From ad93cc9f15a78a7cc6532db2a0cd0dd8d4311de6 Mon Sep 17 00:00:00 2001
From: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Date: Wed, 22 Mar 2017 00:53:16 +0200
Subject: [PATCH] staging: rtl8712: Restructure code for clarity

Invert if statements to be able to return immediately in case of error,
and to avoid additional else branch.

Improve layout of function since there is more horizontal space now.

This was found using the following Coccinelle script:

@disable neg_if@
expression e,E;
statement S;
@@

*if (e)
    S
    else { return -E; }

    @disable neg_if@
    expression e,E;
    statement S;
    identifier l;
    @@

    *if
(e)
    S
    else
{ rc = -E; goto l; }

Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/rtl8712/rtl871x_ioctl_linux.c | 69 +++++++++----------
 1 file changed, 33 insertions(+), 36 deletions(-)

diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
index 38c17030eff0..3d6e818a7cc2 100644
--- a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
+++ b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
@@ -1406,44 +1406,41 @@ static int r8711_wx_get_rate(struct net_device *dev,
 	u16 mcs_rate = 0;
 
 	i = 0;
-	if (check_fwstate(pmlmepriv, _FW_LINKED | WIFI_ADHOC_MASTER_STATE)) {
-		p = r8712_get_ie(&pcur_bss->IEs[12],
-				 _HT_CAPABILITY_IE_, &ht_ielen,
-		    pcur_bss->IELength - 12);
-		if (p && ht_ielen > 0) {
-			ht_cap = true;
-			pht_capie = (struct ieee80211_ht_cap *)(p + 2);
-			memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
-			bw_40MHz = (le16_to_cpu(pht_capie->cap_info) &
-				    IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;
-			short_GI = (le16_to_cpu(pht_capie->cap_info) &
-				    (IEEE80211_HT_CAP_SGI_20 |
-				    IEEE80211_HT_CAP_SGI_40)) ? 1 : 0;
-		}
-		while ((pcur_bss->rates[i] != 0) &&
-			(pcur_bss->rates[i] != 0xFF)) {
-			rate = pcur_bss->rates[i] & 0x7F;
-			if (rate > max_rate)
-				max_rate = rate;
-			wrqu->bitrate.fixed = 0;	/* no auto select */
-			wrqu->bitrate.value = rate * 500000;
-			i++;
-		}
-		if (ht_cap) {
-			if (mcs_rate & 0x8000 /* MCS15 */
-				&&
-				rf_type == RTL8712_RF_2T2R)
-				max_rate = (bw_40MHz) ? ((short_GI) ? 300 :
-					    270) : ((short_GI) ? 144 : 130);
-			else /* default MCS7 */
-				max_rate = (bw_40MHz) ? ((short_GI) ? 150 :
-					    135) : ((short_GI) ? 72 : 65);
-			max_rate *= 2; /* Mbps/2 */
-		}
-		wrqu->bitrate.value = max_rate * 500000;
-	} else {
+	if (!check_fwstate(pmlmepriv, _FW_LINKED | WIFI_ADHOC_MASTER_STATE))
 		return -ENOLINK;
+	p = r8712_get_ie(&pcur_bss->IEs[12], _HT_CAPABILITY_IE_, &ht_ielen,
+			 pcur_bss->IELength - 12);
+	if (p && ht_ielen > 0) {
+		ht_cap = true;
+		pht_capie = (struct ieee80211_ht_cap *)(p + 2);
+		memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
+		bw_40MHz = (le16_to_cpu(pht_capie->cap_info) &
+			    IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;
+		short_GI = (le16_to_cpu(pht_capie->cap_info) &
+			    (IEEE80211_HT_CAP_SGI_20 |
+			    IEEE80211_HT_CAP_SGI_40)) ? 1 : 0;
 	}
+	while ((pcur_bss->rates[i] != 0) &&
+	       (pcur_bss->rates[i] != 0xFF)) {
+		rate = pcur_bss->rates[i] & 0x7F;
+		if (rate > max_rate)
+			max_rate = rate;
+		wrqu->bitrate.fixed = 0;	/* no auto select */
+		wrqu->bitrate.value = rate * 500000;
+		i++;
+	}
+	if (ht_cap) {
+		if (mcs_rate & 0x8000 /* MCS15 */
+		    &&
+		    rf_type == RTL8712_RF_2T2R)
+			max_rate = (bw_40MHz) ? ((short_GI) ? 300 : 270) :
+			((short_GI) ? 144 : 130);
+		else /* default MCS7 */
+			max_rate = (bw_40MHz) ? ((short_GI) ? 150 : 135) :
+			((short_GI) ? 72 : 65);
+		max_rate *= 2; /* Mbps/2 */
+	}
+	wrqu->bitrate.value = max_rate * 500000;
 	return 0;
 }