linux-kernel - [PATCH] staging: rtl8192u: remove redundant null check on array alg

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Message-Id: <20170209110643.22590-1-colin.king@canonical.com>
Date:   Thu,  9 Feb 2017 11:06:43 +0000
From:   Colin King <colin.king@...onical.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        simran singhal <singhalsimran0@...il.com>,
        Bhumika Goyal <bhumirks@...il.com>,
        Binoy Jayan <binoy.jayan@...aro.org>,
        "David S . Miller" <davem@...emloft.net>,
        Florian Westphal <fw@...len.de>,
        Amitoj Kaur Chawla <amitoj1606@...il.com>,
        Janani Ravichandran <janani.rvchndrn@...il.com>,
        Baoyou Xie <baoyou.xie@...aro.org>,
        Bhaktipriya Shridhar <bhaktipriya96@...il.com>,
        devel@...verdev.osuosl.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rtl8192u: remove redundant null check on array alg

From: Colin Ian King <colin.king@...onical.com>

u.crypt.alg is an array of u8 integers and hence the null check on
this array is redundant and can be removed.

Detected with CoverityScan, CID#143214 ("Array compared against 0")

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 .../staging/rtl8192u/ieee80211/ieee80211_softmac.c | 32 ++++++++++------------
 1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
index 844e257..02b9f7a 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
@@ -3056,23 +3056,21 @@ static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
 	} else
 		sec.flags &= ~SEC_ACTIVE_KEY;
 
-	if (param->u.crypt.alg != NULL) {
-		memcpy(sec.keys[param->u.crypt.idx],
-		       param->u.crypt.key,
-		       param->u.crypt.key_len);
-		sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
-		sec.flags |= (1 << param->u.crypt.idx);
-
-		if (strcmp(param->u.crypt.alg, "WEP") == 0) {
-			sec.flags |= SEC_LEVEL;
-			sec.level = SEC_LEVEL_1;
-		} else if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
-			sec.flags |= SEC_LEVEL;
-			sec.level = SEC_LEVEL_2;
-		} else if (strcmp(param->u.crypt.alg, "CCMP") == 0) {
-			sec.flags |= SEC_LEVEL;
-			sec.level = SEC_LEVEL_3;
-		}
+	memcpy(sec.keys[param->u.crypt.idx],
+	       param->u.crypt.key,
+	       param->u.crypt.key_len);
+	sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
+	sec.flags |= (1 << param->u.crypt.idx);
+
+	if (strcmp(param->u.crypt.alg, "WEP") == 0) {
+		sec.flags |= SEC_LEVEL;
+		sec.level = SEC_LEVEL_1;
+	} else if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
+		sec.flags |= SEC_LEVEL;
+		sec.level = SEC_LEVEL_2;
+	} else if (strcmp(param->u.crypt.alg, "CCMP") == 0) {
+		sec.flags |= SEC_LEVEL;
+		sec.level = SEC_LEVEL_3;
 	}
  done:
 	if (ieee->set_security)
-- 
2.10.2