From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Kalle Valo <kvalo@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Subject: [PATCH v1 1/2] wireless: ray_cs: Utilize strnlen() in parse_addr()
Date: Fri, 3 Jun 2022 19:44:13 +0300 [thread overview]
Message-ID: <20220603164414.48436-1-andriy.shevchenko@linux.intel.com> (raw)
Instead of doing simple operations and using an additional variable on stack,
utilize strnlen() and reuse len variable.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/net/wireless/ray_cs.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c
index 87e98ab068ed..9ac371d6cd6c 100644
--- a/drivers/net/wireless/ray_cs.c
+++ b/drivers/net/wireless/ray_cs.c
@@ -1643,31 +1643,29 @@ static void authenticate_timeout(struct timer_list *t)
/*===========================================================================*/
static int parse_addr(char *in_str, UCHAR *out)
{
+ int i, k;
int len;
- int i, j, k;
int status;
if (in_str == NULL)
return 0;
- if ((len = strlen(in_str)) < 2)
+ len = strnlen(in_str, ADDRLEN * 2 + 1) - 1;
+ if (len < 1)
return 0;
memset(out, 0, ADDRLEN);
status = 1;
- j = len - 1;
- if (j > 12)
- j = 12;
i = 5;
- while (j > 0) {
- if ((k = hex_to_bin(in_str[j--])) != -1)
+ while (len > 0) {
+ if ((k = hex_to_bin(in_str[len--])) != -1)
out[i] = k;
else
return 0;
- if (j == 0)
+ if (len == 0)
break;
- if ((k = hex_to_bin(in_str[j--])) != -1)
+ if ((k = hex_to_bin(in_str[len--])) != -1)
out[i] += k << 4;
else
return 0;
--
2.35.1
next reply other threads:[~2022-06-03 16:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-03 16:44 Andy Shevchenko [this message]
2022-06-03 16:44 ` [PATCH v1 2/2] wireless: ray_cs: Drop useless status variable in parse_addr() Andy Shevchenko
2022-06-03 16:50 ` [PATCH v1 1/2] wireless: ray_cs: Utilize strnlen() " Joe Perches
2022-06-03 17:05 ` Andy Shevchenko
2022-06-08 8:08 ` [v1,1/2] wifi: " Kalle Valo
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