[PATCH] dma-buf: system_heap: fix returnvar.cocci warnings

[kernel test robot <lkp@intel.com>]

[-- Attachment #1: Type: text/plain, Size: 1575 bytes --]

CC: kbuild-all(a)lists.01.org
In-Reply-To: <20210205080621.3102035-7-john.stultz@linaro.org>
References: <20210205080621.3102035-7-john.stultz@linaro.org>
TO: John Stultz <john.stultz@linaro.org>

From: kernel test robot <lkp@intel.com>

drivers/dma-buf/heaps/system_heap.c:299:5-8: Unneeded variable: "ret". Return "0" on line 308


 Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

CC: John Stultz <john.stultz@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

url:    https://github.com/0day-ci/linux/commits/John-Stultz/Generic-page-pool-deferred-freeing-for-system-dmabuf-heap/20210205-160846
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ab38c17aac10bf55ab3efde4c4db3893d8691d2
:::::: branch date: 7 hours ago
:::::: commit date: 7 hours ago

Please take the patch only if it's a positive warning. Thanks!

 system_heap.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/dma-buf/heaps/system_heap.c
+++ b/drivers/dma-buf/heaps/system_heap.c
@@ -296,7 +296,6 @@ static int system_heap_zero_buffer(struc
 	struct sg_page_iter piter;
 	struct page *p;
 	void *vaddr;
-	int ret = 0;
 
 	for_each_sgtable_page(sgt, &piter, 0) {
 		p = sg_page_iter_page(&piter);
@@ -305,7 +304,7 @@ static int system_heap_zero_buffer(struc
 		kunmap_atomic(vaddr);
 	}
 
-	return ret;
+	return 0;
 }
 
 static void system_heap_dma_buf_release(struct dma_buf *dmabuf)