[PATCH 3.16 160/217] drm/udl: Use unlocked gem unreferencing

[Ben Hutchings]

3.16.35-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Vetter <daniel.vet...@ffwll.ch>

commit 72b9ff0612ad8fc969b910cd00ac16b57a1a9ba4 upstream.

For drm_gem_object_unreference callers are required to hold
dev->struct_mutex, which these paths don't. Enforcing this requirement
has become a bit more strict with

commit ef4c6270bf2867e2f8032e9614d1a8cfc6c71663
Author: Daniel Vetter <daniel.vet...@ffwll.ch>
Date:   Thu Oct 15 09:36:25 2015 +0200

    drm/gem: Check locking in drm_gem_object_unreference

Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
Signed-off-by: Dave Airlie <airl...@redhat.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/gpu/drm/udl/udl_fb.c  | 2 +-
 drivers/gpu/drm/udl/udl_gem.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -545,7 +545,7 @@ static int udlfb_create(struct drm_fb_he
 
        return ret;
 out_gfree:
-       drm_gem_object_unreference(&ufbdev->ufb.obj->base);
+       drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
 out:
        return ret;
 }
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -51,7 +51,7 @@ udl_gem_create(struct drm_file *file,
                return ret;
        }
 
-       drm_gem_object_unreference(&obj->base);
+       drm_gem_object_unreference_unlocked(&obj->base);
        *handle_p = handle;
        return 0;
 }