android_kernel_motorola_sm6225/drivers
Neil Horman aa25ab7d94 3c59x: Fix deadlock between boomerang_interrupt and boomerang_start_tx
If netconsole is in use, there is a possibility for deadlock in 3c59x between
boomerang_interrupt and boomerang_start_xmit.  Both routines take the vp->lock,
and if netconsole is in use, a pr_* call from the boomerang_interrupt routine
will result in the netconsole code attempting to trnasmit an skb, which can try
to take the same spin lock, resulting in deadlock.

The fix is pretty straightforward.  This patch allocats a bit in the 3c59x
private structure to indicate that its handling an interrupt.  If we get into
the transmit routine and that bit is set, we can be sure that we have recursed
and will deadlock if we continue, so instead we just return NETDEV_TX_BUSY, so
the stack requeues the skb to try again later.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-24 01:47:40 -07:00
..
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
cdrom
char ppp: make channel_ops const 2010-08-04 21:53:17 -07:00
clocksource
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/avm: fix build when PCMCIA is not enabled 2010-08-22 21:37:33 -07:00
leds
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 3c59x: Fix deadlock between boomerang_interrupt and boomerang_start_tx 2010-08-24 01:47:40 -07:00
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
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
power
pps
ps3
rapidio
regulator
rtc Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
s390 ctcm: rename READ/WRITE defines to avoid redefinitions 2010-08-12 16:04:23 -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
vlynq
w1
watchdog
xen
zorro
Kconfig
Makefile