netdev - [PATCH net] ethernet: tundra: free irq when alloc ring failed in tsi108

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Date:   Wed, 9 Nov 2022 12:40:16 +0800
From:   Zhengchao Shao <shaozhengchao@...wei.com>
To:     <netdev@...r.kernel.org>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>
CC:     <u.kleine-koenig@...gutronix.de>, <mkl@...gutronix.de>,
        <tie-fei.zang@...escale.com>, <akpm@...l.org>,
        <Alexandre.Bounine@...dra.com>, <jeff@...zik.org>,
        <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
        <shaozhengchao@...wei.com>
Subject: [PATCH net] ethernet: tundra: free irq when alloc ring failed in tsi108_open()

When alloc tx/rx ring failed in tsi108_open(), it doesn't free irq. Fix
it.

Fixes: 5e123b844a1c ("[PATCH] Add tsi108/9 On Chip Ethernet device driver support")
Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
---
v2: move free_irq to error handling path and modify fixes tag
---
 drivers/net/ethernet/tundra/tsi108_eth.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/tundra/tsi108_eth.c b/drivers/net/ethernet/tundra/tsi108_eth.c
index 2cd2afc3fff0..d09d352e1c0a 100644
--- a/drivers/net/ethernet/tundra/tsi108_eth.c
+++ b/drivers/net/ethernet/tundra/tsi108_eth.c
@@ -1290,12 +1290,15 @@ static int tsi108_open(struct net_device *dev)
 
 	data->rxring = dma_alloc_coherent(&data->pdev->dev, rxring_size,
 					  &data->rxdma, GFP_KERNEL);
-	if (!data->rxring)
+	if (!data->rxring) {
+		free_irq(data->irq_num, dev);
 		return -ENOMEM;
+	}
 
 	data->txring = dma_alloc_coherent(&data->pdev->dev, txring_size,
 					  &data->txdma, GFP_KERNEL);
 	if (!data->txring) {
+		free_irq(data->irq_num, dev);
 		dma_free_coherent(&data->pdev->dev, rxring_size, data->rxring,
 				    data->rxdma);
 		return -ENOMEM;
-- 
2.17.1