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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-05 13:48:22 +0000 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2020-03-11 23:12:38 +0200 |
| commit | c951b0af2dddbb1f34be103029eb9030392d5554 (patch) | |
| tree | f56cfd6886a1a23a3bc9715aae2a14ebb3d3b537 /security | |
| parent | drm/i915: Actually emit the await_start (diff) | |
| download | linux-dev-c951b0af2dddbb1f34be103029eb9030392d5554.tar.xz linux-dev-c951b0af2dddbb1f34be103029eb9030392d5554.zip | |
drm/i915: Return early for await_start on same timeline
Requests within a timeline are ordered by that timeline, so awaiting for
the start of a request within the timeline is a no-op. This used to work
by falling out of the mutex_trylock() as the signaler and waiter had the
same timeline and not returning an error.
Fixes: 6a79d848403d ("drm/i915: Lock signaler timeline while navigating")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.5+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200305134822.2750496-1-chris@chris-wilson.co.uk
(cherry picked from commit ab7a69020fb5d5c7ba19fba60f62fd6f9ca9f779)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions