leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
cb8ef723ab
linux/drivers
History
Imre Deak cb8ef723ab drm/i915/gen9_bc: Work around DMC bug zeroing power well requests 
A DMC bug on GEN9 big core machines fails to restore the driver's
request bits for the PW1 and MISC_IO power wells after a DC5/6
entry->exit sequence. As a consequence the driver's subsequent check for
the enabled status of these power wells will fail, as the check
considers the power wells being enabled only if both the status and
request bits are set. To work around this borrow the request bits from
BIOS's own request register in which DMC forces on the request bits when
exiting from DC5/6.

This fixes a problem reported by Ramalingam, where HDCP init failed,
since PW1 reported itself as being disabled, while in reality it was
enabled.

Reported-by: Ramalingam C <ramalingam.c@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181109145822.15446-1-imre.deak@intel.com
2018-11-14 13:45:15 +02:00
..
accessibility
acpi Merge branch 'acpi-bus' 2018-09-07 10:05:20 +02:00
amba
android android: binder: fix the race mmap and alloc_new_buf_locked 2018-09-12 09:18:29 +02:00
ata for-linus-20180920 2018-09-21 09:41:05 +02:00
atm
auxdisplay
base firmware: Fix security issue with request_firmware_into_buf() 2018-09-12 09:31:00 +02:00
bcma
block for-linus-20180929 2018-09-29 14:52:14 -07:00
bluetooth Bluetooth: hci_ldisc: Free rw_semaphore on close 2018-09-11 13:33:57 +02:00
bus Merge branch 'perm-fix' into omap-for-v4.19/fixes-v2 2018-08-28 09:58:03 -07:00
cdrom cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status 2018-08-29 08:09:20 -06:00
char A few fixes that came around or after the merge window, except 2018-09-12 19:33:56 -10:00
clk clk: x86: Stop marking clocks as CLK_IS_CRITICAL 2018-09-17 18:47:58 -07:00
clocksource clocksource/drivers/timer-atmel-pit: Properly handle error cases 2018-09-27 12:01:45 +02:00
connector
cpufreq cpufreq: qcom-kryo: Fix section annotations 2018-09-29 15:01:10 +02:00
cpuidle
crypto crypto: ccp - add timeout support in the SEV command 2018-09-13 13:27:43 +08:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
devfreq
dio
dma
dma-buf udmabuf: fix error code in map_udmabuf() 2018-09-14 11:44:59 +02:00
edac
eisa
extcon
firewire
firmware efi/libstub/arm: default EFI_ARMSTUB_DTB_LOADER to y 2018-09-12 16:41:41 +02:00
fmc
fpga fpga: dfl: fme: fix return value check in in pr_mgmt_init() 2018-09-12 09:31:00 +02:00
fsi
gnss
gpio gpio: Fix crash due to registration race 2018-08-31 11:30:45 +02:00
gpu drm/i915/gen9_bc: Work around DMC bug zeroing power well requests 2018-11-14 13:45:15 +02:00
hid HID: i2c-hid: Don't reset device upon system resume 2018-09-06 16:30:53 +02:00
hsi
hv vmbus: don't return values for uninitalized channels 2018-09-12 09:31:00 +02:00
hwmon Various bug fixes for nct6775 driver 2018-09-19 22:59:30 +02:00
hwspinlock
hwtracing intel_th: pci: Add Ice Lake PCH support 2018-09-18 16:08:38 +02:00
i2c i2c: xiic: Make the start and the byte count write atomic 2018-09-06 20:49:09 +02:00
ide
idle
iio First set of IIO fixes for the 4.19 cycle. 2018-09-09 09:33:29 +02:00
infiniband Second rc pull request 2018-09-27 21:53:55 +02:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-09-28 18:04:50 -07:00
iommu iommu/amd: Return devid as alias for ACPI HID devices 2018-09-26 09:41:11 +02:00
ipack
irqchip irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint 2018-09-06 20:31:59 +02:00
isdn
leds
lightnvm
macintosh
mailbox
mcb
md for-linus-20180929 2018-09-29 14:52:14 -07:00
media media: platform: fix cros-ec-cec build error 2018-09-17 14:32:29 -04:00
memory memory: ti-aemif: fix a potential NULL-pointer dereference 2018-09-06 10:04:07 -07:00
memstick
message
mfd mfd: omap-usb-host: Fix dts probe of children 2018-09-11 16:47:33 +01:00
misc misc: hmc6352: fix potential Spectre v1 2018-09-12 09:31:00 +02:00
mmc mmc: meson-mx-sdio: fix OF child-node lookup 2018-09-05 08:28:45 +02:00
mtd mtd: devices: m25p80: Make sure the buffer passed in op is DMA-able 2018-09-18 10:17:48 +02:00
mux
net Second rc pull request 2018-09-27 21:53:55 +02:00
nfc
ntb
nubus
nvdimm
nvme nvme: properly propagate errors in nvme_mpath_init 2018-09-25 16:21:40 -07:00
nvmem
of Devicetree fixes for 4.19, part 2: 2018-09-14 13:03:17 -10:00
opp
oprofile
parisc
parport
pci pci-v4.19-fixes-2 2018-09-28 18:20:41 +02:00
pcmcia
perf
phy
pinctrl Revert "pinctrl: intel: Do pin translation when lock IRQ" 2018-09-25 12:50:00 +02:00
platform platform/x86: alienware-wmi: Correct a memory leak 2018-09-10 13:45:43 -07:00
pnp
power
powercap
pps
ps3
ptp
pwm
rapidio
ras
regulator regulator: fix crash caused by null driver data 2018-09-20 09:04:51 -07:00
remoteproc
reset
rpmsg
rtc
s390 s390 fixes for 4.19-rc4 2018-09-13 16:22:24 -10:00
sbus
scsi scsi: sd: don't crash the host on invalid commands 2018-09-21 12:42:57 -04:00
sfi
sh
siox
slimbus
sn
soc
soundwire
spi spi: Fixes for v4.19 2018-09-28 18:04:06 -07:00
spmi
ssb
staging This is the 4.19-rc6 release 2018-10-04 11:03:34 +10:00
target scsi: target: iscsi: Use bin2hex instead of a re-implementation 2018-09-21 12:32:30 -04:00
tc
tee
thermal Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2018-08-28 16:11:34 -07:00
thunderbolt
tty This is the 4.19-rc6 release 2018-10-04 11:03:34 +10:00
uio
usb usb: typec: mux: Take care of driver module reference counting 2018-09-20 13:35:01 +02:00
uwb
vfio
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-08-27 11:59:39 -07:00
video fbdev: Add FBINFO_HIDE_SMEM_START flag 2018-09-11 14:11:54 +02:00
virt
virtio
visorbus
vlynq
vme
w1
watchdog
xen xen: issue warning message when out of grant maptrack entries 2018-09-19 11:27:42 -04:00
zorro
Kconfig
Makefile