23 +01:00
lguest
lightnvm Merge branch 'for-4.6/drivers' of git://git.kernel.dk/linux-block 2016-03-18 17:13:31 -07:00
macintosh
mailbox Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2016-03-20 12:58:32 -07:00
mcb
md Merge tag 'md/4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2016-03-21 14:18:10 -07:00
media [media] vsp1: use proper dma alloc/free functions 2016-03-21 13:49:01 -07:00
memory
memstick
message
mfd - New Drivers 2016-03-18 10:15:11 -07:00
misc Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
mmc MMC core: 2016-03-21 14:35:52 -07:00
mtd This is the bulk of GPIO changes for kernel v4.6: 2016-03-17 21:05:32 -07:00
net rapidio/rionet: add mport removal handling 2016-03-22 15:36:02 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
ntb
nubus
nvdimm Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2016-03-19 16:31:54 -07:00
nvme Merge branch 'for-4.6/drivers' of git://git.kernel.dk/linux-block 2016-03-18 17:13:31 -07:00
nvmem
of DeviceTree updates for 4.6: 2016-03-19 15:15:07 -07:00
oprofile
parisc PCI changes for the v4.6 merge window: 2016-03-16 14:45:55 -07:00
parport
pci powerpc updates for 4.6 2016-03-19 15:38:41 -07:00
pcmcia
perf drivers/perf: arm_pmu: avoid NULL dereference when not using devicetree 2016-03-21 11:36:17 +00:00
phy
pinctrl Merge branch 'akpm' (patches from Andrew) 2016-03-18 19:26:54 -07:00
platform Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
pnp
power Merge branch 'akpm' (patches from Andrew) 2016-03-18 19:26:54 -07:00
powercap
pps
ps3
ptp Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 12:13:56 -07:00
pwm
rapidio rapidio/tsi721_dma: fix synchronization issues 2016-03-22 15:36:02 -07:00
ras
regulator - New Drivers 2016-03-18 10:15:11 -07:00
remoteproc
reset
rpmsg
rtc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-03-17 21:38:27 -07:00
s390 virtio/vhost: new features, performance improvements, cleanups 2016-03-20 13:28:18 -07:00
sbus
scsi Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
sfi
sh
sn
soc ARM: SoC driver updates for v4.6 2016-03-20 15:40:32 -07:00
spi dmaengine updates for 4.6 2016-03-17 12:34:54 -07:00
spmi
ssb
staging staging/lustre: switch from is_compat_task to in_compat_syscall 2016-03-22 15:36:02 -07:00
target Configfs changes for the 4.6 merge window: 2016-03-17 16:25:46 -07:00
tc
thermal
thunderbolt
tty
uio
usb ARM: SoC driver updates for v4.6 2016-03-20 15:40:32 -07:00
uwb
vfio VFIO updates for v4.6-rc1 2016-03-17 13:05:09 -07:00
vhost
video Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
virt
virtio virtio/vhost: new features, performance improvements, cleanups 2016-03-20 13:28:18 -07:00
vlynq
vme
w1
watchdog Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
xen xen_balloon: support memory auto onlining policy 2016-03-15 16:55:16 -07:00
zorro
Kconfig
Makefile