Tomi Valkeinen 0f16aa0ae6 OMAP: DSS2: DSI: use a private workqueue ... Using the shared workqueue led to to a deadlock in the case where the display was unblanked via keyboard. What happens is something like this: - User presses a key context 1: - drivers/char/keyboard.c calls schedule_console_callback() - fb_unblank takes the console semaphore - dsi bus lock is taken, and frame transfer is started (dsi bus lock is left on) - Unblank code tries to set the panel backlight, which tries to take dsi bus lock, but is blocked while the frame transfer is going on context 2, shared workqueue, console_callback in drivers/char/vt.c: - Tries to take console semaphore - Blocks, as console semaphore is being held by context 1 - No other shared workqueue work can be run context 3, HW irq, caused by FRAMEDONE interrupt: - Interrupt handler schedules framedone-work in shared workqueue - Framedone-work is never ran, as the shared workqueue is blocked. This means that the unblank thread stays blocked, which means that context 2 stays blocked. While I think the real problem is in keyboard/virtual terminal code, using a private workqueue in the DSI driver is perhaps safer and more robust than using the shared one. The DSI works should not be delayed more than a millisecond or so, and even if the private workqueue gives us no hard promise of doing so, it's still safer bet than the shared workqueue. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>		2010-08-03 15:18:46 +03:00
..
accessibility
acpi	Merge branch 'bugzilla-16396' into release	2010-07-24 23:26:22 -04:00
amba
ata	ata_generic: implement ATA_GEN_* flags and force enable DMA on MBP 7,1	2010-07-01 15:34:48 -04:00
atm	Merge remote branch 'origin' into secretlab/next-devicetree	2010-05-22 00:36:56 -06:00
auxdisplay	auxdisplay: section cleanup in cfag12864bfb driver	2010-05-25 08:07:09 -07:00
base	Driver-core: Always create class directories for classses that support namespaces.	2010-07-26 08:05:31 -07:00
block	cciss: set SCSI max cmd len to 16, as default is wrong	2010-06-15 08:12:34 +02:00
bluetooth	drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h	2010-07-01 21:28:14 -07:00
cdrom
char	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel	2010-07-26 13:04:25 -07:00
clocksource	Andres has moved	2010-07-20 16:25:41 -07:00
connector
cpufreq	[CPUFREQ] fix memory leak in cpufreq_add_dev	2010-07-26 15:25:33 -04:00
cpuidle	sched: Cure nr_iowait_cpu() users	2010-07-01 09:39:48 +02:00
crypto	crypto: talitos - fix bug in sg_copy_end_to_buffer	2010-07-19 14:11:24 +08:00
dca
dio
dma	of/dma: fix build breakage in ppc4xx adma driver	2010-07-02 15:46:17 -06:00
edac	edac: mpc85xx: fix coldplug/hotplug module autoloading	2010-07-27 14:32:06 -07:00
eisa
firewire	firewire: core: check for 1394a compliant IRM, fix inaccessibility of Sony camcorder	2010-06-02 19:48:13 +02:00
firmware	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
gpio	gpio: fix spurious printk when freeing a gpio	2010-07-27 14:32:07 -07:00
gpu	drm/edid: Fix the HDTV hack sync adjustment	2010-07-29 16:14:43 +10:00
hid	HID: Send Report ID when numbered reports are sent over the control endpoint.	2010-07-11 23:13:15 +02:00
hwmon	hwmon: (coretemp) Properly label the sensors	2010-07-09 16:22:51 +02:00
i2c	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2010-07-11 13:35:34 -07:00
ide	powerpc/macio: Fix probing of macio devices by using the right of match table	2010-06-02 17:50:38 +10:00
idle	intel_idle: native hardware cpuidle driver for latest Intel processors	2010-05-28 14:26:20 -04:00
ieee1394	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2010-05-27 10:22:06 -07:00
ieee802154
infiniband	IB/qib: Use request_firmware() to load SD7220 firmware	2010-07-08 13:27:05 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-07-22 11:46:15 -07:00
isdn	ISDN: hysdn, fix potential NULL dereference	2010-06-26 22:12:02 -07:00
leds	i2c: Remove all i2c_set_clientdata(client, NULL) in drivers	2010-06-03 11:33:58 +02:00
lguest
macintosh	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2010-06-03 15:46:37 -07:00
mca
md	md/raid5: don't include 'spare' drives when reshaping to fewer devices.	2010-06-24 13:36:04 +10:00
media	V4L/DVB: v4l: mem2mem_testdev: fix g_fmt NULL pointer dereference	2010-07-08 16:50:24 -03:00
memstick
message	drivers/message/i2o/i2o_config.c: use memdup_user	2010-05-27 09:12:41 -07:00
mfd	i2c: Remove all i2c_set_clientdata(client, NULL) in drivers	2010-06-03 11:33:58 +02:00
misc	Andres has moved	2010-07-20 16:25:41 -07:00
mmc	ARM: Fix Versatile/Realview/VExpress MMC card detection sense	2010-07-30 23:16:32 +01:00
mtd	Merge git://git.infradead.org/~dwmw2/mtd-2.6.35	2010-06-07 17:10:06 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-07-27 09:21:00 -07:00
nubus
of	Merge remote branch 'origin' into secretlab/next-devicetree	2010-05-22 00:36:56 -06:00
oprofile
parisc
parport	m68k: amiga - Parallel port platform device conversion	2010-05-26 19:51:09 +02:00
pci	PCI: fall back to original BIOS BAR addresses	2010-07-16 11:39:48 -07:00
pcmcia	Merge master.kernel.org:/home/rmk/linux-2.6-arm	2010-07-26 08:20:38 -07:00
platform	intel_scu_ipc: Oops/crash fixes	2010-07-19 13:17:37 -07:00
pnp
power	Merge git://git.infradead.org/users/cbou/battery-2.6.35	2010-07-27 09:22:55 -07:00
pps
ps3
rapidio	rapidio: fix new kernel-doc warnings	2010-05-30 09:02:47 -07:00
regulator	regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register	2010-07-28 15:09:26 +01:00
rtc	drivers/rtc/rtc-rx8581.c: fix setdatetime	2010-07-27 14:32:06 -07:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6	2010-07-28 20:00:42 -07:00
sbus	drivers/sbus: Remove unnecessary casts of private_data	2010-07-12 21:16:04 -07:00
scsi	[SCSI] ibmvscsi: Fix oops when an interrupt is pending during probe	2010-07-27 11:53:23 -05:00
serial	serial: fix rs485 for atmel_serial on avr32	2010-07-26 11:59:31 -07:00
sfi	SFI: do not return freed pointer	2010-06-01 12:04:35 -04:00
sh	sh: Make intc messages consistent via pr_fmt.	2010-06-02 18:10:00 +09:00
sn
spi	powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)	2010-07-11 11:03:22 -05:00
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/staging-2.6	2010-06-30 15:45:59 -07:00
tc
telephony	drivers/telephony/ixj.c: use memdup_user	2010-05-27 09:12:42 -07:00
thermal
uio
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2010-07-26 13:06:39 -07:00
uwb
vhost	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-07-20 16:26:42 -07:00
video	OMAP: DSS2: DSI: use a private workqueue	2010-08-03 15:18:46 +03:00
virtio	virtio: fix oops on OOM	2010-07-26 08:05:31 -07:00
vlynq
w1	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
watchdog	watchdog: at32ap700x_wdt: register misc device last in probe() function	2010-06-17 09:56:57 +00:00
xen	xen: avoid allocation causing potential swap activity on the resume path	2010-06-03 09:34:45 +01:00
zorro	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
Kconfig
Makefile	intel_idle: native hardware cpuidle driver for latest Intel processors	2010-05-28 14:26:20 -04:00