linux-kernel - [PATCH net-next] net: moxa: Use devm_platform_get_and_ioremap

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Message-ID: <20210607150259.4013977-1-yangyingliang@huawei.com>
Date:   Mon, 7 Jun 2021 23:02:59 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <kuba@...nel.org>
Subject: [PATCH net-next] net: moxa: Use devm_platform_get_and_ioremap_resource()

Use devm_platform_get_and_ioremap_resource() to simplify
code and avoid a null-ptr-deref by checking 'res' in it.

Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/net/ethernet/moxa/moxart_ether.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index b85733942053..5249b64f4fc5 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -481,13 +481,12 @@ static int moxart_mac_probe(struct platform_device *pdev)
 	priv->ndev = ndev;
 	priv->pdev = pdev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ndev->base_addr = res->start;
-	priv->base = devm_ioremap_resource(p_dev, res);
+	priv->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(priv->base)) {
 		ret = PTR_ERR(priv->base);
 		goto init_fail;
 	}
+	ndev->base_addr = res->start;
 
 	spin_lock_init(&priv->txlock);
 
-- 
2.25.1