linux/drivers
Vasanthakumar Thiagarajan 6c3118e230 ath9k: Fix bug in starting ani
There are few places where ANI is started without checking
if it is right to start. This might lead to a case where ani
timer would be left undeleted and cause improper memory acccess
during module unload. This bug is clearly exposed with
paprd support where the driver detects tx hang and does a
chip reset. During this reset ani is (re)started without checking
if it needs to be started. This would leave a timer scheduled
even after all the resources are freed and cause a panic.

This patch introduces a bit in sc_flags to indicate if ani
needs to be started in sw_scan_start() and ath_reset().
This would fix the following panic. This issue is easily seen
with ar9003 + paprd.

 BUG: unable to handle kernel paging request at 0000000000003f38
[<ffffffff81075391>] ? __queue_work+0x41/0x50
[<ffffffff8106afaa>] run_timer_softirq+0x17a/0x370
[<ffffffff81088be8>] ? tick_dev_program_event+0x48/0x110
[<ffffffff81061f69>] __do_softirq+0xb9/0x1f0
[<ffffffff810ba060>] ? handle_IRQ_event+0x50/0x160
[<ffffffff8100af5c>] call_softirq+0x1c/0x30
[<ffffffff8100c9f5>] do_softirq+0x65/0xa0
[<ffffffff81061e25>] irq_exit+0x85/0x90
[<ffffffff8155e095>] do_IRQ+0x75/0xf0
[<ffffffff815570d3>] ret_from_intr+0x0/0x11
<EOI>
[<ffffffff812fd67b>] ? acpi_idle_enter_simple+0xe4/0x119
[<ffffffff812fd674>] ? acpi_idle_enter_simple+0xdd/0x119
[<ffffffff81441c87>] cpuidle_idle_call+0xa7/0x140
[<ffffffff81008da3>] cpu_idle+0xb3/0x110
[<ffffffff81550722>] start_secondary+0x1ee/0x1f5

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-23 15:28:42 -04:00
..
accessibility
acpi Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-05-20 09:45:38 -07:00
amba
ata Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 2010-05-20 09:27:37 -07:00
atm atm: select FW_LOADER in Kconfig for solos-pci 2010-05-17 17:44:36 -07:00
auxdisplay
base Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2010-05-20 09:03:55 -07:00
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
cdrom
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-05-20 10:33:06 -07:00
clocksource Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-19 17:10:57 -07:00
connector
cpufreq Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:49:13 -07:00
cpuidle PM QOS update 2010-05-10 23:08:19 +02:00
crypto
dca
dio
dma Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2010-05-19 11:36:03 -07:00
edac
eisa
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
firmware
gpio Merge branch 'topic/asoc' into for-linus 2010-05-20 12:00:43 +02:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
hid USB: rename usb_buffer_alloc() and usb_buffer_free() users 2010-05-20 13:21:38 -07:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2010-05-11 17:38:04 -07:00
i2c Merge branch 'for-linus/i2c-2635' of git://git.fluff.org/bjdooks/linux 2010-05-20 09:41:17 -07:00
ide pcmcia: dev_node removal (drivers with updated printk call) 2010-05-10 10:23:15 +02:00
idle
ieee1394
ieee802154
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
input Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-05-20 21:26:12 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
leds
lguest
macintosh
mca
md
media Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-05-20 21:26:12 -07:00
memstick
message
mfd Merge branch 'topic/asoc' into for-linus 2010-05-20 12:00:43 +02:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
mmc Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-19 11:37:22 -07:00
mtd pcmcia: dev_node removal (write-only drivers) 2010-05-10 10:23:14 +02:00
net ath9k: Fix bug in starting ani 2010-06-23 15:28:42 -04:00
nubus
of
oprofile
parisc
parport pcmcia: dev_node removal (write-only drivers) 2010-05-10 10:23:14 +02:00
pci Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
pcmcia Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-05-20 09:09:46 -07:00
platform
pnp
power
pps
ps3
rapidio
regulator Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
rtc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
serial Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2010-05-20 09:09:46 -07:00
sfi
sh sh: simplify WARN usage in SH clock driver 2010-05-13 17:43:11 +09:00
sn
spi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
ssb ssb: fix NULL ptr deref when pcihost_wrapper is used 2010-05-28 13:57:01 -04:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-05-20 21:26:12 -07:00
tc
telephony pcmcia: dev_node removal (write-only drivers) 2010-05-10 10:23:14 +02:00
thermal
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2010-05-20 21:26:12 -07:00
uwb
vhost Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-05-16 22:26:58 -07:00
video Merge branch 'viafb-next' of git://git.lwn.net/linux-2.6 2010-05-20 13:34:17 -07:00
virtio
vlynq vlynq: make whole Kconfig-menu dependant on architecture 2010-05-14 16:59:54 +02:00
w1
watchdog USB: rename usb_buffer_alloc() and usb_buffer_free() users 2010-05-20 13:21:38 -07:00
xen
zorro m68k: amiga - Zorro host bridge platform device conversion 2010-05-17 21:37:42 +02:00
Kconfig
Makefile virtio: initialize earlier 2010-05-07 14:01:17 -07:00