Robert Jarzmik 5e23e90f33 USB: pxa27x_udc: Fix deadlocks on request queueing ... As reported by Antonio, there are cases where the ep->lock can be taken twice, triggering a deadlock. The typical sequence is : irq_handler \ -> gadget.complete() \ -> pxa27x_udc.pxa_ep_queue() : ep->lock is taken \ -> gadget.complete() \ -> pxa27x_udc.pxa_ep_queue() : ep->lock is taken ==> *deadlock* The patch fixes this by : - releasing the lock each time gadget.complete() is called - adding a check in handle_ep() to detect a recursive call, in which case the function becomes on no-op. The patch is still not good enough for ep0. For this unique endpoint, another well thought over patch will be needed. Reported-by: Antonio Ospite <ospite@studenti.unina.it> Tested-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2010-03-02 14:54:47 -08:00
..
accessibility
acpi	Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-03-01 10:36:22 -08:00
amba
ata	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev	2010-03-01 13:04:58 -08:00
atm
auxdisplay
base	PM: Allow device drivers to use dpm_wait()	2010-02-26 20:39:11 +01:00
block	Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block	2010-03-01 09:00:29 -08:00
bluetooth
cdrom
char	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-03-01 10:38:09 -08:00
clocksource	Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-03-01 08:48:25 -08:00
connector
cpufreq
cpuidle
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2010-02-26 16:50:02 -08:00
dca
dio
dma
edac
eisa
firewire
firmware	drivers/firmware/iscsi_ibft.c: remove NIPQUAD_FMT, use %pI4	2010-02-26 21:02:14 +00:00
gpio
gpu	Merge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-02-28 10:59:18 -08:00
hid	USB: Push BKL on open down into the drivers	2010-03-02 14:54:23 -08:00
hwmon
i2c	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
ide	Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-03-01 10:36:22 -08:00
idle
ieee1394
ieee802154
infiniband
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-03-01 10:38:09 -08:00
isdn
leds
lguest
macintosh	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-03-01 10:38:09 -08:00
mca
md
media	USB: Push BKL on open down into the drivers	2010-03-02 14:54:23 -08:00
memstick
message	Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block	2010-03-01 09:00:29 -08:00
mfd	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6	2010-03-01 08:58:44 -08:00
misc
mmc	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
mtd	MIPS: Alchemy: physmap-flash for all devboards	2010-02-27 12:52:59 +01:00
net	Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci	2010-03-01 13:05:40 -08:00
nubus
of
oprofile
parisc
parport
pci	Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-03-01 10:36:22 -08:00
pcmcia	Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus	2010-02-27 16:19:22 -08:00
platform	Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-03-01 10:36:22 -08:00
pnp
power
pps
ps3
rapidio
regulator
rtc	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
s390	Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block	2010-03-01 09:00:29 -08:00
sbus
scsi	Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block	2010-03-01 09:00:29 -08:00
serial	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
sfi
sh
sn
spi	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
ssb
staging	USB: BKL removal: frontier	2010-03-02 14:54:32 -08:00
tc
telephony
thermal
uio
usb	USB: pxa27x_udc: Fix deadlocks on request queueing	2010-03-02 14:54:47 -08:00
uwb
video	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k	2010-02-27 16:22:47 -08:00
virtio	virtio: fix out of range array access	2010-02-28 20:39:11 +02:00
vlynq
w1
watchdog	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2010-03-01 09:15:15 -08:00
xen
zorro
Kconfig
Makefile