linux-kernel - [PATCH net] net: pasemi: fix error return code in pasemi_mac

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Message-ID: <1606903035-1838-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Wed, 2 Dec 2020 17:57:15 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <jeff@...zik.org>,
        <olof@...om.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] net: pasemi: fix error return code in pasemi_mac_open()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 72b05b9940f0 ("pasemi_mac: RX/TX ring management cleanup")
Fixes: 8d636d8bc5ff ("pasemi_mac: jumbo frame support")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/ethernet/pasemi/pasemi_mac.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c
index be66601..040a15a 100644
--- a/drivers/net/ethernet/pasemi/pasemi_mac.c
+++ b/drivers/net/ethernet/pasemi/pasemi_mac.c
@@ -1078,16 +1078,20 @@ static int pasemi_mac_open(struct net_device *dev)
 
 	mac->tx = pasemi_mac_setup_tx_resources(dev);
 
-	if (!mac->tx)
+	if (!mac->tx) {
+		ret = -ENOMEM;
 		goto out_tx_ring;
+	}
 
 	/* We might already have allocated rings in case mtu was changed
 	 * before interface was brought up.
 	 */
 	if (dev->mtu > 1500 && !mac->num_cs) {
 		pasemi_mac_setup_csrings(mac);
-		if (!mac->num_cs)
+		if (!mac->num_cs) {
+			ret = -ENOMEM;
 			goto out_tx_ring;
+		}
 	}
 
 	/* Zero out rmon counters */
-- 
2.9.5