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12f55818ba
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Chris Wilson 12f55818ba drm/i915: Add comments to explain the BSD tail write workaround 
Having had to dive into the bspec to understand what each stage of the
workaround meant, and how that the ring broadcasting IDLE corresponded
with the GT powering down the ring (i.e. rc6) add comments to aide
the next reader.

And since the register "is used to control all aspects of PSMI and power
saving functions" that makes it quite interesting to inspect with
regards to RC6 hangs, so add it to the error-state.

v2: Rediscover the piece of magic, set the RNCID to 0 before waiting for
the ring to wake up.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-20 12:21:37 +02:00
..
accessibility
acpi Merge branches 'bugfix-battery', 'bugfix-misc', 'bugfix-rafael', 'bugfix-turbostat', 'bugfix-video' and 'workaround-pss' into release 2012-06-04 00:48:41 -04:00
amba arm-soc: driver specific updates 2012-05-26 12:22:27 -07:00
ata Viresh has moved 2012-06-20 14:39:36 -07:00
atm solos-pci: Fix DMA support 2012-05-24 16:22:53 -04:00
auxdisplay
base Driver core and printk fixes for 3.5-rc4 2012-06-20 15:14:28 -07:00
bcma bcma: fix null pointer in bcma_core_pci_irq_ctl 2012-06-08 13:47:07 -04:00
block mtip32xx: Changes to sysfs entries 2012-05-31 08:46:50 +02:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-24 11:54:29 -07:00
cdrom
char agp/intel-agp: remove snb+ host bridge pciids 2012-06-25 21:10:35 +02:00
clk Viresh has moved 2012-06-20 14:39:36 -07:00
clocksource clocksource: sh_tmu: Use clockevents_config_and_register(). 2012-06-11 17:10:16 +09:00
connector
cpufreq
cpuidle
crypto arm-soc: clock driver changes 2012-05-26 12:42:29 -07:00
dca
devfreq Power management updates for 3.5 2012-05-23 14:07:06 -07:00
dio
dma Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma 2012-06-20 22:12:52 -07:00
edac edac: Do alignment logic properly in edac_align_ptr() 2012-06-11 12:43:16 -03:00
eisa
extcon extcon: max8997: Add missing kfree for info->edev in max8997_muic_remove() 2012-06-18 16:30:42 -07:00
firewire IEEE 1394 (FireWire) subsystem updates post v3.4: 2012-05-24 12:57:47 -07:00
firmware
gpio gpio/samsung: fix the typo 'exynos5_xxx' instead of 'exonys5_xxx' 2012-06-03 21:21:01 -07:00
gpu drm/i915: Add comments to explain the BSD tail write workaround 2012-07-20 12:21:37 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
hsi
hv Driver core pull for 3.5-rc1 2012-05-22 16:02:13 -07:00
hwmon hwmon fixes for 3.5-rc4 2012-06-21 13:40:40 -07:00
hwspinlock
i2c i2c: Add generic I2C multiplexer using pinctrl API 2012-06-04 16:49:43 +02:00
ide drivers/ide/ide-cs.c: adjust suspicious bit operation 2012-06-12 15:51:41 -07:00
idle
ieee802154 drivers/ieee802154: IEEE 802.15.4 loopback driver 2012-05-16 15:17:08 -04:00
iio iio: drop wrong reference from Kconfig 2012-06-14 17:28:46 -07:00
infiniband Merge branches 'cma' and 'ocrdma' into for-linus 2012-06-24 04:59:59 -07:00
input i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING 2012-05-30 10:55:34 +02:00
iommu iommu/amd: Fix deadlock in ppr-handling error path 2012-06-04 12:47:44 +02:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-24 11:54:29 -07:00
leds leds: Make LEDS_ASIC3 and LEDS_RENESAS_TPU depend on LEDS_CLASS=y 2012-06-12 10:56:25 +08:00
lguest
macintosh
md md: 2 fixes for 3.5-rc 2012-06-06 09:49:28 -07:00
media media: pms.c needs linux/slab.h 2012-06-20 22:10:08 -07:00
memory
memstick
message Merge branch 'akpm' (Andrew's patch-bomb) 2012-05-31 18:10:18 -07:00
mfd Viresh has moved 2012-06-20 14:39:36 -07:00
misc misc: mei: set WDIOF_ALARMONLY on mei watchdog 2012-06-13 15:34:31 -07:00
mmc Merge branch 'akpm' (Andrew's patch-bomb) 2012-06-20 14:41:57 -07:00
mtd kmsg - kmsg_dump() use iterator to receive log buffer content 2012-06-15 14:53:59 -07:00
net Fix typo in printed messages 2012-06-24 11:03:52 -07:00
nfc NFC: potential integer overflow problem in check_crc() 2012-05-25 11:16:16 -04:00
nubus
of Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2012-05-29 18:27:19 -07:00
oprofile
parisc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
parport Driver core pull for 3.5-rc1 2012-05-22 16:02:13 -07:00
pci USB: add NO_D3_DURING_SLEEP flag and revert 151b612847 2012-06-13 13:11:39 -07:00
pcmcia
pinctrl Merge branch 'akpm' (Andrew's patch-bomb) 2012-06-20 14:41:57 -07:00
platform drivers/platform/x86/acerhdf.c: correct Boris' mail address 2012-06-07 14:43:55 -07:00
pnp
power A bunch of fixes for v3.5, nothing extraordinary. 2012-05-31 12:10:15 -07:00
pps
ps3
ptp Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
rapidio rapidio/tsi721: add DMA engine support 2012-05-31 17:49:31 -07:00
regulator regulator: Change db8500-prcmu match names to reflect Device Tree 2012-06-17 18:27:49 +01:00
remoteproc remoteproc/omap: fix dev_err typo 2012-06-17 10:31:03 +03:00
rpmsg
rtc Merge branches 'bugfix-battery', 'bugfix-misc', 'bugfix-rafael', 'bugfix-turbostat', 'bugfix-video' and 'workaround-pss' into release 2012-06-04 00:48:41 -04:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-05-31 10:51:10 -07:00
sbus
scsi SCSI fixes on 20120614 2012-06-15 17:39:32 -07:00
sfi
sh sh: intc: Kill off special reservation interface. 2012-05-22 19:07:55 +09:00
sn
spi SPI: fix over-eager devm_xxx() conversion 2012-06-18 11:27:04 +01:00
ssb ssb: add PCI IDs 0x4322 and 43222 2012-05-16 12:46:37 -04:00
staging drm: Make the .mode_fixup() operations mode argument a const pointer 2012-07-19 21:52:38 -04:00
target target: Return error to initiator if SET TARGET PORT GROUPS emulation fails 2012-06-12 20:12:25 -07:00
tc
thermal
tty Serial driver fixes for 3.5-rc4 2012-06-20 15:13:13 -07:00
uio
usb USB: fix gathering of interface associations 2012-06-14 17:13:34 -07:00
uwb
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
video fbdev fixes for 3.5 2012-06-16 16:59:05 -07:00
virt
virtio virtio-mmio: Devices parameter parsing 2012-05-22 12:16:15 +09:30
vlynq
vme
w1 arm-soc: clock driver changes 2012-05-26 12:42:29 -07:00
watchdog Viresh has moved 2012-06-20 14:39:36 -07:00
xen Five bug-fixes: 2012-06-15 17:17:15 -07:00
zorro
Kconfig Staging tree pull request for 3.5-rc1 2012-05-22 16:34:21 -07:00
Makefile arm-soc: driver specific updates 2012-05-26 12:22:27 -07:00