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Zou Nan hai cae5852dca drm/i915/ringbuffer: set FORCE_WAKE bit before reading ring register 
Before reading ring register, set FORCE_WAKE bit to prevent GT core
power down to low power state, otherwise we may read stale values.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
[ickle: added a udelay which seemed to do the trick on my SNB]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-11 17:45:54 +00:00
..
accessibility
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acpi
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2010-10-26 17:28:37 -07:00
amba
ARM: 6368/1: move the PrimeCell IDs to use macros
2010-10-08 10:02:27 +01:00
ata
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
atm
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
auxdisplay
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base
Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
2010-10-26 17:31:05 -07:00
block
mm: strictly nested kmap_atomic()
2010-10-26 16:52:08 -07:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
2010-10-23 11:47:02 -07:00
cdrom
block: autoconvert trivial BKL users to private mutex
2010-10-05 15:01:10 +02:00
char
agp/intel: fix cache control for sandybridge
2010-11-04 09:39:50 +00:00
clocksource
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connector
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cpufreq
[CPUFREQ] add sampling_down_factor tunable to improve ondemand performance
2010-10-22 11:44:47 -04:00
cpuidle
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crypto
replace nested max/min macros with {max,min}3 macro
2010-10-26 16:52:12 -07:00
dca
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dio
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dma
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
edac
Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/i7core
2010-10-26 10:13:48 -07:00
eisa
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firewire
Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
2010-10-25 08:05:29 -07:00
firmware
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
gpio
pca953x: pca953x driver fixes for x86 mrst
2010-10-26 16:52:15 -07:00
gpu
drm/i915/ringbuffer: set FORCE_WAKE bit before reading ring register
2010-11-11 17:45:54 +00:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2010-10-25 07:59:01 -07:00
hwmon
hwmon: lis3: Release resources in case of failure
2010-10-25 14:44:59 -07:00
i2c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2010-10-25 07:51:49 -07:00
ide
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
idle
Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6
2010-10-26 17:28:07 -07:00
ieee802154
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infiniband
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-10-26 17:58:44 -07:00
input
Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
2010-10-25 10:59:31 -07:00
isdn
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
leds
leds: add LED driver for Big Network series LEDs
2010-10-07 14:02:12 -04:00
lguest
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
macintosh
replace nested max/min macros with {max,min}3 macro
2010-10-26 16:52:12 -07:00
mca
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md
workqueues: s/ON_STACK/ONSTACK/
2010-10-26 16:52:14 -07:00
media
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2010-10-25 07:59:01 -07:00
memstick
block: autoconvert trivial BKL users to private mutex
2010-10-05 15:01:10 +02:00
message
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
2010-10-22 17:34:15 -07:00
mfd
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
2010-10-25 08:32:05 -07:00
misc
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-10-26 17:58:44 -07:00
mmc
at91/atmel-mci: inclusion of sd/mmc driver in at91sam9g45 chip and board
2010-10-26 11:32:49 +02:00
mtd
Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
2010-10-25 10:59:31 -07:00
net
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
2010-10-26 17:54:22 -07:00
nubus
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of
of/mips: Cleanup some include directives/files.
2010-10-21 11:10:11 -06:00
oprofile
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
parisc
Update broken web addresses in the kernel.
2010-10-18 11:03:14 +02:00
parport
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
pci
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
pcmcia
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
platform
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
2010-10-25 08:28:13 -07:00
pnp
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
2010-10-26 17:28:37 -07:00
power
Merge git://git.infradead.org/battery-2.6
2010-10-26 10:14:23 -07:00
pps
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ps3
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rapidio
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regulator
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
2010-10-07 13:44:30 -07:00
rtc
AT91: rtc: enable built-in RTC in Kconfig for at91sam9g45 family
2010-10-26 11:32:49 +02:00
s390
[S390] cleanup facility list handling
2010-10-25 16:10:21 +02:00
sbus
Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
2010-10-25 08:19:14 -07:00
scsi
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
serial
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
2010-10-25 13:46:56 -07:00
sfi
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sh
sh: clkfwk: Shuffle around to match the intc split up.
2010-10-18 21:32:58 +09:00
sn
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spi
Merge branch 'for-next' of git://android.git.kernel.org/kernel/tegra
2010-10-25 18:42:06 -07:00
ssb
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staging
fs: add sync_inode_metadata
2010-10-25 21:18:19 -04:00
tc
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telephony
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
thermal
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uio
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
usb
fix braino in fs: do not assign default i_ino in new_inode
2010-10-26 20:25:45 -07:00
uwb
uwb: Remove the WLP subsystem and drivers
2010-10-25 14:03:45 +01:00
vhost
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
2010-10-23 11:47:02 -07:00
video
Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
2010-10-26 18:57:59 -07:00
virtio
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vlynq
MIPS: Add missing #inclusions of <linux/irq.h>
2010-10-07 14:08:54 +01:00
w1
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watchdog
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
2010-10-25 13:46:56 -07:00
xen
Merge branches 'upstream/xenfs' and 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
2010-10-26 18:20:19 -07:00
zorro
zorro: Fix device_register() error handling
2010-10-22 09:43:25 +02:00
Kconfig
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Makefile
Merge branch 'ieee1394-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
2010-10-25 08:05:29 -07:00