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linux/drivers
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Alexey Khoroshilov e8684c8877 irda: ali-ircc: Fix deadlock in ali_ircc_sir_change_speed() 
ali_ircc_sir_change_speed() is always called with self->lock held,
so acquiring the lock inside it leads to unavoidable deadlock.

Call graph:
ali_ircc_sir_change_speed() is called from ali_ircc_change_speed()
  ali_ircc_fir_hard_xmit() under spin_lock_irqsave(&self->lock, flags);
  ali_ircc_sir_hard_xmit() under spin_lock_irqsave(&self->lock, flags);
  ali_ircc_net_ioctl() under spin_lock_irqsave(&self->lock, flags);
  ali_ircc_dma_xmit_complete()
    ali_ircc_fir_interrupt()
      ali_ircc_interrupt() under spin_lock(&self->lock);
  ali_ircc_sir_write_wakeup()
    ali_ircc_sir_interrupt()
      ali_ircc_interrupt() under spin_lock(&self->lock);

The patch removes spin_lock/unlock from ali_ircc_sir_change_speed().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-11 16:18:33 -07:00
..
accessibility
acpi IPMI updates for 4.3 2015-09-08 18:19:17 -07:00
amba
android mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
ata Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
atm
auxdisplay
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-09-10 13:53:15 -07:00
bcma
block xen: MFN/GFN/BFN terminology changes for 4.3-rc0 2015-09-10 16:21:11 -07:00
bluetooth Bluetooth: hci_bcm: Fix crash on suspend 2015-08-28 21:09:14 +02:00
bus regmap: Changes for v4.3 2015-09-08 16:48:55 -07:00
cdrom
char IPMI updates for 4.3 2015-09-08 18:19:17 -07:00
clk ARM: SoC: late fixes and dependencies 2015-09-10 17:59:04 -07:00
clocksource - New Device Support 2015-09-04 11:35:03 -07:00
connector
cpufreq ARM: SoC: late fixes and dependencies 2015-09-10 17:59:04 -07:00
cpuidle Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-09-03 16:27:01 -07:00
crypto drivers/crypto/qat: use seq_hex_dump() to dump buffers 2015-09-10 13:29:01 -07:00
dca
devfreq
dio
dma dmaengine updates for 4.3-rc1 2015-09-04 11:10:18 -07:00
dma-buf
edac Minor stuff: AMD MCE decoding correction and xgene_edac cleanup. 2015-09-01 18:34:22 -07:00
eisa
extcon regulator: Updates for v4.3 2015-08-31 15:49:19 -07:00
firewire
firmware kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
fmc
gpio Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-09-04 15:49:32 -07:00
gpu Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux 2015-09-11 09:35:56 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-09-04 12:02:11 -07:00
hsi mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
hv
hwmon
hwspinlock
hwtracing/coresight
i2c Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2015-09-08 16:16:26 -07:00
ide
idle
iio This is the bulk of GPIO changes for the v4.3 kernel cycle: 2015-09-04 10:07:45 -07:00
infiniband mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
input xen: MFN/GFN/BFN terminology changes for 4.3-rc0 2015-09-10 16:21:11 -07:00
iommu IOMMU Updates for Linux v4.3 2015-09-08 17:22:35 -07:00
ipack
irqchip Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-08 11:36:56 -07:00
isdn libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
leds - Stop using LP855X Platform Data to control regulators 2015-09-04 11:40:40 -07:00
lguest
macintosh powerpc updates for 4.3 2015-09-03 16:41:38 -07:00
mailbox Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2015-09-05 18:11:04 -07:00
mcb
md md updates for 4.3 2015-09-05 17:52:22 -07:00
media mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
memory IOMMU Updates for Linux v4.3 2015-09-08 17:22:35 -07:00
memstick
message
mfd Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-09-04 15:49:32 -07:00
misc mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
mmc MMC core: 2015-09-08 16:33:16 -07:00
mtd MTD updates #2 for 4.3-rc1: 2015-09-09 11:17:33 -07:00
net irda: ali-ircc: Fix deadlock in ali_ircc_sir_change_speed() 2015-09-11 16:18:33 -07:00
nfc This is the bulk of GPIO changes for the v4.3 kernel cycle: 2015-09-04 10:07:45 -07:00
ntb
nubus
nvdimm libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
nvmem
of Merge branch 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2015-09-08 16:16:26 -07:00
oprofile
parisc parisc: use seq_hex_dump() to dump buffers 2015-09-10 13:29:01 -07:00
parport
pci kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
pcmcia pcmcia: soc_common: remove skt_dev_info's clk pointer 2015-09-03 16:01:03 +01:00
perf
phy This is the bulk of GPIO changes for the v4.3 kernel cycle: 2015-09-04 10:07:45 -07:00
pinctrl This is the bulk of pin control changes for the v4.3 development 2015-09-04 10:22:09 -07:00
platform platform-drivers-x86 for 4.3-1 2015-09-08 16:26:18 -07:00
pnp
power Power management and ACPI material for v4.3-rc1 2015-09-01 19:45:46 -07:00
powercap powercap / RAPL: disable the 2nd power limit properly 2015-08-29 01:46:40 +02:00
pps
ps3
ptp
pwm pwm: Changes for v4.3-rc1 2015-09-09 10:55:32 -07:00
rapidio
ras
regulator regmap: Changes for v4.3 2015-09-08 16:48:55 -07:00
remoteproc
reset reset: ath79: Fix missing spin_lock_init 2015-09-01 14:48:40 +02:00
rpmsg
rtc rtc: abx80x: fix RTC write bit 2015-09-05 19:37:31 +02:00
s390 drivers/s390/crypto/zcrypt_api.c: use seq_hex_dump() to dump buffers 2015-09-10 13:29:01 -07:00
sbus
scsi xen: MFN/GFN/BFN terminology changes for 4.3-rc0 2015-09-10 16:21:11 -07:00
sfi
sh
sn
soc ARM: SoC: late fixes and dependencies 2015-09-10 17:59:04 -07:00
spi Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/xcomm' and 'spi/topic/xlp' into spi-next 2015-08-31 14:45:45 +01:00
spmi Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-01 14:33:35 -07:00
ssb
staging mm: mark most vm_operations_struct const 2015-09-10 13:29:01 -07:00
target Merge branch 'for-4.3/sg' of git://git.kernel.dk/linux-block 2015-09-02 13:22:38 -07:00
tc
thermal regmap: Changes for v4.3 2015-09-08 16:48:55 -07:00
thunderbolt
tty xen: MFN/GFN/BFN terminology changes for 4.3-rc0 2015-09-10 16:21:11 -07:00
uio
usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-09-01 18:46:42 -07:00
uwb
vfio
vhost
video Merge branch 'akpm' (patches from Andrew) 2015-09-10 18:19:42 -07:00
virt
virtio virtio_balloon: do not change memory amount visible via /proc/meminfo 2015-09-08 13:32:11 +03:00
vlynq
vme
w1 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-09-01 18:46:42 -07:00
watchdog - New Device Support 2015-09-04 11:35:03 -07:00
xen Merge branch 'akpm' (patches from Andrew) 2015-09-10 18:19:42 -07:00
zorro
Kconfig Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-09-03 16:27:01 -07:00
Makefile This is the bulk of pin control changes for the v4.3 development 2015-09-04 10:22:09 -07:00