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mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-27 08:05:27 +08:00
linux-next/drivers/gpu
Chris Wilson 43dc7fe2b2 drm: Mark up accesses of vblank->enabled outside of its spinlock
Order the update to vblank->enabled after the timestamp is primed so
that a concurrent unlocked reader will only see the vblank->enabled with
the current timestamp.

v2: vblank->enable is guarded by dev->vbl_lock not
dev->vblank_time_lock, update the READ_ONCE accordingly.

Do not add a READ_ONCE(vblank->enabled) inside the interrupt handler to
avoid missing an interrupt whilst racing with enable_vblank()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317202030.24410-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-03-29 13:51:49 +03:00
..
drm drm: Mark up accesses of vblank->enabled outside of its spinlock 2017-03-29 13:51:49 +03:00
host1x gpu: host1x: Set OF node for new host1x devices 2017-01-30 11:47:44 +01:00
ipu-v3 gpu: ipu-v3: only set non-zero AXI ID for IC when PRG is absent 2017-03-16 10:14:49 +01:00
vga Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
Makefile