Akash Goel 782f6bc0ab 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		2016-04-09 11:37:48 +01:00
..
amd	drm/amdkfd: uninitialized variable in dbgdev_wave_control_set_registers()	2016-03-15 14:09:37 +02:00
arm	drm: Add support for ARM's HDLCD controller.	2016-02-10 13:44:16 +00:00
armada	drm/armada: Remove NULL open/pre/postclose hooks	2016-01-25 19:35:05 +01:00
ast	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
atmel-hlcdc	drm/atmel-hlcdc: remove optional dummy crtc mode_fixup function.	2016-03-04 18:09:51 +01:00
bochs	drm/bochs: removed optional dummy crtc mode_fixup function.	2016-03-04 18:16:51 +01:00
bridge	drm/bridge: removed dummy mode_fixup function from dw-hdmi.	2016-02-11 09:24:01 +01:00
cirrus	drm/cirrus: removed optional dummy crtc mode_fixup function.	2016-03-04 17:54:12 +01:00
etnaviv	drm: etnaviv: clean up submit_bo()	2016-03-07 15:37:01 +01:00
exynos	drm/exynos: add DRM_EXYNOS_GEM_MAP ioctl	2016-03-13 14:54:03 +09:00
fsl-dcu	drm/fsl-dcu: removed optional dummy crtc mode_fixup function.	2016-03-04 18:16:45 +01:00
gma500	drm/gma: removed optional dummy crtc mode_fixup function.	2016-03-04 17:58:34 +01:00
i2c	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
i810
i915	drm/i915: Fixup the free space logic in ring_prepare	2016-04-09 11:37:48 +01:00
imx	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
mga
mgag200	drm/mgag200: removed optional dummy crtc mode_fixup function.	2016-03-04 17:54:17 +01:00
msm	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
nouveau	nouveau: fix nv40_perfctr_next() cleanup regression	2016-03-16 15:08:43 +10:00
omapdrm	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
panel	drm/fsl-dcu: use mode flags for hsync/vsync polarity	2016-02-25 16:13:16 -08:00
qxl	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
r128
radeon	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
rcar-du	drm/rcar-du: removed optional dummy crtc mode_fixup function.	2016-03-04 17:58:47 +01:00
rockchip	imx-drm vblank IRQ control, fence support, and of endpoint helpers	2016-03-02 17:52:51 +10:00
savage
shmobile	drm/shmobile: removed optional dummy crtc mode_fixup function.	2016-03-04 17:59:44 +01:00
sis
sti	drm/sti: removed optional dummy crtc mode_fixup function.	2016-03-04 18:09:20 +01:00
tdfx
tegra	drm/tegra: drop unused variable.	2016-02-09 11:17:37 +10:00
tilcdc	drm/tilcdc: Use devm_kzalloc() and devm_kcalloc() for private data	2016-02-25 16:39:47 +02:00
ttm
udl	drm/udl: removed optional dummy crtc mode_fixup function.	2016-03-04 17:54:22 +01:00
vc4	drm/vc4: Recognize a more specific compatible string for V3D.	2016-03-13 18:54:24 -07:00
vgem
via
virtio	drm/virtio: removed optional dummy crtc mode_fixup function.	2016-03-04 18:15:38 +01:00
vmwgfx	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
drm_atomic.c	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
drm_auth.c
drm_bridge.c
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c	drm: introduce pipe color correction properties	2016-03-08 13:57:32 +01:00
drm_crtc_internal.h
drm_crtc.c	Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-03-16 11:09:26 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_aux_dev.c	drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers.	2016-02-12 14:22:40 +01:00
drm_dp_helper.c	drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers.	2016-02-12 14:22:40 +01:00
drm_dp_mst_topology.c	Revert "drm/dp/mst: change MST detection scheme"	2016-02-17 14:07:48 +10:00
drm_drv.c
drm_edid_load.c
drm_edid.c	drm/edid: Extract SADs properly from multiple audio data blocks	2016-03-13 19:36:17 +01:00
drm_encoder_slave.c	drm: fixes when i2c encoder slave mode_fixup is null.	2016-02-10 15:14:49 +01:00
drm_fb_cma_helper.c
drm_fb_helper.c	drm/fb_helper: Use add_one_connector in add_all_connectors.	2016-02-15 14:56:46 +01:00
drm_flip_work.c
drm_fops.c	drm: Nuke vblank event file cleanup code	2016-02-08 09:55:47 +01:00
drm_gem_cma_helper.c
drm_gem.c
drm_global.c
drm_hashtab.c	tree wide: use kvfree() than conditional kfree()/vfree()	2016-01-22 17:02:18 -08:00
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
drm_kms_helper_common.c	drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers.	2016-02-12 14:22:40 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c
drm_modes.c	drm: modes: add missing [drm] to message printing	2016-02-09 16:34:44 +01:00
drm_modeset_lock.c
drm_of.c	drm: add drm_of_encoder_active_endpoint helpers	2016-02-10 14:19:21 +01:00
drm_panel.c
drm_pci.c
drm_plane_helper.c
drm_platform.c
drm_prime.c	drm: prime: Honour O_RDWR during prime-handle-to-fd	2016-02-09 09:25:12 +01:00
drm_probe_helper.c
drm_rect.c
drm_scatter.c
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig	Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-next	2016-02-19 11:13:01 +10:00
Makefile	Merge tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-02-19 10:57:44 +10:00