drm/i915: take struct mutex around fb unref
Need to do this in case the unref ends up doing a free.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 13f9b66..4d2baf7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1606,7 +1606,9 @@
ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
if (ret) {
+ mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
+ mutex_unlock(&dev->struct_mutex);
return NULL;
}