netdev - [PATCH v2 1/2] ravb: ravb_close() always returns 0

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Date:   Sat, 29 Jan 2022 14:55:16 +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 v2 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>
---
Changes in version 2:
- removed no longer used local variable in ravb_wol_restore().

 drivers/net/ethernet/renesas/ravb_main.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index b215cde68e10..9ee246796a77 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2854,7 +2854,6 @@ static int ravb_wol_restore(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
-	int ret;
 
 	if (info->nc_queues)
 		napi_enable(&priv->napi[RAVB_NC]);
@@ -2863,9 +2862,7 @@ 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