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76a029fbfb
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Juuso Oikarinen 76a029fbfb wl1271: Fix scan race condition 
In the scan state machine, the wl1271_mutex is unlocked first then relocked,
and then the scan state variables are modified.

This makes it possible for ieee80211_scan_complete to be called twice in some
scenarios, as the scan completion event from the firmware may be processed
while the mutex is unlocked.

To fix the issue, move the ieee80211_scan_complete call last in the function.
This is generally safer, but there still may be issues is functions calling
the scan state machine rely on states checked before the unlocking of the
global mutex.

(forward ported from 2.6.32 -- this is not strictly needed anymore, because
the mutex doesn't need to be unlocked anymore, but I'm applying this change
anyway, so that the call to ieee80211_scan_complete is in the same place)

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Saravanan Dhanabal <ext-saravanan.dhanabal@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
2010-09-28 12:15:05 +03:00
..
accessibility
acpi acpi ec_sys: Be more cautious about ec write access 2010-08-03 09:49:13 -04:00
amba ARM: AMBA: Add pclk support to AMBA bus infrastructure 2010-07-31 13:07:27 +01:00
ata
atm solos-pci: Fix race condition in tasklet RX handling 2010-08-07 23:02:59 -07:00
auxdisplay
base Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-08-04 11:47:58 -07:00
block Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
bluetooth Bluetooth: Fix kfree() => kfree_skb() in hci_ath.c 2010-07-27 15:27:45 -07:00
cdrom
char ppp: make channel_ops const 2010-08-04 21:53:17 -07:00
clocksource Andres has moved 2010-07-20 16:25:41 -07:00
connector
cpufreq [CPUFREQ] fix brace coding style issue. 2010-08-03 13:47:05 -04:00
cpuidle [CPUFREQ] x86 cpufreq: Make trace_power_frequency cpufreq driver independent 2010-08-03 13:47:05 -04:00
crypto Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
dca
dio
dma Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
edac amd64_edac: Minor formatting fix 2010-08-04 11:16:01 +02:00
eisa
firewire
firmware Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6 2010-08-04 11:25:58 -07:00
gpio Merge branch 'misc' into devel 2010-07-31 14:20:02 +01:00
gpu Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2010-08-04 15:23:49 -07:00
hwmon
i2c
ide
idle Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2010-08-04 11:13:36 -07:00
ieee1394
ieee802154
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
input Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
isdn isdn: gigaset: use after free 2010-08-07 23:04:12 -07:00
leds leds: add LED driver for Network Space v2 LEDs 2010-07-16 22:02:00 -04:00
lguest
macintosh
mca
md
media Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
memstick
message Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
mfd
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-08-04 15:15:15 -07:00
mmc Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-08-03 14:31:24 -07:00
mtd Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
net wl1271: Fix scan race condition 2010-09-28 12:15:05 +03:00
nubus
of
oprofile
parisc Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
parport
pci PM: Make it possible to avoid races between wakeup and system sleep 2010-07-19 01:58:48 +02:00
pcmcia Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
platform ips driver: make it less chatty 2010-08-03 11:55:15 -04:00
pnp PNPACPI: Add support for remote wakeup 2010-07-19 01:58:48 +02:00
power Merge git://git.infradead.org/users/cbou/battery-2.6.35 2010-07-27 09:22:55 -07:00
pps
ps3
rapidio
regulator regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register 2010-07-28 15:09:26 +01:00
rtc Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2010-08-04 15:15:15 -07:00
sbus
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
serial Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
sfi
sh
sn
spi
ssb
staging Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
tc
telephony
thermal
uio
usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
uwb
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-08-04 11:47:58 -07:00
video Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-08-04 15:31:02 -07:00
virtio virtio: fix oops on OOM 2010-07-26 08:05:31 -07:00
vlynq
w1
watchdog
xen
zorro
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