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atmel: Remove open-coded and wrong strcasecmp 

The kernel's string library does in fact have strcasecmp, at least
since ded220bd8f ("[STRING]: Move strcasecmp/strncasecmp to
lib/string.c"). Moreover, this open-coded version is in fact wrong: If
the strings only differ in their last character, a and b have already
been incremented to point to the terminating NUL bytes, so they would
wrongly be treated as equal.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Rasmus Villemoes 2015-01-21 12:52:07 +01:00 committed by Kalle Valo
parent 961d1bbecf
commit 908414af25
1 changed files with 1 additions and 11 deletions
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12
drivers/net/wireless/atmel.c
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@ -45,7 +45,6 @@
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/timer.h>
#include <asm/byteorder.h>
#include <asm/io.h>
@ -2699,16 +2698,7 @@ static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
domain[REGDOMAINSZ] = 0;
rc = -EINVAL;
for (i = 0; i < ARRAY_SIZE(channel_table); i++) {
/* strcasecmp doesn't exist in the library */
char *a = channel_table[i].name;
char *b = domain;
while (*a) {
char c1 = *a++;
char c2 = *b++;
if (tolower(c1) != tolower(c2))
break;
}
if (!*a && !*b) {
if (!strcasecmp(channel_table[i].name, domain)) {
priv->config_reg_domain = channel_table[i].reg_domain;
rc = 0;
}