[Bug 78274] [BDW Bisected]BUG: unable to handle kernel paging request at ffffc900110a0000
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed May 7 07:59:16 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=78274
--- Comment #8 from Ben Widawsky <ben at bwidawsk.net> ---
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 40a7aa4..62fd8a6 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -717,6 +717,9 @@ gen6_add_request(struct intel_ring_buffer *ring)
{
int ret;
+ if (!i915_semaphore_is_enabled(ring->dev))
+ return 0;
+
ret = ring->semaphore.signal(ring, 4);
if (ret)
return ret;
--
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