Re: [staging-next V3] ozwpan: fix memcmp() test in oz_set_active_pd()

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There seems also to be an opportunity in drivers/scsi/qla2xxx/qla_init.c:

memcmp(icb->enode_mac, "\0\0\0\0\0\0", sizeof(icb->enode_mac))

julia

On Sun, 19 Aug 2012, Tomas Winkler wrote:

"addr" is a pointer so it's either 4 or 8 bytes, but actually we want
to compare 6 bytes (ETH_ALEN).

As network stack already provides helper function
is_zero_ether_addr() we use that instead of memcmp

Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Rupesh Gujare <rgujare@xxxxxxxxxxxxxxx>
---
V1: by Dan Carpenter <dan.carpenter@xxxxxxxxxx>
V2: replace memcmp with is_zero_ether_addr
V3: include <linux/etherdevice.h>

drivers/staging/ozwpan/ozcdev.c |    3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c
index d983219..758ce0a 100644
--- a/drivers/staging/ozwpan/ozcdev.c
+++ b/drivers/staging/ozwpan/ozcdev.c
@@ -8,6 +8,7 @@
#include <linux/cdev.h>
#include <linux/uaccess.h>
#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include "ozconfig.h"
@@ -213,7 +214,7 @@ static int oz_set_active_pd(u8 *addr)
		if (old_pd)
			oz_pd_put(old_pd);
	} else {
-		if (!memcmp(addr, "\0\0\0\0\0\0", sizeof(addr))) {
+		if (is_zero_ether_addr(addr)) {
			spin_lock_bh(&g_cdev.lock);
			pd = g_cdev.active_pd;
			g_cdev.active_pd = 0;
--
1.7.4.4

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