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drm/vc4: Fix -ERESTARTSYS error return from BO waits. 

This caused the wait ioctls to claim that waiting had completed when
we actually got interrupted by a signal before it was done.  Fixes
broken rendering throttling that produced serious lag in X window
dragging.

Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt 2016-01-25 14:32:41 -08:00
parent 2c68f1fcfb
commit 13cf8909ea
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/vc4/vc4_gem.c
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@ -340,12 +340,10 @@ vc4_wait_for_seqno(struct drm_device *dev, uint64_t seqno, uint64_t timeout_ns,
finish_wait(&vc4->job_wait_queue, &wait);
trace_vc4_wait_for_seqno_end(dev, seqno);
if (ret && ret != -ERESTARTSYS) {
if (ret && ret != -ERESTARTSYS)
DRM_ERROR("timeout waiting for render thread idle\n");
return ret;
}
return 0;
return ret;
}
static void