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e50525bef5
linux/drivers
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Rajkumar Manoharan e50525bef5 ath10k: fix deadlock while processing rx_in_ord_ind 
commit 5c86d97bcc ("ath10k: combine txrx and replenish task")
introduced deadlock while processing rx in order indication message
for qca6174 based devices. While merging replenish and txrx tasklets,
replenish task should be called out of htt rx ring locking since it
is also try to acquire the same lock.

Unfortunately this issue is not exposed by other solutions (qca988x,
qca99x0 & qca4019), as rx_in_ord_ind message is specific to qca6174
based devices. This patch fixes

=============================================
[ INFO: possible recursive locking detected ]
4.7.0-rc2-wt-ath+ #1353 Tainted: G            E
---------------------------------------------
swapper/3/0 is trying to acquire lock:
 (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d7ef19>]
ath10k_htt_rx_msdu_buff_replenish+0x29/0x90 [ath10k_core]

but task is already holding lock:
 (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d82cab>]
ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core]

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(&htt->rx_ring.lock)->rlock);
  lock(&(&htt->rx_ring.lock)->rlock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

1 lock held by swapper/3/0:
 #0:  (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [<f8d82cab>]
ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core]

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=119151
Fixes: 5c86d97bcc ("ath10k: combine txrx and replenish task")
Reported-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-06-14 15:06:17 +03:00
..
accessibility
acpi Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools' 2016-05-16 16:45:48 +02:00
amba ARM: 8566/1: drivers: amba: properly handle devices with power domains 2016-05-05 19:00:40 +01:00
android
ata dmaengine updates for 4.7 2016-05-19 11:47:18 -07:00
atm
auxdisplay
base driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
bcma
block zram: introduce per-device debug_stat sysfs node 2016-05-20 17:58:30 -07:00
bluetooth Bluetooth: Add USB ID 13D3:3487 to ath3k 2016-05-13 16:54:59 +02:00
bus Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-05-19 10:02:26 -07:00
cdrom
char Merge branch 'akpm' (patches from Andrew) 2016-05-20 22:31:33 -07:00
clk It's the usual big pile of driver updates and additions, but we 2016-05-20 20:18:12 -07:00
clocksource Small release overall. 2016-05-19 11:27:09 -07:00
connector
cpufreq powerpc updates for 4.7 2016-05-20 10:12:41 -07:00
cpuidle Merge back new cpuidle material for v4.7. 2016-05-06 22:08:46 +02:00
crypto crypto: qat - change the adf_ctl_stop_devices to void 2016-05-13 17:30:18 +08:00
dca
devfreq PM / devfreq: style/typo fixes 2016-05-03 11:22:10 +09:00
dio
dma dmaengine updates for 4.7 2016-05-19 11:47:18 -07:00
dma-buf
edac Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-05-17 17:05:30 -07:00
eisa
extcon
firewire treewide: replace dev->trans_start update with helper 2016-05-04 14:16:49 -04:00
firmware driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
fmc
fpga
gpio driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
gpu x86: remove pointless uaccess_32.h complexity 2016-05-22 14:19:37 -07:00
hid Merge branch 'for-4.7/wacom' into for-linus 2016-05-17 12:42:27 +02:00
hsi HSI: omap-ssi: move omap_ssi_port_update_fclk 2016-05-09 22:45:18 +02:00
hv
hwmon
hwspinlock drivers/hwspinlock: use correct radix tree API 2016-05-20 17:58:30 -07:00
hwtracing Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
i2c Merge branch 'i2c/for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-05-19 17:48:12 -07:00
ide
idle
iio Staging and IIO driver update for 4.7-rc1 2016-05-20 22:20:48 -07:00
infiniband Primary 4.7 merge window changes 2016-05-20 14:35:07 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-05-18 17:12:23 -07:00
iommu Devicetree for 4.7: 2016-05-20 14:51:34 -07:00
ipack
irqchip irqchip: nps: add 64BIT dependency 2016-05-20 10:20:47 -07:00
isdn TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
leds leds: gpio: Support the "panic-indicator" firmware property 2016-05-06 10:26:07 +02:00
lguest
lightnvm lightnvm: reserved space calculation incorrect 2016-05-06 12:51:10 -06:00
macintosh
mailbox mailbox: Fix devm_ioremap_resource error detection code 2016-05-08 22:44:46 +05:30
mcb mcb: Delete num_cells variable which is not required 2016-05-03 15:52:28 -07:00
md Merge tag 'md/4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2016-05-19 17:25:13 -07:00
media Merge branch 'akpm' (patches from Andrew) 2016-05-19 20:00:06 -07:00
memory Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
memstick
message SCSI misc on 20160517 2016-05-18 16:38:59 -07:00
mfd - New Drivers 2016-05-20 11:10:24 -07:00
misc Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
mmc TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
mtd Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2016-05-20 10:01:38 -07:00
net ath10k: fix deadlock while processing rx_in_ord_ind 2016-06-14 15:06:17 +03:00
nfc NFC: pn533: handle interrupted commands in pn533_recv_frame 2016-05-10 00:01:47 +02:00
ntb
nubus
nvdimm libnvdimm, pfn: fix ARCH=alpha allmodconfig build failure 2016-05-06 10:20:10 -07:00
nvme Merge branch 'for-4.7/drivers' of git://git.kernel.dk/linux-block 2016-05-17 16:03:32 -07:00
nvmem Merge 4.6-rc7 into char-misc-testing 2016-05-09 09:34:49 +02:00
of Devicetree for 4.7: 2016-05-20 14:51:34 -07:00
oprofile
parisc
parport
pci Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
pcmcia
perf perf/arm: Special-case hetereogeneous CPUs 2016-05-05 10:13:59 +02:00
phy USB patches for 4.7-rc1 2016-05-20 21:12:25 -07:00
pinctrl Pin control bulk changes for the v4.7 kernel cycle: 2016-05-19 12:50:56 -07:00
platform drivers/platform/x86/wmi.c: use generic UUID library 2016-05-20 17:58:30 -07:00
pnp driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
power power supply and reset changes for the v4.7 series 2016-05-20 14:06:21 -07:00
powercap Power management material for v4.7-rc1 2016-05-16 19:17:22 -07:00
pps
ps3
ptp ptp: use memdup_user(). 2016-05-23 14:05:30 -07:00
pwm Merge remote-tracking branches 'regulator/topic/pwm', 'regulator/topic/qcom-spmi', 'regulator/topic/rk808' and 'regulator/topic/s2mps11' into regulator-next 2016-05-13 14:23:46 +01:00
rapidio rapidio/mport_cdev: fix uapi type definitions 2016-05-05 17:38:53 -07:00
ras
regulator Merge remote-tracking branches 'regulator/topic/tps6524x' and 'regulator/topic/twl' into regulator-next 2016-05-13 14:23:49 +01:00
remoteproc remoteproc: Add additional crash reasons 2016-05-12 15:50:19 -07:00
reset
rpmsg rpmsg: add THIS_MODULE to rpmsg_driver in rpmsg core 2016-05-06 11:08:58 -07:00
rtc rtc: tps6586x: rename so module can be autoloaded 2016-05-21 17:07:17 +02:00
s390 TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
sbus openprom: fix warning 2016-05-20 18:33:37 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-20 20:01:26 -07:00
sfi
sh
sn
soc ARM: SoC driver updates for v4.7 2016-05-18 13:14:02 -07:00
spi dmaengine updates for 4.7 2016-05-19 11:47:18 -07:00
spmi
ssb
staging Staging and IIO driver update for 4.7-rc1 2016-05-20 22:20:48 -07:00
target Primary 4.7 merge window changes 2016-05-20 14:35:07 -07:00
tc
thermal Thermal / ACPI / video: add INT3406 thermal driver 2016-05-11 02:15:31 +02:00
thunderbolt thunderbolt: Fix double free of drom buffer 2016-05-02 12:09:22 -05:00
tty TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
uio
usb USB patches for 4.7-rc1 2016-05-20 21:12:25 -07:00
uwb
vfio powerpc updates for 4.7 2016-05-20 10:12:41 -07:00
vhost
video Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
virt
virtio
vlynq
vme
w1 w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20 2016-05-01 14:37:49 -07:00
watchdog driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
xen Merge branch 'linus' into efi/core, to pick up fixes 2016-05-07 07:00:07 +02:00
zorro
Kconfig
Makefile