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author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-06 12:56:17 +0100 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-06 18:23:20 +0100 |
commit | 8d550824c6f52506754f11cb6be51aa153cc580d (patch) | |
tree | 026b3f7fa482214eb3bd96c32bcd61b71323630e /mm/shmem.c | |
parent | 320671f94ada80ff036cc9d5dcd730ba4f3e0f1a (diff) |
drm/i915: Order two completing nop_submit_request
If two nop's (requests in-flight following a wedged device) complete at
the same time, the global_seqno value written to the HWSP is undefined
as the two threads are not serialized.
v2: Use irqsafe spinlock. We expect the callback may be called from
inside another irq spinlock, so we can't unconditionally restore irqs.
Fixes: ce1135c7de64 ("drm/i915: Complete requests in nop_submit_request")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006115617.18432-1-chris@chris-wilson.co.uk
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions