[PATCH 07/12] staging: ks7010: reduce level of indentation

[Tobin C. Harding]

Indentation may be reduced by inverting if statement conditional and
returning.

Invert conditional. Return if new conditional evaluates to true. Do
not alter program logic. Reduce by one the level of indentation in
subsequent code.

Signed-off-by: Tobin C. Harding <me at tobin.cc>
---
 drivers/staging/ks7010/ks_hostif.c | 134 +++++++++++++++++++------------------
 1 file changed, 68 insertions(+), 66 deletions(-)

diff --git a/drivers/staging/ks7010/ks_hostif.c b/drivers/staging/ks7010/ks_hostif.c
index 1da7b5a..edeefea 100644
--- a/drivers/staging/ks7010/ks_hostif.c
+++ b/drivers/staging/ks7010/ks_hostif.c
@@ -322,76 +322,78 @@ int hostif_data_indication_wpa(struct ks_wlan_private *priv, unsigned int auth_t
 	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, (u8 *)priv->wpa.key[auth_type - 1].rx_mic_key, (u8 *)priv->rxp, (int)priv->rx_size, (u8)0,	/* priority */
+					(u8 *)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, (u8 *)priv->wpa.key[auth_type - 1].rx_mic_key, (u8 *)priv->rxp, (int)priv->rx_size, (u8)0,	/* priority */
-						(u8 *)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 =
+					(u16)((now -
+							mic_failure->
+							last_failure_time)
+						/ HZ);
+				if (!mic_failure->counter)	/* mic_failure counter value range 1-60 */
 					mic_failure->counter =
-						(u16)((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