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drm/i915: Immediately process a reset before starting waiting 

As we handoff the GPU reset to the waiter, we need to check we don't
miss a wakeup if it has already been sent prior to us starting the wait.

v2: Tweak checking for reset to be clear to the need before sleeping
after changing the task state.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170223074422.4125-16-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Chris Wilson 2017-02-23 07:44:21 +00:00
parent e07051142c
commit 24f417ec0c
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_gem_request.c
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@ -1126,6 +1126,9 @@ long i915_wait_request(struct drm_i915_gem_request *req,
*/
goto wakeup;
if (flags & I915_WAIT_LOCKED)
__i915_wait_request_check_and_reset(req);
for (;;) {
if (signal_pending_state(state, current)) {
timeout = -ERESTARTSYS;