[PATCH] dma-buf: Use atomic64_inc_return() in dma_buf_getfile()

[Uros Bizjak]

Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.

Signed-off-by: Uros Bizjak <ubiz...@gmail.com>
Cc: Sumit Semwal <sumit.sem...@linaro.org>
Cc: "Christian König" <christian.koe...@amd.com>
---
 drivers/dma-buf/dma-buf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 8892bc701a66..a3649db76add 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -558,7 +558,7 @@ static struct file *dma_buf_getfile(size_t size, int flags)
         * Override ->i_ino with the unique and dmabuffs specific
         * value.
         */
-       inode->i_ino = atomic64_add_return(1, &dmabuf_inode);
+       inode->i_ino = atomic64_inc_return(&dmabuf_inode);
        flags &= O_ACCMODE | O_NONBLOCK;
        file = alloc_file_pseudo(inode, dma_buf_mnt, "dmabuf",
                                 flags, &dma_buf_fops);
-- 
2.46.2