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0727e40a48a1d08cf54ce2c01e120864b92e59bf
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Paulo Zanoni 0727e40a48 drm/i915/gen9: fix the WaWmMemoryReadLatency implementation 
Bspec says:
  "The mailbox response data may not account for memory read latency.
   If the mailbox response data for level 0 is 0us, add 2 microseconds
   to the result for each valid level."

This means we should only do the +2 in case wm[0] == 0, not always.

So split the sanitizing implementation from the WA implementation and
fix the WA implementation.

v2: Add Fixes tag (Maarten).

Fixes: 367294be7c ("drm/i915/gen9: Add 2us read latency to WM level")
Cc: stable@vger.kernel.org
Cc: Vandana Kannan <vandana.kannan@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474578035-424-5-git-send-email-paulo.r.zanoni@intel.com
2016-09-26 16:51:43 -03:00
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accessibility
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acpi
libnvdimm, nd_blk: mask off reserved status bits
2016-08-08 09:26:13 -07:00
amba
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android
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ata
Merge tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
2016-07-27 14:03:52 -07:00
atm
drivers: atm: nicstar: Use the correct function to free some resources
2016-07-19 11:30:26 -07:00
auxdisplay
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base
Merge tag 'pm-extra-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-08-05 23:26:16 -04:00
bcma
Merge tag 'wireless-drivers-next-for-davem-2016-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
2016-07-25 11:09:19 -07:00
block
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2016-08-11 14:10:23 -07:00
bluetooth
Bluetooth: btmrvl: reset is_suspending flag in failure path
2016-07-18 10:13:02 +02:00
bus
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:36:01 -04:00
cdrom
cdrom: support read sub-channel command in LBA format
2016-07-12 08:24:50 -07:00
char
agp/intel: Flush chipset writes after updating a single PTE
2016-08-18 22:36:23 +01:00
clk
treewide: replace obsolete _refok by __ref
2016-08-02 17:31:41 -04:00
clocksource
Merge branch 'linus' into timers/urgent, to pick up fixes
2016-08-10 14:36:23 +02:00
connector
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cpufreq
Merge branches 'pm-sleep' and 'pm-cpufreq'
2016-08-12 22:53:58 +02:00
cpuidle
Merge tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-07-30 21:01:36 -07:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2016-08-01 14:28:42 -04:00
dax
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dca
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devfreq
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dio
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dma
Merge tag 'dmaengine-4.8-rc1' of git://git.infradead.org/users/vkoul/slave-dma
2016-07-28 15:45:17 -07:00
dma-buf
dma-buf/sync_file: only enable fence signalling on poll()
2016-08-11 15:39:38 +05:30
edac
Merge tag 'edac_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
2016-07-27 13:40:47 -07:00
eisa
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extcon
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firewire
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firmware
efi/capsule: Allocate whole capsule into virtual memory
2016-08-11 13:55:36 +02:00
fmc
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fpga
drivers/fpga/Kconfig: fix build failure
2016-08-04 08:50:07 -04:00
gpio
Merge tag 'gpio-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
2016-07-26 19:16:01 -07:00
gpu
drm/i915/gen9: fix the WaWmMemoryReadLatency implementation
2016-09-26 16:51:43 -03:00
hid
Merge branch 'for-4.8/hid-led' into for-linus
2016-07-28 10:49:23 +02:00
hsi
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hv
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hwmon
Merge tag 'hwmon-for-linus-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
2016-08-01 16:49:13 -04:00
hwspinlock
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hwtracing
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-29 13:55:30 -07:00
i2c
Merge tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-07-30 21:01:36 -07:00
ide
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
2016-07-29 13:29:06 -07:00
idle
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-30 12:56:26 -07:00
iio
Merge tag 'iio-for-4.8c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
2016-07-14 12:05:29 +09:00
infiniband
Merge tag 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
2016-08-04 20:26:31 -04:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2016-08-05 23:24:15 -04:00
iommu
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
ipack
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irqchip
tree-wide: replace config_enabled() with IS_ENABLED()
2016-08-04 08:50:07 -04:00
isdn
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leds
Merge tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-07-30 21:01:36 -07:00
lguest
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lightnvm
block: get rid of bio_rw and READA
2016-07-20 17:37:01 -06:00
macintosh
Merge tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-07-30 21:01:36 -07:00
mailbox
mailbox: Fix format and type mismatches in Broadcom PDC driver
2016-07-28 21:27:31 +05:30
mcb
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md
block: rename bio bi_rw to bi_opf
2016-08-07 14:41:02 -06:00
media
Merge tag 'media/v4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
2016-08-04 09:59:37 -04:00
memory
Merge tag 'for-linus-20160801' of git://git.infradead.org/linux-mtd
2016-08-02 17:05:11 -04:00
memstick
memstick: don't allocate unused major for ms_block
2016-08-02 17:31:41 -04:00
message
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mfd
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:36:01 -04:00
misc
Merge tag 'powerpc-4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-08-12 12:09:44 -07:00
mmc
Merge tag 'mmc-v4.8' of git://git.linaro.org/people/ulf.hansson/mmc
2016-07-31 21:36:58 -04:00
mtd
Merge tag 'upstream-4.8-rc1' of git://git.infradead.org/linux-ubifs
2016-08-04 19:51:49 -04:00
net
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2016-08-06 09:20:13 -04:00
nfc
Merge tag 'nfc-next-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
2016-07-20 23:39:36 -07:00
ntb
NTB: ntb_hw_intel: use local variable pdev
2016-08-05 10:34:13 -04:00
nubus
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nvdimm
nvdimm, btt: add a size attribute for BTTs
2016-08-08 09:26:14 -07:00
nvme
nvme: Suspend all queues before deletion
2016-08-11 09:35:57 -06:00
nvmem
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of
ramoops: use DT reserved-memory bindings
2016-08-05 11:21:36 -07:00
oprofile
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parisc
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
parport
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pci
genirq/msi: Make sure PCI MSIs are activated early
2016-08-09 09:19:32 +02:00
pcmcia
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perf
drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property
2016-08-09 17:57:39 +01:00
phy
Merge tag 'mmc-v4.8' of git://git.linaro.org/people/ulf.hansson/mmc
2016-07-31 21:36:58 -04:00
pinctrl
Merge tag 'pinctrl-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
2016-07-28 17:06:51 -07:00
platform
dell-wmi: Ignore WMI event 0xe00e
2016-08-08 11:00:21 -07:00
pnp
PNP: pnpbios: add header file to fix build errors
2016-07-27 18:52:54 +02:00
power
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:36:01 -04:00
powercap
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pps
pps: do not crash when failed to register
2016-07-23 10:25:54 +09:00
ps3
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ptp
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pwm
Merge tag 'pwm/for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
2016-08-06 00:01:33 -04:00
rapidio
rapidio: dereferencing an error pointer
2016-08-10 16:40:56 -07:00
ras
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regulator
Merge tag 'pwm/for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
2016-08-06 00:01:33 -04:00
remoteproc
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
reset
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rpmsg
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rtc
Merge tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
2016-08-05 09:48:22 -04:00
s390
virtio/s390: deprecate old transport
2016-08-09 13:42:41 +03:00
sbus
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scsi
ipr: Fix sync scsi scan
2016-08-09 10:17:42 -07:00
sfi
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sh
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sn
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soc
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:36:01 -04:00
spi
Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:37:45 -04:00
spmi
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ssb
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staging
dma-buf/sync_file: refactor fence storage in struct sync_file
2016-08-11 15:33:24 +05:30
target
target: iblock_execute_sync_cache() should use bio_set_op_attrs()
2016-08-07 14:41:02 -06:00
tc
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thermal
Merge branches 'thermal-intel' and 'thermal-core' into next
2016-08-08 10:59:35 +08:00
thunderbolt
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tty
tree-wide: replace config_enabled() with IS_ENABLED()
2016-08-04 08:50:07 -04:00
uio
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usb
Merge tag 'usb-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2016-08-05 23:07:43 -04:00
uwb
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vfio
vfio/pci: Fix NULL pointer oops in error interrupt setup handling
2016-08-08 16:16:23 -06:00
vhost
vhost/vsock: fix vhost virtio_vsock_pkt use-after-free
2016-08-09 13:42:37 +03:00
video
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
virt
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virtio
virtio: fix error handling for debug builds
2016-08-09 13:42:35 +03:00
vlynq
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vme
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w1
w1:omap_hdq: fix regression
2016-08-02 19:35:40 -04:00
watchdog
watchdog: gpio_wdt: Fix missing platform_set_drvdata() in gpio_wdt_probe()
2016-07-27 10:47:43 +02:00
xen
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
zorro
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Kconfig
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Makefile
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2016-08-06 09:20:13 -04:00