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>
mariux64 · Apr 22, 2009 · d816f6a · d816f6a
1 parent 7202178
commit d816f6a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
@@ -4087,8 +4087,10 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
 	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));