[PATCH 4.9 092/109] dma-buf/sw-sync: sync_pt is private and of fixed size

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

commit 3b52ce44e720c240afc4c4b03140d7b7811b23bd upstream.

Since sync_pt is only allocated from a single location and is no longer
the base class for fences (that is struct dma_fence) it no longer needs
a generic unsized allocator.

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-5-chris@xxxxxxxxxxxxxxxxxx
[s/dma_fence/fence/g - gregkh]
Cc: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/dma-buf/sw_sync.c |   12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -155,7 +155,6 @@ static void sync_timeline_signal(struct
 /**
  * sync_pt_create() - creates a sync pt
  * @parent:	fence's parent sync_timeline
- * @size:	size to allocate for this pt
  * @inc:	value of the fence
  *
  * Creates a new sync_pt as a child of @parent.  @size bytes will be
@@ -163,15 +162,12 @@ static void sync_timeline_signal(struct
  * the generic sync_timeline struct. Returns the sync_pt object or
  * NULL in case of error.
  */
-static struct sync_pt *sync_pt_create(struct sync_timeline *obj, int size,
-			     unsigned int value)
+static struct sync_pt *sync_pt_create(struct sync_timeline *obj,
+				      unsigned int value)
 {
 	struct sync_pt *pt;
 
-	if (size < sizeof(*pt))
-		return NULL;
-
-	pt = kzalloc(size, GFP_KERNEL);
+	pt = kzalloc(sizeof(*pt), GFP_KERNEL);
 	if (!pt)
 		return NULL;
 
@@ -312,7 +308,7 @@ static long sw_sync_ioctl_create_fence(s
 		goto err;
 	}
 
-	pt = sync_pt_create(obj, sizeof(*pt), data.value);
+	pt = sync_pt_create(obj, data.value);
 	if (!pt) {
 		err = -ENOMEM;
 		goto err;