Akash Goel
d43f3ebf12
drm/i915: Fixup the free space logic in ring_prepare ...
Currently for the case where there is enough space at the end of Ring
buffer for accommodating only the base request, the wrapround is done
immediately and as a result the base request gets added at the start
of Ring buffer. But there may not be enough free space at the beginning
to accommodate the base request, as before the wraparound, the wait was
effectively done for the reserved_size free space from the start of
Ring buffer. In such a case there is a potential of Ring buffer overflow,
the instructions at the head of Ring (ACTHD) can get overwritten.
Since the base request can fit in the remaining space, there is no need
to wraparound immediately. The wraparound will anyway happen later when
the reserved part starts getting used.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Akash Goel <akash.goel@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1457688402-10411-1-git-send-email-akash.goel@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
(cherry picked from commit 782f6bc0ab
2016-04-18 12:35:49 +03:00
Merge branch 'acpi-processor'
2016-04-02 01:17:36 +02:00
Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2016-03-18 20:06:46 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2016-03-17 21:38:27 -07:00
PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
2016-04-07 22:23:47 +02:00
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
2016-04-15 15:44:10 -07:00
mvebu fixes for 4.6 (part 1)
2016-04-12 12:35:07 -07:00
hwrng: bcm63xx - fix device tree compilation
2016-04-05 20:23:11 +08:00
clk: qcom: ipq4019: add some fixed clocks for ddrppl and fepll
2016-03-29 16:31:16 -07:00
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-24 10:32:42 -07:00
Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'acpi-cppc'
2016-04-08 21:46:05 +02:00
cpuidle: menu: Fall back to polling if next timer event is near
2016-03-21 15:50:28 +01:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2016-03-23 06:12:39 -07:00
PM / devfreq: Spelling s/frequnecy/frequency/
2016-03-17 02:30:16 +01:00
Merge branch 'fix/edma' into fixes
2016-04-16 22:52:03 +05:30
dma-buf: Update docs for SYNC ioctl
2016-03-21 09:26:45 +01:00
EDAC queue for 4.6
2016-03-16 08:36:55 -07:00
extcon: palmas: Drop stray IRQF_EARLY_RESUME flag
2016-04-04 08:32:45 +09:00
IEEE 1394 subsystem patch:
2016-03-25 08:52:25 -07:00
Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-04-16 15:37:05 -07:00
gpio: pca953x: Use correct u16 value for register word write
2016-04-08 11:49:47 +02:00
drm/i915: Fixup the free space logic in ring_prepare
2016-04-18 12:35:49 +03:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2016-04-11 12:31:09 -07:00
Char/Misc patches for 4.6-rc1
2016-03-17 13:47:50 -07:00
hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated
2016-03-27 10:37:48 -07:00
i2c: jz4780: really prevent potential division by zero
2016-04-09 08:36:44 +02:00
ide: palm_bk3710: test clock rate to avoid division by 0
2016-03-20 16:59:27 -04:00
intel_idle: Add KBL support
2016-04-07 22:11:08 +02:00
Second set of IIO fixes for the 4.6 cycle.
2016-04-04 13:45:10 -07:00
Revert "ib_srpt: Convert to percpu_ida tag allocation"
2016-04-07 18:16:20 -07:00
Merge branch 'akpm' (patches from Andrew)
2016-03-25 16:59:11 -07:00
iommu/vt-d: Silence an uninitialized variable warning
2016-04-07 14:51:47 +02:00
irqchip/mbigen: Make CONFIG_HISILICON_IRQ_MBIGEN a hidden option
2016-03-23 12:02:29 +01:00
Drivers: isdn: hisax: isac.c: Fix assignment and check into one expression.
2016-03-27 22:38:12 -04:00
platform-drivers-x86 for 4.6-1
2016-03-23 17:20:59 -07:00
lguest, x86/entry/32: Fix handling of guest syscalls using interrupt gates
2016-04-01 08:58:13 +02:00
lightnvm: do not load L2P table if not supported
2016-03-18 18:10:38 -07:00
Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration
2016-04-14 18:40:47 -07:00
dm cache metadata: fix cmd_read_lock() acquiring write lock
2016-04-17 11:24:46 -04:00
media fixes for v4.6-rc2
2016-04-05 06:47:50 -07:00
MTD updates for v4.6
2016-03-24 19:57:15 -07:00
drivers/memstick/host/r592.c: avoid gcc-6 warning
2016-03-25 16:37:42 -07:00
- New Drivers
2016-03-18 10:15:11 -07:00
lkdtm: do not leak free page on kmalloc failure
2016-04-06 16:22:25 -07:00
mmc: tegra: Disable UHS-I modes for Tegra124
2016-04-14 11:40:01 +02:00
One MTD fix for v4.6-rc4:
2016-04-15 15:25:09 -07:00
tuntap: restore default qdisc
2016-04-08 15:52:45 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2016-03-19 10:05:34 -07:00
NTB: Remove _addr functions from ntb_hw_amd
2016-03-26 11:44:33 -04:00
libnvdimm, pmem: clarify the write+clear_poison+write flow
2016-04-15 14:59:41 -06:00
NVMe: Always use MSI/MSI-x interrupts
2016-04-14 14:04:50 -06:00
DeviceTree updates for 4.6:
2016-03-19 15:15:07 -07:00
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
PCI changes for the v4.6 merge window:
2016-03-16 14:45:55 -07:00
pci-sysfs: use proper file capability helper function
2016-04-14 12:56:09 -07:00
pcmcia: db1xxx_ss: fix last irq_to_gpio user
2016-03-29 22:48:53 +02:00
drivers/perf: arm_pmu: avoid NULL dereference when not using devicetree
2016-03-21 11:36:17 +00:00
Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq""
2016-04-01 15:21:27 +02:00
Convert straggling drivers to new six-argument get_user_pages()
2016-04-02 18:35:05 -05:00
Power management and ACPI material for v4.6-rc1, part 2
2016-03-25 16:55:37 -07:00
powercap: intel_rapl: Add missing Haswell model
2016-04-05 03:44:48 +02:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-15 12:13:56 -07:00
pwm: fsl-ftm: Use flat regmap cache
2016-04-14 16:54:00 +02:00
Convert straggling drivers to new six-argument get_user_pages()
2016-04-02 18:35:05 -05:00
- New Drivers
2016-03-18 10:15:11 -07:00
remoteproc: st: fix check of syscon_regmap_lookup_by_phandle() return value
2016-03-28 16:19:00 -07:00
RTC for 4.6 #2
2016-03-24 22:49:08 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2016-04-01 07:15:54 -05:00
SCSI fixes on 20160408
2016-04-09 12:00:42 -07:00
ARM: SoC driver updates for v4.6
2016-03-20 15:40:32 -07:00
Merge remote-tracking branches 'spi/fix/omap2' and 'spi/fix/rockchip' into spi-linus
2016-04-04 10:05:49 -07:00
Staging / IIO driver fixes for 4.6-rc3
2016-04-09 12:09:37 -07:00
target: add a new add_wwn_groups fabrics method
2016-03-30 20:06:44 -07:00
Thermal: Ignore invalid trip points
2016-03-18 14:10:57 +08:00
tty: Fix merge of "tty: Refactor tty_open()"
2016-03-31 20:49:39 -07:00
usb: hcd: out of bounds access in for_each_companion
2016-04-13 12:06:18 -07:00
VFIO updates for v4.6-rc1
2016-03-17 13:05:09 -07:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2016-03-22 12:41:14 -07:00
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
virtio: virtio 1.0 cs04 spec compliance for reset
2016-04-07 15:16:39 +03:00
hpwdt: use nmi_panic() when kernel panics in NMI handler
2016-03-22 15:36:02 -07:00
xen/events: Mask a moving irq
2016-04-04 11:18:00 +01:00
d43f3ebf12