staging: rtl8192e: use is_zero_ether_addr() instead of memcmp()

Using is_zero_ether_addr() instead of directly use
memcmp() to determine if the ethernet address is all
zeros.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8192e/rtllib_softmac_wx.c b/drivers/staging/rtl8192e/rtllib_softmac_wx.c
index 1bb6b52..740cf85 100644 (file)
--- a/drivers/staging/rtl8192e/rtllib_softmac_wx.c
+++ b/drivers/staging/rtl8192e/rtllib_softmac_wx.c
@@ -14,6 +14,8 @@
  */
 
 
+#include <linux/etherdevice.h>
+
 #include "rtllib.h"
 #include "dot11d.h"
 /* FIXME: add A freqs */
@@ -137,7 +139,6 @@ int rtllib_wx_set_wap(struct rtllib_device *ieee,
 {
 
        int ret = 0;
-       u8 zero[] = {0, 0, 0, 0, 0, 0};
        unsigned long flags;
 
        short ifup = ieee->proto_started;
@@ -157,7 +158,7 @@ int rtllib_wx_set_wap(struct rtllib_device *ieee,
                goto out;
        }
 
-       if (memcmp(temp->sa_data, zero, ETH_ALEN) == 0) {
+       if (is_zero_ether_addr(temp->sa_data)) {
                spin_lock_irqsave(&ieee->lock, flags);
                memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
                ieee->wap_set = 0;
@@ -177,7 +178,7 @@ int rtllib_wx_set_wap(struct rtllib_device *ieee,
 
        ieee->cannot_notify = false;
        memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
-       ieee->wap_set = (memcmp(temp->sa_data, zero, ETH_ALEN) != 0);
+       ieee->wap_set = !is_zero_ether_addr(temp->sa_data);
 
        spin_unlock_irqrestore(&ieee->lock, flags);