drivers/gpu/drm/drm_syncobj.c:181:6: warning: no previous prototype for 
‘drm_syncobj_add_callback’ [-Wmissing-prototypes]
drivers/gpu/drm/drm_syncobj.c:190:6: warning: no previous prototype for 
‘drm_syncobj_remove_callback’ [-Wmissing-prototypes]

Fixing that leads to

drivers/gpu/drm/drm_syncobj.c:181:13: warning: ‘drm_syncobj_add_callback’ 
defined but not used [-Wunused-function]

so remove the unused drm_syncobj_add_callback() entirely.

Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_syncobj.c | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index d3e2335b88f9..4dca5f7e8c4b 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -123,9 +123,9 @@ struct drm_syncobj *drm_syncobj_find(struct drm_file 
*file_private,
 }
 EXPORT_SYMBOL(drm_syncobj_find);
 
-static struct dma_fence
-*drm_syncobj_find_signal_pt_for_point(struct drm_syncobj *syncobj,
-                                     uint64_t point)
+static struct dma_fence *
+drm_syncobj_find_signal_pt_for_point(struct drm_syncobj *syncobj,
+                                    uint64_t point)
 {
        struct drm_syncobj_signal_pt *signal_pt;
 
@@ -178,17 +178,8 @@ static void drm_syncobj_fence_get_or_add_callback(struct 
drm_syncobj *syncobj,
        mutex_unlock(&syncobj->cb_mutex);
 }
 
-void drm_syncobj_add_callback(struct drm_syncobj *syncobj,
-                             struct drm_syncobj_cb *cb,
-                             drm_syncobj_func_t func)
-{
-       mutex_lock(&syncobj->cb_mutex);
-       drm_syncobj_add_callback_locked(syncobj, cb, func);
-       mutex_unlock(&syncobj->cb_mutex);
-}
-
-void drm_syncobj_remove_callback(struct drm_syncobj *syncobj,
-                                struct drm_syncobj_cb *cb)
+static void drm_syncobj_remove_callback(struct drm_syncobj *syncobj,
+                                       struct drm_syncobj_cb *cb)
 {
        mutex_lock(&syncobj->cb_mutex);
        list_del_init(&cb->node);
-- 
2.19.1

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