linux-kernel - [PATCH] net: wireless: wext_compat.c: Remove redundant assignment to ps

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Date:   Wed, 28 Apr 2021 17:59:05 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     johannes@...solutions.net
Cc:     davem@...emloft.net, kuba@...nel.org, nathan@...nel.org,
        ndesaulniers@...gle.com, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH] net: wireless: wext_compat.c: Remove redundant assignment to ps

Variable 'ps' is set to wdev->ps but this value is never read as it is
overwritten with a new value later on, hence it is a redundant
assignment and can be removed.

Cleans up the following clang-analyzer warning:

net/wireless/wext-compat.c:1170:7: warning: Value stored to 'ps' during
its initialization is never read [clang-analyzer-deadcode.DeadStores]

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---
 net/wireless/wext-compat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index a8320dc..50a2330 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1167,7 +1167,7 @@ static int cfg80211_wext_siwpower(struct net_device *dev,
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
-	bool ps = wdev->ps;
+	bool ps;
 	int timeout = wdev->ps_timeout;
 	int err;
 
-- 
1.8.3.1