drm/i915: fix unpaired i915 device mutex on entervt failure.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4642115..ee896d9 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4087,8 +4087,10 @@
dev_priv->mm.suspended = 0;
ret = i915_gem_init_ringbuffer(dev);
- if (ret != 0)
+ if (ret != 0) {
+ mutex_unlock(&dev->struct_mutex);
return ret;
+ }
spin_lock(&dev_priv->mm.active_list_lock);
BUG_ON(!list_empty(&dev_priv->mm.active_list));