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7f58aabc36
linux/drivers
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Chris Wilson 7f58aabc36 drm/i915: Reset GMBUS controller after NAK 
Once a NAK has been asserted by the slave, we need to reset the GMBUS
controller in order to continue. This is done by asserting the Software
Clear Interrupt bit and then clearing it again to restore operations.

If we don't clear the NAK, then all future GMBUS xfers will fail,
including DDC probes and EDID retrieval.

v2: Add some comments as suggested by Keith Packard.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35781
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: "Mengmeng Meng" <mengmeng.meng@intel.com>
2011-03-31 09:37:01 +01:00
..
accessibility
acpi ACPI / ACPICA: Implicit notify for multiple devices 2011-02-24 19:59:21 +01:00
amba
ata libata: set queue DMA alignment to sector size for ATAPI too 2011-01-28 03:16:20 -05:00
atm ATM, Solos PCI ADSL2+: Don't deref NULL pointer if net_ratelimit() and alloc_skb() interact badly. 2011-02-13 16:55:46 -08:00
auxdisplay
base PM / Runtime: Don't enable interrupts while running in_interrupt 2011-01-25 20:50:07 +01:00
block block: kill loop_mutex 2011-03-03 11:53:25 -05:00
bluetooth Revert "Bluetooth: Enable USB autosuspend by default on btusb" 2011-02-23 19:42:03 -08:00
cdrom cdrom: support devices that have check_events but not media_changed 2011-02-09 14:22:37 +01:00
char ipmi: Fix IPMI errors due to timing problems 2011-03-10 13:21:16 -08:00
clk
clocksource drivers/clocksource/tcb_clksrc.c: fix init sequence 2011-01-26 10:50:04 +10:00
connector
cpufreq [CPUFREQ] fix BUG on cpufreq policy init failure 2011-03-01 18:49:44 -05:00
cpuidle Merge branch 'cpuidle-perf-events' into idle-test 2011-01-12 18:06:19 -05:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2011-01-13 10:25:58 -08:00
dca dca: remove unneeded NULL check 2011-01-13 08:03:09 -08:00
dio
dma Merge branch 'imx' into dmaengine-fixes 2011-02-14 02:40:46 -08:00
edac amd64_edac: Fix DIMMs per DCTs output 2011-02-10 14:41:49 +01:00
eisa
firewire Merge branches 'fixes' and 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-01-21 13:34:39 -08:00
firmware x86, dmi, debug: Log board name (when present) in dmesg/oops output 2011-02-15 04:20:57 +01:00
gpio drivers/gpio/pca953x.c: add a mutex to fix race condition 2011-02-11 16:12:20 -08:00
gpu drm/i915: Reset GMBUS controller after NAK 2011-03-31 09:37:01 +01:00
hid kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
hwmon hwmon: (adt7411) add MODULE_DEVICE_TABLE 2011-02-26 08:59:32 -08:00
i2c i2c-eg20t: include slab.h for memory allocations 2011-03-08 23:13:30 +00:00
ide kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
idle intel_idle: disable Atom/Lincroft HW C-state auto-demotion 2011-02-17 17:08:48 -05:00
ieee802154
infiniband Merge branches 'nes' and 'qib' into for-next 2011-02-17 14:04:59 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-02-23 14:44:25 -08:00
isdn drivers:isdn:istream.c Fix typo pice to piece 2011-02-28 12:07:32 -08:00
leds leds: leds-pwm: return proper error if pwm_request failed 2011-01-26 10:49:58 +10:00
lguest lguest: compile fixes 2011-01-20 21:37:29 +10:30
macintosh powerpc/macintosh: Fix wrong test in fan_{read,write}_reg() 2011-01-21 14:08:34 +11:00
mca
md md: Fix - again - partition detection when array becomes active 2011-02-24 17:26:41 +11:00
media Merge branch 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-03-10 13:22:10 -08:00
memstick workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable' 2011-02-16 17:48:59 +01:00
message [SCSI] mptfusion: Bump version 03.04.18 2011-02-12 12:51:21 -06:00
mfd mfd: Avoid tps6586x burst writes 2011-03-02 10:57:50 +01:00
misc drivers/misc/bmp085.c: add MODULE_DEVICE_TABLE 2011-03-04 17:53:38 -08:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc 2011-03-09 14:00:44 -08:00
mtd workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable' 2011-02-16 17:48:59 +01:00
net r8169: disable ASPM 2011-03-03 11:55:43 -08:00
nfc drivers/nfc/pn544.c: add missing regulator 2011-02-25 15:07:36 -08:00
nubus
of of/promtree: allow DT device matching by fixing 'name' brokenness (v5) 2011-03-02 13:45:19 -07:00
oprofile
parisc
parport parport: make lockdep happy with waitlist_lock 2011-01-26 10:49:59 +10:00
pci pci: use security_capable() when checking capablities during config space read 2011-02-15 19:06:31 +11:00
pcmcia Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-03-07 20:45:42 -08:00
platform dell-laptop: Toggle the unsupported hardware killswitch 2011-02-21 17:06:21 -05:00
pnp Merge branch 'pnp' into release 2011-01-12 04:59:44 -05:00
power Merge git://git.infradead.org/battery-2.6 2011-01-14 09:25:59 -08:00
pps pps: make pps_gen_parport depend on BROKEN 2011-03-04 17:53:38 -08:00
ps3
rapidio rapidio: fix sysfs config attribute to access 16MB of maint space 2011-02-25 15:07:37 -08:00
regulator regulator, mc13xxx: Remove pointless test for unsigned less than zero 2011-02-25 08:51:07 +00:00
rtc drivers/rtc/rtc-s3c.c: fix prototype for s3c_rtc_setaie() 2011-03-04 17:53:38 -08:00
s390 [S390] tape: deadlock on system work queue 2011-03-03 17:56:14 +01:00
sbus
scsi block: add @force_kblockd to __blk_run_queue() 2011-03-02 08:48:05 -05:00
sfi SFI: use ioremap_cache() instead of ioremap() 2011-01-11 23:27:25 -05:00
sh sh: update INTC to clear IRQ sense valid flag 2011-01-19 19:02:35 +09:00
sn
spi spi/pxa2xx pci: fix the release - remove race 2011-02-15 13:25:36 -07:00
ssb Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2011-02-08 12:03:54 -08:00
staging Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6 2011-02-10 12:19:23 -08:00
target [SCSI] target: fix use after free detected by SLUB poison 2011-02-12 12:32:41 -06:00
tc
telephony Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
thermal ACPI: Fix build for CONFIG_NET unset 2011-02-28 18:00:31 -08:00
tty fmvj18x_cs: add new id 2011-02-28 12:06:20 -08:00
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2011-03-03 15:43:15 -08:00
uwb
vhost vhost: rcu annotation fixup 2011-02-01 16:48:46 +02:00
video drivers/video/backlight/ltv350qv.c: fix a memory leak 2011-03-04 17:53:38 -08:00
virtio virtio: remove virtio-pci root device 2011-01-20 21:37:30 +10:30
vlynq
w1 drivers/w1/masters/omap_hdq.c: add missing clk_put 2011-02-11 16:12:20 -08:00
watchdog watchdog: sbc_fitpc2_wdt, fix crash on systems without DMI_BOARD_NAME 2011-03-09 21:33:37 +00:00
xen xen: suspend and resume system devices when running PVHVM 2011-02-17 10:31:20 +00:00
zorro
Kconfig [SCSI] target: Add LIO target core v4.0.0-rc6 2011-01-14 10:12:29 -06:00
Makefile Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 2011-01-20 16:39:23 -08:00