staging: ozwpan: fix memcmp() test in oz_set_active_pd()

"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@intel.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rupesh Gujare <rgujare@ozmodevices.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c
index d98321945802c8daf8ec71cc3908ec0c44133c7a..758ce0a8d82e03c59d326b5ce0f6b8bdda425b25 100644 (file)
--- 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;