From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 8 Feb 2009 19:07:51 +0000 (+0000)
Subject: drm/i915: hold mutex for unreference() in i915_gem_tiling.c
X-Git-Tag: firefly_0821_release~15472^2~21
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d6873102fd36c577f88174d8bd50f1d51645fc51;p=firefly-linux-kernel-4.4.55.git

drm/i915: hold mutex for unreference() in i915_gem_tiling.c

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
---

diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index fa1685cba840..7fb4191ef934 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -299,9 +299,8 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
 	}
 	obj_priv->stride = args->stride;
 
-	mutex_unlock(&dev->struct_mutex);
-
 	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }
@@ -340,9 +339,8 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
 		DRM_ERROR("unknown tiling mode\n");
 	}
 
-	mutex_unlock(&dev->struct_mutex);
-
 	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }