Chris Wilson 14667a4bde drm/i915: Finish any pending operations on the framebuffer before disabling ... Similar to the case where we are changing from one framebuffer to another, we need to be sure that there are no pending WAIT_FOR_EVENTs on the pipe for the current framebuffer before switching. If we disable the pipe, and then try to execute a WAIT_FOR_EVENT it will block indefinitely and cause a GPU hang. We attempted to fix this in commit 85345517fe (drm/i915: Retire any pending operations on the old scanout when switching) for the case of mode switching, but this leaves the condition where we are switching off the pipe vulnerable. There still remains the race condition were a display may be unplugged, switched off by the core, a uevent sent to notify the DDX and the DDX may issue a WAIT_FOR_EVENT before it processes the uevent. This window does not exist if the pipe is only switched off in response to the uevent. Time to make sure that is so... Reported-by: Francis Leblanc <Francis.Leblanc-Lebeau@verint.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36515 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45413 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com> [danvet: fixup spelling in comment, noticed by Eugeni.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2012-04-09 21:53:30 +02:00
..
accessibility	vt:tackle kbd_table	2012-03-08 10:50:35 -08:00
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-04-06 19:56:04 -07:00
amba
ata	1) AHCI regression fix. A recent "make driver conform to spec" change	2012-03-22 20:22:30 -07:00
atm	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
auxdisplay
base	regmap: A couple of small fixes for 3.4	2012-04-07 09:56:00 -07:00
bcma	bcma: silence PMU warning for BCM4331	2012-03-07 13:56:37 -05:00
block	Two fixes for regressions:	2012-04-06 17:54:53 -07:00
bluetooth	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
cdrom	powerpc: Remove some of the legacy iSeries specific device drivers	2012-03-16 09:28:05 +11:00
char	Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2012-04-06 17:56:20 -07:00
clk	clk: make CONFIG_COMMON_CLK invisible	2012-03-19 09:37:11 +00:00
clocksource	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2012-03-29 16:53:48 -07:00
connector
cpufreq	ARM: SoC fixes for 3.4-rc2	2012-04-05 22:13:39 -07:00
cpuidle	Merge branches 'idle-fix' and 'misc' into release	2012-04-06 21:48:59 -04:00
crypto	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2012-03-22 18:15:32 -07:00
dca
devfreq	ARM: global cleanups	2012-03-27 16:03:32 -07:00
dio
dma	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
edac	Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2012-04-06 17:56:20 -07:00
eisa
firewire	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
firmware
gpio	gpio: tegra: Iterate over the correct number of banks	2012-04-04 13:13:18 -06:00
gpu	drm/i915: Finish any pending operations on the framebuffer before disabling	2012-04-09 21:53:30 +02:00
hid	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
hsi
hv	Tools: hv: Support enumeration from all the pools	2012-03-16 13:36:04 -07:00
hwmon	hwmon: (ad7314) Adds missing spi_dev initialization	2012-04-03 17:08:28 -07:00
hwspinlock
i2c	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
ide	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
idle	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
ieee802154
infiniband	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2012-03-29 23:17:44 -07:00
iommu	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-04-02 17:53:39 -07:00
leds	MFD changes for 3.4	2012-03-28 13:56:35 -07:00
lguest
macintosh	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
mca
md	md/raid1,raid10: don't compare excess byte during consistency check.	2012-04-03 15:39:23 +10:00
media	ARM: cleanups of io includes	2012-03-29 18:02:10 -07:00
memstick	memstick: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:19 +08:00
message	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
mfd	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
misc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
mmc	mmc: use really long write timeout to deal with crappy cards	2012-04-05 20:32:34 -04:00
mtd	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
net	Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2012-04-06 17:56:20 -07:00
nfc
nubus	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
of	GPIO changes for v3.4	2012-03-28 14:08:46 -07:00
oprofile	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
parisc	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
parport
pci	Two fixes for regressions:	2012-04-06 17:54:53 -07:00
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia	2012-03-29 16:00:48 -07:00
pinctrl	pinctrl: support pinconfig on the U300	2012-03-12 22:49:03 +01:00
platform	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-03-30 16:45:39 -07:00
pnp	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-03-30 16:45:39 -07:00
power	Various small bugfixes and enhancements, plus two new drivers:	2012-03-30 16:09:02 -07:00
pps
ps3
ptp	phc: Update author's email address.	2012-03-17 01:41:43 -07:00
rapidio	rapidio/tsi721: fix bug in register offset definitions	2012-03-15 17:03:03 -07:00
regulator	regulator: Fixes for -rc1	2012-04-04 10:09:30 -07:00
remoteproc	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
rpmsg
rtc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
s390	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
sbus	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
scsi	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
sfi
sh	SuperH updates for 3.4 merge window	2012-03-30 00:09:17 -07:00
sn
spi	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
ssb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2012-03-20 21:04:47 -07:00
staging	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
target	tcm_fc: Do not free tpg structure during wq allocation failure	2012-04-06 18:57:05 -07:00
tc
thermal	thermal: Fix for setting the thermal zone mode to enable/disable	2012-03-22 01:10:18 -04:00
tty	SuperH updates for 3.4-rc1	2012-04-07 09:52:46 -07:00
uio
usb	ARM: SoC fixes for 3.4-rc2	2012-04-05 22:13:39 -07:00
uwb	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
vhost	Merge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost	2012-03-23 14:46:48 -04:00
video	ARM: SoC fixes for 3.4-rc2	2012-04-05 22:13:39 -07:00
virt
virtio	virtio-pci: switch to PM ops macro to initialise PM functions	2012-03-31 08:09:51 +05:30
vlynq
w1	DS2781 Maxim Stand-Alone Fuel Gauge battery and w1 slave drivers	2012-03-08 11:15:33 -08:00
watchdog	ARM: cleanups of io includes	2012-03-29 18:02:10 -07:00
xen	Two fixes for regressions:	2012-04-06 17:54:53 -07:00
zorro
Kconfig	Merge branch 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsi	2012-04-02 09:50:40 -07:00
Makefile	Merge branch 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsi	2012-04-02 09:50:40 -07:00