staging/android: remove .{fence, timeline}_value_str() from timeline_ops

Now that the value of fence and the timeline are not stored by sw_sync
anymore we can remove this extra abstraction to retrieve this data.

This patch changes both fence_ops (.fence_value_str and
.timeline_value_str) to return the str directly.

It also clean up struct sync_timeline_ops by removing both ops from there.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/sw_sync.c

@@ -38,25 +38,8 @@ struct fence *sw_sync_pt_create(struct sw_sync_timeline *obj, u32 value)
 }
 EXPORT_SYMBOL(sw_sync_pt_create);
 
-static void sw_sync_timeline_value_str(struct sync_timeline *sync_timeline,
-				       char *str, int size)
-{
-	struct sw_sync_timeline *timeline =
-		(struct sw_sync_timeline *)sync_timeline;
-	snprintf(str, size, "%d", timeline->value);
-}
-
-static void sw_sync_fence_value_str(struct fence *fence, char *str, int size)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *)fence;
-
-	snprintf(str, size, "%d", pt->value);
-}
-
 static struct sync_timeline_ops sw_sync_timeline_ops = {
 	.driver_name = "sw_sync",
-	.timeline_value_str = sw_sync_timeline_value_str,
-	.fence_value_str = sw_sync_fence_value_str,
 };
 
 struct sw_sync_timeline *sw_sync_timeline_create(const char *name)

drivers/staging/android/sync.c

@@ -185,14 +185,7 @@ static bool android_fence_enable_signaling(struct fence *fence)
 static void android_fence_value_str(struct fence *fence,
 				    char *str, int size)
 {
-	struct sync_timeline *parent = fence_parent(fence);
-
-	if (!parent->ops->fence_value_str) {
-		if (size)
-			*str = 0;
-		return;
-	}
-	parent->ops->fence_value_str(fence, str, size);
+	snprintf(str, size, "%d", fence->seqno);
 }
 
 static void android_fence_timeline_value_str(struct fence *fence,
@@ -200,12 +193,7 @@ static void android_fence_timeline_value_str(struct fence *fence,
 {
 	struct sync_timeline *parent = fence_parent(fence);
 
-	if (!parent->ops->timeline_value_str) {
-		if (size)
-			*str = 0;
-		return;
-	}
-	parent->ops->timeline_value_str(parent, str, size);
+	snprintf(str, size, "%d", parent->value);
 }
 
 static const struct fence_ops android_fence_ops = {

drivers/staging/android/sync.h

@@ -28,18 +28,9 @@ struct sync_timeline;
 /**
  * struct sync_timeline_ops - sync object implementation ops
  * @driver_name:	name of the implementation
- * @timeline_value_str: fill str with the value of the sync_timeline's counter
- * @fence_value_str:	fill str with the value of the fence
  */
 struct sync_timeline_ops {
 	const char *driver_name;
-
-	/* optional */
-	void (*timeline_value_str)(struct sync_timeline *timeline, char *str,
-				   int size);
-
-	/* optional */
-	void (*fence_value_str)(struct fence *fence, char *str, int size);
 };
 
 /**

drivers/staging/android/sync_debug.c

@@ -133,16 +133,8 @@ static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
 	struct list_head *pos;
 	unsigned long flags;
 
-	seq_printf(s, "%s %s", obj->name, obj->ops->driver_name);
-
-	if (obj->ops->timeline_value_str) {
-		char value[64];
-
-		obj->ops->timeline_value_str(obj, value, sizeof(value));
-		seq_printf(s, ": %s", value);
-	}
-
-	seq_puts(s, "\n");
+	seq_printf(s, "%s %s: %d\n", obj->name, obj->ops->driver_name,
+		   obj->value);
 
 	spin_lock_irqsave(&obj->child_list_lock, flags);
 	list_for_each(pos, &obj->child_list_head) {

drivers/staging/android/trace/sync.h

@@ -15,21 +15,15 @@ TRACE_EVENT(sync_timeline,
 
 	TP_STRUCT__entry(
 			__string(name, timeline->name)
-			__array(char, value, 32)
+			__field(u32, value)
 	),
 
 	TP_fast_assign(
 			__assign_str(name, timeline->name);
-			if (timeline->ops->timeline_value_str) {
-				timeline->ops->timeline_value_str(timeline,
-							__entry->value,
-							sizeof(__entry->value));
-			} else {
-				__entry->value[0] = '\0';
-			}
+			__entry->value = timeline->value;
 	),
 
-	TP_printk("name=%s value=%s", __get_str(name), __entry->value)
+	TP_printk("name=%s value=%d", __get_str(name), __entry->value)
 );
 
 #endif /* if !defined(_TRACE_SYNC_H) || defined(TRACE_HEADER_MULTI_READ) */