dma-fence: remove fill_driver_data callback

Noticed while I was typing docs. Entirely unused.

v2: Remove reference in @timeline_value_str too. While at it clarify
why timeline_value_str has a fence parameter - we don't have an
explicit timeline structure unfortunately.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Cc: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-2-daniel.vetter@ffwll.ch

diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index eb9b05a..111aefe 100644 (file)
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -218,17 +218,6 @@ struct dma_fence_ops {
        void (*release)(struct dma_fence *fence);
 
        /**
-        * @fill_driver_data:
-        *
-        * Callback to fill in free-form debug info.
-        *
-        * Returns amount of bytes filled, or negative error on failure.
-        *
-        * This callback is optional.
-        */
-       int (*fill_driver_data)(struct dma_fence *fence, void *data, int size);
-
-       /**
         * @fence_value_str:
         *
         * Callback to fill in free-form debug info specific to this fence, like
@@ -242,8 +231,9 @@ struct dma_fence_ops {
         * @timeline_value_str:
         *
         * Fills in the current value of the timeline as a string, like the
-        * sequence number. This should match what @fill_driver_data prints for
-        * the most recently signalled fence (assuming no delayed signalling).
+        * sequence number. Note that the specific fence passed to this function
+        * should not matter, drivers should only use it to look up the
+        * corresponding timeline structures.
         */
        void (*timeline_value_str)(struct dma_fence *fence,
                                   char *str, int size);