[PATCH] drm/i915: Add -EIO to the list of known errors for __wait_seqno

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This prevents a WARN introduced with

  commit de2b998552c1534e87bfbc51ec5734b02bc89020
  Author: Daniel Vetter <daniel.vetter at ffwll.ch>
  Date:   Wed Jul 4 22:52:50 2012 +0200

      drm/i915: don't return a spurious -EIO from intel_ring_begin

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 2479a40..a835c39 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1942,6 +1942,7 @@ static int __wait_seqno(struct intel_ring_buffer *ring, u32 seqno,
 	}
 
 	switch (end) {
+	case -EIO:
 	case -EAGAIN: /* Wedged */
 	case -ERESTARTSYS: /* Signal */
 		return (int)end;
-- 
1.7.10.4



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