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net: tulip: Remove private "strncmp"

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The comment says that the built-in strncmp didn't work. That is not
surprising, as apparently "str" semantics are not really what is
wanted (hint: de4x5_strncmp only stops when two different bytes are
encountered or the end is reached; not if either byte happens to be
0). de4x5_strncmp is actually a memcmp (except for the signature and
that bytes are not necessarily treated as unsigned char); since only
the boolean value of the result is used we can just replace
de4x5_strncmp with memcmp.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rasmus Villemoes 2014-12-04 11:30:40 +01:00 committed by David S. Miller
parent c8a73a3568
commit 36c71a735a
1 changed files with 3 additions and 17 deletions
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20
drivers/net/ethernet/dec/tulip/de4x5.c
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@ -995,7 +995,6 @@ static void de4x5_dbg_mii(struct net_device *dev, int k);
static void de4x5_dbg_media(struct net_device *dev);
static void de4x5_dbg_srom(struct de4x5_srom *p);
static void de4x5_dbg_rx(struct sk_buff *skb, int len);
static int de4x5_strncmp(char *a, char *b, int n);
static int dc21041_infoleaf(struct net_device *dev);
static int dc21140_infoleaf(struct net_device *dev);
static int dc21142_infoleaf(struct net_device *dev);
@ -4102,8 +4101,7 @@ get_hw_addr(struct net_device *dev)
}
/*
** Test for enet addresses in the first 32 bytes. The built-in strncmp
** didn't seem to work here...?
** Test for enet addresses in the first 32 bytes.
*/
static int
de4x5_bad_srom(struct de4x5_private *lp)
@ -4111,8 +4109,8 @@ de4x5_bad_srom(struct de4x5_private *lp)
int i, status = 0;
for (i = 0; i < ARRAY_SIZE(enet_det); i++) {
if (!de4x5_strncmp((char *)&lp->srom, (char *)&enet_det[i], 3) &&
!de4x5_strncmp((char *)&lp->srom+0x10, (char *)&enet_det[i], 3)) {
if (!memcmp(&lp->srom, &enet_det[i], 3) &&
!memcmp((char *)&lp->srom+0x10, &enet_det[i], 3)) {
if (i == 0) {
status = SMC;
} else if (i == 1) {
@ -4125,18 +4123,6 @@ de4x5_bad_srom(struct de4x5_private *lp)
return status;
}
static int
de4x5_strncmp(char *a, char *b, int n)
{
int ret=0;
for (;n && !ret; n--) {
ret = *a++ - *b++;
}
return ret;
}
static void
srom_repair(struct net_device *dev, int card)
{