drm/udl: Use unlocked gem unreferencing

[ Upstream commit 72b9ff0612ad8fc969b910cd00ac16b57a1a9ba4 ]

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.vetter@ffwll.ch>
Date:   Thu Oct 15 09:36:25 2015 +0200

    drm/gem: Check locking in drm_gem_object_unreference

Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 5fc16ce..cd8d183 100644 (file)
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -546,7 +546,7 @@ static int udlfb_create(struct drm_fb_helper *helper,
 
        return ret;
 out_gfree:
-       drm_gem_object_unreference(&ufbdev->ufb.obj->base);
+       drm_gem_object_unreference_unlocked(&ufbdev->ufb.obj->base);
 out:
        return ret;
 }

diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c
index 2a0a784..d7528e0 100644 (file)
--- a/drivers/gpu/drm/udl/udl_gem.c
+++ b/drivers/gpu/drm/udl/udl_gem.c
@@ -52,7 +52,7 @@ 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;
 }