netdev - [PATCH] net: cxgb3: add error handling for some functions

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Message-Id: <1528706547-35243-1-git-send-email-jiazhouyang09@gmail.com>
Date:   Mon, 11 Jun 2018 16:42:26 +0800
From:   Zhouyang Jia <jiazhouyang09@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Zhouyang Jia <jiazhouyang09@...il.com>,
        Santosh Raspatur <santosh@...lsio.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net: cxgb3: add error handling for some functions

When sysfs_create_group or alloc_skb fails, the lack of error-handling
code may cause unexpected results.

This patch adds error-handling code after the functions.

Signed-off-by: Zhouyang Jia <jiazhouyang09@...il.com>
---
 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index 2edfdbd..bb51b7e 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -545,6 +545,8 @@ static int init_tp_parity(struct adapter *adap)
 	if (skb == adap->nofail_skb) {
 		i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
 		adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL);
+		if (!adap->nofail_skb)
+			goto alloc_skb_fail;
 	}
 
 	t3_tp_set_offload_mode(adap, 0);
@@ -3362,6 +3364,10 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	err = sysfs_create_group(&adapter->port[0]->dev.kobj,
 				 &cxgb3_attr_group);
+	if (err) {
+		dev_err(&pdev->dev, "cannot create sysfs group\n");
+		goto out_free_dev;
+	}
 
 	print_port_info(adapter, ai);
 	return 0;
-- 
2.7.4