* [PATCH] mwifiex: remove unnecessary call to memset
@ 2017-09-11 12:46 Himanshu Jha
2017-09-20 12:47 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: Himanshu Jha @ 2017-09-11 12:46 UTC (permalink / raw)
To: amitkarwar
Cc: nishants, gbhat, huxm, kvalo, linux-wireless, netdev,
Himanshu Jha
call to memset to assign 0 value immediately after allocating
memory with kzalloc is unnecesaary as kzalloc allocates the memory
filled with 0 value.
Semantic patch used to resolve this issue:
@@
expression e,e2; constant c;
statement S;
@@
e = kzalloc(e2, c);
if(e == NULL) S
- memset(e, 0, e2);
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
---
drivers/net/wireless/marvell/mwifiex/scan.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/scan.c b/drivers/net/wireless/marvell/mwifiex/scan.c
index c9d41ed..8838b88 100644
--- a/drivers/net/wireless/marvell/mwifiex/scan.c
+++ b/drivers/net/wireless/marvell/mwifiex/scan.c
@@ -1936,8 +1936,6 @@ mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv)
if (!user_scan_cfg)
return -ENOMEM;
- memset(user_scan_cfg, 0, sizeof(*user_scan_cfg));
-
for (id = 0; id < MWIFIEX_USER_SCAN_CHAN_MAX; id++) {
if (!priv->hidden_chan[id].chan_number)
break;
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: mwifiex: remove unnecessary call to memset
2017-09-11 12:46 [PATCH] mwifiex: remove unnecessary call to memset Himanshu Jha
@ 2017-09-20 12:47 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2017-09-20 12:47 UTC (permalink / raw)
To: Himanshu Jha
Cc: amitkarwar, nishants, gbhat, huxm, linux-wireless, netdev,
Himanshu Jha
Himanshu Jha <himanshujha199640@gmail.com> wrote:
> call to memset to assign 0 value immediately after allocating
> memory with kzalloc is unnecesaary as kzalloc allocates the memory
> filled with 0 value.
>
> Semantic patch used to resolve this issue:
>
> @@
> expression e,e2; constant c;
> statement S;
> @@
>
> e = kzalloc(e2, c);
> if(e == NULL) S
> - memset(e, 0, e2);
>
> Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Patch applied to wireless-drivers-next.git, thanks.
85dafc129196 mwifiex: remove unnecessary call to memset
--
https://patchwork.kernel.org/patch/9947331/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-09-20 12:47 ` Kalle Valo
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