linux-kernel - [PATCH] mac80211: Remove redundant assignment to ret

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Date:   Fri, 30 Apr 2021 17:21:23 +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] mac80211: Remove redundant assignment to ret

Variable 'ret' is set to -ENODEV 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.

Clean up the following clang-analyzer warning:

net/mac80211/debugfs_netdev.c:60:2: warning: Value stored to 'ret' 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/mac80211/debugfs_netdev.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 0ad3860..f7aac89 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -57,7 +57,6 @@ static ssize_t ieee80211_if_write(
 		return -EFAULT;
 	buf[count] = '\0';
 
-	ret = -ENODEV;
 	rtnl_lock();
 	ret = (*write)(sdata, buf, count);
 	rtnl_unlock();
-- 
1.8.3.1