linux-kernel - [v2] dma-buf: heaps: bugfix for selftest failure

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Date:   Sat,  7 Mar 2020 22:02:45 +0800
From:   Leon He <hexiaolong2008@...il.com>
To:     shuah@...nel.org, sumit.semwal@...aro.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org, Leon He <leon.he@...soc.com>
Subject: [v2] dma-buf: heaps: bugfix for selftest failure

From: Leon He <leon.he@...soc.com>

There are two errors in the dmabuf-heap selftest:
1. The 'char name[5]' was not initialized to zero, which will cause
   strcmp(name, "vgem") failed in check_vgem().
2. The return value of test_alloc_errors() should be reversed, other-
   wise the while loop in main() will be broken.

Signed-off-by: Leon He <leon.he@...soc.com>
---
 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
index cd5e1f6..836b185 100644
--- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -22,7 +22,7 @@
 static int check_vgem(int fd)
 {
 	drm_version_t version = { 0 };
-	char name[5];
+	char name[5] = { 0 };
 	int ret;
 
 	version.name_len = 4;
@@ -357,7 +357,7 @@ static int test_alloc_errors(char *heap_name)
 	if (heap_fd >= 0)
 		close(heap_fd);
 
-	return ret;
+	return !ret;
 }
 
 int main(void)
-- 
2.7.4