drm/qxl: Use unlocked gem unreferencing

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: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-4-git-send-email-daniel.vetter@ffwll.ch
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-5-git-send-email-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c
index 7136e521e6dba7e3bc7f9671a580ab218d138e7a..bb7ce07b788b78d40d1b3f1a03b024ad7c1d995e 100644 (file)
--- a/drivers/gpu/drm/qxl/qxl_fb.c
+++ b/drivers/gpu/drm/qxl/qxl_fb.c
@@ -443,11 +443,11 @@ out_unref:
                }
        }
        if (fb && ret) {
-               drm_gem_object_unreference(gobj);
+               drm_gem_object_unreference_unlocked(gobj);
                drm_framebuffer_cleanup(fb);
                kfree(fb);
        }
-       drm_gem_object_unreference(gobj);
+       drm_gem_object_unreference_unlocked(gobj);
        return ret;
 }