staging: ks7010: reduce level of indentation

Checkpatch emits WARNING: Too many leading tabs - consider code
refactoring. One level of indentation may be removed by inverting an
if statement conditional (and returning if new conditional evaluates
to true). Code contains switch statement that also contains multiple
layers of indentation. Indentation may be reduced by breaking out of
the case statement in multiple places instead of guarding code with
if/else statements.

Invert conditional. Return original error code if new conditional
evaluates to true. Break out of case blocks instead of using
if/else. Do not modify program logic.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan_net.c

@@ -1890,72 +1890,71 @@ static int ks_wlan_set_encode_ext(struct net_device *dev,
 	if (dwrq->flags & IW_ENCODE_DISABLED)
 		priv->wpa.key[index].key_len = 0;
 
-	if (enc) {
-		priv->wpa.key[index].ext_flags = enc->ext_flags;
-		if (enc->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
-			priv->wpa.txkey = index;
-			commit |= SME_WEP_INDEX;
-		} else if (enc->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
-			memcpy(&priv->wpa.key[index].rx_seq[0],
-			       enc->rx_seq, IW_ENCODE_SEQ_MAX_SIZE);
-		}
+	if (!enc)
+		return -EINVAL;
 
-		memcpy(&priv->wpa.key[index].addr.sa_data[0],
-		       &enc->addr.sa_data[0], ETH_ALEN);
+	priv->wpa.key[index].ext_flags = enc->ext_flags;
+	if (enc->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
+		priv->wpa.txkey = index;
+		commit |= SME_WEP_INDEX;
+	} else if (enc->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
+		memcpy(&priv->wpa.key[index].rx_seq[0],
+			enc->rx_seq, IW_ENCODE_SEQ_MAX_SIZE);
+	}
 
-		switch (enc->alg) {
-		case IW_ENCODE_ALG_NONE:
-			if (priv->reg.privacy_invoked) {
-				priv->reg.privacy_invoked = 0x00;
-				commit |= SME_WEP_FLAG;
-			}
-			priv->wpa.key[index].key_len = 0;
+	memcpy(&priv->wpa.key[index].addr.sa_data[0],
+		&enc->addr.sa_data[0], ETH_ALEN);
 
-			break;
-		case IW_ENCODE_ALG_WEP:
-		case IW_ENCODE_ALG_CCMP:
-			if (!priv->reg.privacy_invoked) {
-				priv->reg.privacy_invoked = 0x01;
-				commit |= SME_WEP_FLAG;
-			}
-			if (enc->key_len) {
-				memcpy(&priv->wpa.key[index].key_val[0],
-				       &enc->key[0], enc->key_len);
-				priv->wpa.key[index].key_len = enc->key_len;
-				commit |= (SME_WEP_VAL1 << index);
-			}
-			break;
-		case IW_ENCODE_ALG_TKIP:
-			if (!priv->reg.privacy_invoked) {
-				priv->reg.privacy_invoked = 0x01;
-				commit |= SME_WEP_FLAG;
-			}
-			if (enc->key_len == 32) {
-				memcpy(&priv->wpa.key[index].key_val[0],
-				       &enc->key[0], enc->key_len - 16);
-				priv->wpa.key[index].key_len =
-				    enc->key_len - 16;
-				if (priv->wpa.key_mgmt_suite == 4) {	/* WPA_NONE */
-					memcpy(&priv->wpa.key[index].
-					       tx_mic_key[0], &enc->key[16], 8);
-					memcpy(&priv->wpa.key[index].
-					       rx_mic_key[0], &enc->key[16], 8);
-				} else {
-					memcpy(&priv->wpa.key[index].
-					       tx_mic_key[0], &enc->key[16], 8);
-					memcpy(&priv->wpa.key[index].
-					       rx_mic_key[0], &enc->key[24], 8);
-				}
-				commit |= (SME_WEP_VAL1 << index);
+	switch (enc->alg) {
+	case IW_ENCODE_ALG_NONE:
+		if (priv->reg.privacy_invoked) {
+			priv->reg.privacy_invoked = 0x00;
+			commit |= SME_WEP_FLAG;
+		}
+		priv->wpa.key[index].key_len = 0;
+
+		break;
+	case IW_ENCODE_ALG_WEP:
+	case IW_ENCODE_ALG_CCMP:
+		if (!priv->reg.privacy_invoked) {
+			priv->reg.privacy_invoked = 0x01;
+			commit |= SME_WEP_FLAG;
+		}
+		if (enc->key_len) {
+			memcpy(&priv->wpa.key[index].key_val[0],
+				&enc->key[0], enc->key_len);
+			priv->wpa.key[index].key_len = enc->key_len;
+			commit |= (SME_WEP_VAL1 << index);
+		}
+		break;
+	case IW_ENCODE_ALG_TKIP:
+		if (!priv->reg.privacy_invoked) {
+			priv->reg.privacy_invoked = 0x01;
+			commit |= SME_WEP_FLAG;
+		}
+		if (enc->key_len == 32) {
+			memcpy(&priv->wpa.key[index].key_val[0],
+				&enc->key[0], enc->key_len - 16);
+			priv->wpa.key[index].key_len =
+				enc->key_len - 16;
+			if (priv->wpa.key_mgmt_suite == 4) {	/* WPA_NONE */
+				memcpy(&priv->wpa.key[index].
+					tx_mic_key[0], &enc->key[16], 8);
+				memcpy(&priv->wpa.key[index].
+					rx_mic_key[0], &enc->key[16], 8);
+			} else {
+				memcpy(&priv->wpa.key[index].
+					tx_mic_key[0], &enc->key[16], 8);
+				memcpy(&priv->wpa.key[index].
+					rx_mic_key[0], &enc->key[24], 8);
 			}
-			break;
-		default:
-			return -EINVAL;
+			commit |= (SME_WEP_VAL1 << index);
 		}
-		priv->wpa.key[index].alg = enc->alg;
-	} else {
+		break;
+	default:
 		return -EINVAL;
 	}
+	priv->wpa.key[index].alg = enc->alg;
 
 	if (commit) {
 		if (commit & SME_WEP_INDEX)
@@ -2025,51 +2024,53 @@ static int ks_wlan_set_pmksa(struct net_device *dev,
 				if (!memcmp
 				    ("\x00\x00\x00\x00\x00\x00", pmk->bssid,
 				     ETH_ALEN))
-					break;
+					break; /* loop */
 			}
 			memcpy(pmk->bssid, pmksa->bssid.sa_data, ETH_ALEN);
 			memcpy(pmk->pmkid, pmksa->pmkid, IW_PMKID_LEN);
 			list_add(&pmk->list, &priv->pmklist.head);
 			priv->pmklist.size++;
-		} else {	/* 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. */
-					memcpy(pmk->pmkid, pmksa->pmkid,
-					       IW_PMKID_LEN);
-					list_move(&pmk->list,
-						  &priv->pmklist.head);
-					break;
-				}
+			break;	/* case */
+		}
+		/* 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. */
+				memcpy(pmk->pmkid, pmksa->pmkid,
+					IW_PMKID_LEN);
+				list_move(&pmk->list,
+					&priv->pmklist.head);
+				break; /* list_for_each */
 			}
-			if (ptr == &priv->pmklist.head) {	/* not find address. */
-				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))
-							break;
-					}
-					memcpy(pmk->bssid, pmksa->bssid.sa_data,
-					       ETH_ALEN);
-					memcpy(pmk->pmkid, pmksa->pmkid,
-					       IW_PMKID_LEN);
-					list_add(&pmk->list,
-						 &priv->pmklist.head);
-					priv->pmklist.size++;
-				} else {	/* overwrite old cache data */
-					pmk =
-					    list_entry(priv->pmklist.head.prev,
-						       struct pmk_t, list);
-					memcpy(pmk->bssid, pmksa->bssid.sa_data,
-					       ETH_ALEN);
-					memcpy(pmk->pmkid, pmksa->pmkid,
-					       IW_PMKID_LEN);
-					list_move(&pmk->list,
-						  &priv->pmklist.head);
-				}
+		}
+		if (ptr != &priv->pmklist.head)	/* not find address. */
+			break;	/* case */
+
+		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))
+					break;
 			}
+			memcpy(pmk->bssid, pmksa->bssid.sa_data,
+				ETH_ALEN);
+			memcpy(pmk->pmkid, pmksa->pmkid,
+				IW_PMKID_LEN);
+			list_add(&pmk->list,
+				&priv->pmklist.head);
+			priv->pmklist.size++;
+		} else {	/* overwrite old cache data */
+			pmk =
+				list_entry(priv->pmklist.head.prev,
+					struct pmk_t, list);
+			memcpy(pmk->bssid, pmksa->bssid.sa_data,
+				ETH_ALEN);
+			memcpy(pmk->pmkid, pmksa->pmkid,
+				IW_PMKID_LEN);
+			list_move(&pmk->list,
+				&priv->pmklist.head);
 		}
 		break;
 	case IW_PMKSA_REMOVE: