2022-03-18 00:25:58

by Colin Ian King

Subject: [PATCH] xen-blkback: remove redundant assignment to variable i

Variable i is being assigned a value that is never read, it is being
re-assigned later in a for-loop. The assignment is redundant and can
be removed.

Cleans up clang scan build warning:
drivers/block/xen-blkback/blkback.c:934:14: warning: Although the value
stored to 'i' is used in the enclosing expression, the value is never
actually read from 'i' [deadcode.DeadStores]

Signed-off-by: Colin Ian King <[email protected]>
---
drivers/block/xen-blkback/blkback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index d1e26461a64e..de42458195bc 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -931,7 +931,7 @@ static int xen_blkbk_parse_indirect(struct blkif_request *req,
if (rc)
goto unmap;

- for (n = 0, i = 0; n < nseg; n++) {
+ for (n = 0; n < nseg; n++) {
uint8_t first_sect, last_sect;

if ((n % SEGS_PER_INDIRECT_FRAME) == 0) {
--
2.35.1

2022-03-18 06:43:30

by Chaitanya Kulkarni

Subject: Re: [PATCH] xen-blkback: remove redundant assignment to variable i

On 3/17/22 4:46 PM, Colin Ian King wrote:
> Variable i is being assigned a value that is never read, it is being
> re-assigned later in a for-loop. The assignment is redundant and can
> be removed.
>
> Cleans up clang scan build warning:
> drivers/block/xen-blkback/blkback.c:934:14: warning: Although the value
> stored to 'i' is used in the enclosing expression, the value is never
> actually read from 'i' [deadcode.DeadStores]
>
> Signed-off-by: Colin Ian King <[email protected]>


Looks good.

Reviewed-by: Chaitanya Kulkarni <[email protected]>

-ck