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drm/i915: fix for when semaphore updates fail 

This fixes a long standing issue where emitting the semaphore updates
may have failed, but we've already updated our internal data structure.

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2012-04-11 11:18:20 -07:00 committed by Daniel Vetter
parent 5816d648d5
commit e3a5a2250a
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/i915_gem.c
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@ -2001,10 +2001,12 @@ i915_gem_object_sync(struct drm_i915_gem_object *obj,
seqno = request->seqno;
}
from->sync_seqno[idx] = seqno;
return to->sync_to(to, from, seqno - 1);
ret = to->sync_to(to, from, seqno - 1);
if (!ret)
from->sync_seqno[idx] = seqno;
return ret;
}
static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj)