[PATCH 4.9 11/61] dma-buf: remove redundant initialization of sg_table

Greg Kroah-Hartman
2018-06-05T17:04:43Z

From: Colin Ian King <colin.king@canonical.com>

commit 531beb067c6185aceabfdee0965234c6a8fd133b upstream.

sg_table is being initialized and is never read before it is updated
again later on, hence making the initialization redundant. Remove
the initialization.

Detected by clang scan-build:
"warning: Value stored to 'sg_table' during its initialization is
never read"

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170914230516.6056-1-colin.king@canonical.com
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/dma-buf/dma-buf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -551,7 +551,7 @@ EXPORT_SYMBOL_GPL(dma_buf_detach);
struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
enum dma_data_direction direction)
{
- struct sg_table *sg_table = ERR_PTR(-EINVAL);
+ struct sg_table *sg_table;

might_sleep();