staging: ks7010: add explicit check to memcmp() calls

Calls to functions memcmp() and strcmp() are more clearly readable
when the return value is explicitly checked. i.e

if (memcmp(foo, bar, size) == 0)

Modify driver to use an explicit check on the value returned by
memcmp().

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_hostif.c

@@ -271,7 +271,7 @@ int get_ap_information(struct ks_wlan_private *priv, struct ap_info_t *ap_info,
 			memcpy(ap->rsn_ie.body, bp + 2, ap->rsn_ie.size);
 			break;
 		case 221:	/* WPA */
-			if (!memcmp(bp + 2, "\x00\x50\xf2\x01", 4)) {	/* WPA OUI check */
+			if (memcmp(bp + 2, "\x00\x50\xf2\x01", 4) == 0) {	/* WPA OUI check */
 				ap->wpa_ie.id = *bp;
 				if (*(bp + 1) <= RSN_IE_BODY_MAX) {
 					ap->wpa_ie.size = *(bp + 1);
@@ -325,7 +325,7 @@ int hostif_data_indication_wpa(struct ks_wlan_private *priv,
 	eth_proto = ntohs(eth_hdr->h_proto);
 
 	/* source address check */
-	if (!memcmp(&eth_hdr->h_source[0], &priv->eth_addr[0], ETH_ALEN))
+	if (memcmp(&eth_hdr->h_source[0], &priv->eth_addr[0], ETH_ALEN) == 0)
 		return 0;
 
 	if (eth_hdr->h_dest_snap != eth_hdr->h_source_snap) {
@@ -353,7 +353,7 @@ int hostif_data_indication_wpa(struct ks_wlan_private *priv,
 					   (uint8_t)0,	/* priority */
 					   (uint8_t *)michael_mic.Result);
 		}
-		if (memcmp(michael_mic.Result, RecvMIC, 8)) {
+		if (memcmp(michael_mic.Result, RecvMIC, 8) != 0) {
 			now = jiffies;
 			mic_failure = &priv->wpa.mic_failure;
 			/* MIC FAILURE */
@@ -421,7 +421,7 @@ void hostif_data_indication(struct ks_wlan_private *priv)
 	DPRINTK(3, "ether protocol = %04X\n", eth_proto);
 
 	/* source address check */
-	if (!memcmp(&priv->eth_addr[0], eth_hdr->h_source, ETH_ALEN)) {
+	if (memcmp(&priv->eth_addr[0], eth_hdr->h_source, ETH_ALEN) == 0) {
 		DPRINTK(1, "invalid : source is own mac address !!\n");
 		DPRINTK(1,
 			"eth_hdrernet->h_dest=%02X:%02X:%02X:%02X:%02X:%02X\n",
@@ -836,9 +836,8 @@ void hostif_scan_indication(struct ks_wlan_private *priv)
 
 	if (priv->scan_ind_count) {
 		for (i = 0; i < priv->aplist.size; i++) {	/* bssid check */
-			if (!memcmp
-			    (ap_info->bssid,
-			     priv->aplist.ap[i].bssid, ETH_ALEN)) {
+			if (memcmp(ap_info->bssid,
+				   priv->aplist.ap[i].bssid, ETH_ALEN) == 0) {
 				if (ap_info->frame_type ==
 				    FRAME_TYPE_PROBE_RESP)
 					get_ap_information(priv, ap_info,
@@ -1168,7 +1167,7 @@ int hostif_data_request(struct ks_wlan_private *priv, struct sk_buff *packet)
 
 	/* packet check */
 	eth = (struct ethhdr *)packet->data;
-	if (memcmp(&priv->eth_addr[0], eth->h_source, ETH_ALEN)) {
+	if (memcmp(&priv->eth_addr[0], eth->h_source, ETH_ALEN) != 0) {
 		DPRINTK(1, "invalid mac address !!\n");
 		DPRINTK(1, "ethernet->h_source=%pM\n", eth->h_source);
 		ret = -ENXIO;

drivers/staging/ks7010/ks_wlan_net.c

@@ -1924,9 +1924,8 @@ static int ks_wlan_set_pmksa(struct net_device *dev,
 		if (list_empty(&priv->pmklist.head)) {	/* new list */
 			for (i = 0; i < PMK_LIST_MAX; i++) {
 				pmk = &priv->pmklist.pmk[i];
-				if (!memcmp
-				    ("\x00\x00\x00\x00\x00\x00", pmk->bssid,
-				     ETH_ALEN))
+				if (memcmp("\x00\x00\x00\x00\x00\x00",
+					   pmk->bssid, ETH_ALEN) == 0)
 					break; /* loop */
 			}
 			memcpy(pmk->bssid, pmksa->bssid.sa_data, ETH_ALEN);
@@ -1938,7 +1937,7 @@ static int ks_wlan_set_pmksa(struct net_device *dev,
 		/* search cache data */
 		list_for_each(ptr, &priv->pmklist.head) {
 			pmk = list_entry(ptr, struct pmk_t, list);
-			if (!memcmp(pmksa->bssid.sa_data, pmk->bssid, ETH_ALEN)) {	/* match address! list move to head. */
+			if (memcmp(pmksa->bssid.sa_data, pmk->bssid, ETH_ALEN) == 0) {
 				memcpy(pmk->pmkid, pmksa->pmkid, IW_PMKID_LEN);
 				list_move(&pmk->list, &priv->pmklist.head);
 				break; /* list_for_each */
@@ -1950,8 +1949,8 @@ static int ks_wlan_set_pmksa(struct net_device *dev,
 		if (priv->pmklist.size < PMK_LIST_MAX) {	/* new cache data */
 			for (i = 0; i < PMK_LIST_MAX; i++) {
 				pmk = &priv->pmklist.pmk[i];
-				if (!memcmp("\x00\x00\x00\x00\x00\x00",
-					    pmk->bssid, ETH_ALEN))
+				if (memcmp("\x00\x00\x00\x00\x00\x00",
+					    pmk->bssid, ETH_ALEN) == 0)
 					break; /* loop */
 			}
 			memcpy(pmk->bssid, pmksa->bssid.sa_data, ETH_ALEN);
@@ -1973,7 +1972,7 @@ static int ks_wlan_set_pmksa(struct net_device *dev,
 		/* search cache data */
 		list_for_each(ptr, &priv->pmklist.head) {
 			pmk = list_entry(ptr, struct pmk_t, list);
-			if (!memcmp(pmksa->bssid.sa_data, pmk->bssid, ETH_ALEN)) {	/* match address! list del. */
+			if (memcmp(pmksa->bssid.sa_data, pmk->bssid, ETH_ALEN) == 0) {
 				eth_zero_addr(pmk->bssid);
 				memset(pmk->pmkid, 0, IW_PMKID_LEN);
 				list_del_init(&pmk->list);