linux-kernel - [PATCH][V2] net: dsa: b53: remove redundant null check on dev

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Date:   Tue, 15 Jun 2021 10:05:16 +0100
From:   Colin King <colin.king@...onical.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][V2] net: dsa: b53: remove redundant null check on dev

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

The pointer dev can never be null, the null check is redundant
and can be removed. Cleans up a static analysis warning that
pointer priv is dereferencing dev before dev is being null
checked.

Addresses-Coverity: ("Dereference before null check")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---

V2: Remove null check rather than add b53_srab_intr_set call into a null
    check statement block.
    Rephrase commit Subject to reflect the change in the fix.

---
 drivers/net/dsa/b53/b53_srab.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c
index aaa12d73784e..3f4249de70c5 100644
--- a/drivers/net/dsa/b53/b53_srab.c
+++ b/drivers/net/dsa/b53/b53_srab.c
@@ -632,8 +632,7 @@ static int b53_srab_remove(struct platform_device *pdev)
 	struct b53_srab_priv *priv = dev->priv;
 
 	b53_srab_intr_set(priv, false);
-	if (dev)
-		b53_switch_remove(dev);
+	b53_switch_remove(dev);
 
 	return 0;
 }
-- 
2.31.1