[PATCH v3 2/7] staging: ks7010: reduce level of indentation

[Tobin C. Harding]

Code is deeply nested. One level of indentation may be removed by
inverting if statement conditional.

Invert conditional, return if new conditional evaluates to true.

Signed-off-by: Tobin C. Harding <me at tobin.cc>
---
 drivers/staging/ks7010/ks_hostif.c | 136 +++++++++++++++++++------------------
 1 file changed, 69 insertions(+), 67 deletions(-)

diff --git a/drivers/staging/ks7010/ks_hostif.c b/drivers/staging/ks7010/ks_hostif.c
index ed9969c..54ff06d 100644
--- a/drivers/staging/ks7010/ks_hostif.c
+++ b/drivers/staging/ks7010/ks_hostif.c
@@ -323,77 +323,79 @@ int hostif_data_indication_wpa(struct ks_wlan_private *priv,
 	eth_hdr = (struct ether_hdr *)(priv->rxp);
 	eth_proto = ntohs(eth_hdr->h_proto);
 
-	if (memcmp(&eth_hdr->h_source[0], &priv->eth_addr[0], ETH_ALEN)) {	/* source address check */
-		if (eth_hdr->h_dest_snap != eth_hdr->h_source_snap) {
-			DPRINTK(1, "invalid data format\n");
-			priv->nstats.rx_errors++;
-			return -EINVAL;
+	/* source address check */
+	if (!memcmp(&eth_hdr->h_source[0], &priv->eth_addr[0], ETH_ALEN))
+		return 0;
+
+	if (eth_hdr->h_dest_snap != eth_hdr->h_source_snap) {
+		DPRINTK(1, "invalid data format\n");
+		priv->nstats.rx_errors++;
+		return -EINVAL;
+	}
+	if (((auth_type == TYPE_PMK1
+				&& priv->wpa.pairwise_suite ==
+				IW_AUTH_CIPHER_TKIP) || (auth_type == TYPE_GMK1
+							&& priv->wpa.
+							group_suite ==
+							IW_AUTH_CIPHER_TKIP)
+			|| (auth_type == TYPE_GMK2
+				&& priv->wpa.group_suite ==
+				IW_AUTH_CIPHER_TKIP))
+		&& priv->wpa.key[auth_type - 1].key_len) {
+		DPRINTK(4, "TKIP: protocol=%04X: size=%u\n",
+			eth_proto, priv->rx_size);
+		/* MIC save */
+		memcpy(&RecvMIC[0],
+			(priv->rxp) + ((priv->rx_size) - 8), 8);
+		priv->rx_size = priv->rx_size - 8;
+		if (auth_type > 0 && auth_type < 4) {	/* auth_type check */
+			MichaelMICFunction(&michel_mic, (uint8_t *)priv->wpa.key[auth_type - 1].rx_mic_key, (uint8_t *)priv->rxp, (int)priv->rx_size, (uint8_t)0,	/* priority */
+					(uint8_t *)michel_mic.Result);
 		}
-		if (((auth_type == TYPE_PMK1
-					&& priv->wpa.pairwise_suite ==
-					IW_AUTH_CIPHER_TKIP) || (auth_type == TYPE_GMK1
-								&& priv->wpa.
-								group_suite ==
-								IW_AUTH_CIPHER_TKIP)
-				|| (auth_type == TYPE_GMK2
-					&& priv->wpa.group_suite ==
-					IW_AUTH_CIPHER_TKIP))
-			&& priv->wpa.key[auth_type - 1].key_len) {
-			DPRINTK(4, "TKIP: protocol=%04X: size=%u\n",
-				eth_proto, priv->rx_size);
-			/* MIC save */
-			memcpy(&RecvMIC[0],
-				(priv->rxp) + ((priv->rx_size) - 8), 8);
-			priv->rx_size = priv->rx_size - 8;
-			if (auth_type > 0 && auth_type < 4) {	/* auth_type check */
-				MichaelMICFunction(&michel_mic, (uint8_t *)priv->wpa.key[auth_type - 1].rx_mic_key, (uint8_t *)priv->rxp, (int)priv->rx_size, (uint8_t)0,	/* priority */
-						(uint8_t *)michel_mic.Result);
+		if (memcmp(michel_mic.Result, RecvMIC, 8)) {
+			now = jiffies;
+			mic_failure = &priv->wpa.mic_failure;
+			/* MIC FAILURE */
+			if (mic_failure->last_failure_time &&
+				(now -
+					mic_failure->last_failure_time) /
+				HZ >= 60) {
+				mic_failure->failure = 0;
 			}
-			if (memcmp(michel_mic.Result, RecvMIC, 8)) {
-				now = jiffies;
-				mic_failure = &priv->wpa.mic_failure;
-				/* MIC FAILURE */
-				if (mic_failure->last_failure_time &&
-					(now -
-						mic_failure->last_failure_time) /
-					HZ >= 60) {
-					mic_failure->failure = 0;
-				}
-				DPRINTK(4, "MIC FAILURE\n");
-				if (mic_failure->failure == 0) {
-					mic_failure->failure = 1;
-					mic_failure->counter = 0;
-				} else if (mic_failure->failure == 1) {
-					mic_failure->failure = 2;
+			DPRINTK(4, "MIC FAILURE\n");
+			if (mic_failure->failure == 0) {
+				mic_failure->failure = 1;
+				mic_failure->counter = 0;
+			} else if (mic_failure->failure == 1) {
+				mic_failure->failure = 2;
+				mic_failure->counter =
+					(uint16_t)((now -
+							mic_failure->
+							last_failure_time)
+						/ HZ);
+				if (!mic_failure->counter)	/* mic_failure counter value range 1-60 */
 					mic_failure->counter =
-						(uint16_t)((now -
-								mic_failure->
-								last_failure_time)
-							/ HZ);
-					if (!mic_failure->counter)	/* mic_failure counter value range 1-60 */
-						mic_failure->counter =
-							1;
-				}
-				priv->wpa.mic_failure.
-					last_failure_time = now;
-				/*  needed parameters: count, keyid, key type, TSC */
-				sprintf(buf,
-					"MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr="
-					"%pM)",
-					auth_type - 1,
-					eth_hdr->
-					h_dest[0] & 0x01 ? "broad" :
-					"uni", eth_hdr->h_source);
-				memset(&wrqu, 0, sizeof(wrqu));
-				wrqu.data.length = strlen(buf);
-				DPRINTK(4,
-					"IWEVENT:MICHAELMICFAILURE\n");
-				wireless_send_event(priv->net_dev,
-						IWEVCUSTOM, &wrqu,
-						buf);
-				return -EINVAL;
-
+						1;
 			}
+			priv->wpa.mic_failure.
+				last_failure_time = now;
+			/*  needed parameters: count, keyid, key type, TSC */
+			sprintf(buf,
+				"MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr="
+				"%pM)",
+				auth_type - 1,
+				eth_hdr->
+				h_dest[0] & 0x01 ? "broad" :
+				"uni", eth_hdr->h_source);
+			memset(&wrqu, 0, sizeof(wrqu));
+			wrqu.data.length = strlen(buf);
+			DPRINTK(4,
+				"IWEVENT:MICHAELMICFAILURE\n");
+			wireless_send_event(priv->net_dev,
+					IWEVCUSTOM, &wrqu,
+					buf);
+			return -EINVAL;
+
 		}
 	}
 	return 0;
-- 
2.7.4