netdev - [PATCH 1/2] ravb: ravb_close() always returns 0

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Date:   Fri, 28 Jan 2022 23:38:37 +0300
From:   Sergey Shtylyov <s.shtylyov@....ru>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     <linux-renesas-soc@...r.kernel.org>
Subject: [PATCH 1/2] ravb: ravb_close() always returns 0

ravb_close() always returns 0, hence the check in ravb_wol_restore() is
pointless (however, we cannot change the prototype of ravb_close() as it
implements the driver's ndo_stop() method).

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.

Signed-off-by: Sergey Shtylyov <s.shtylyov@....ru>
---
 drivers/net/ethernet/renesas/ravb_main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index b215cde68e10..02fa8cfc2b7b 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2863,9 +2863,7 @@ static int ravb_wol_restore(struct net_device *ndev)
 	/* Disable MagicPacket */
 	ravb_modify(ndev, ECMR, ECMR_MPDE, 0);
 
-	ret = ravb_close(ndev);
-	if (ret < 0)
-		return ret;
+	ravb_close(ndev);
 
 	return disable_irq_wake(priv->emac_irq);
 }
-- 
2.26.3