linux-kernel - [PATCH net] net: b44: fix error return code in b44_init

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Message-ID: <1605582131-36735-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Tue, 17 Nov 2020 11:02:11 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     <michael.chan@...adcom.com>, <davem@...emloft.net>,
        <kuba@...nel.org>, <Larry.Finger@...inger.net>,
        <akpm@...ux-foundation.org>, <fujita.tomonori@....ntt.co.jp>,
        <linville@...driver.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] net: b44: fix error return code in b44_init_one()

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

Fixes: 39a6f4bce6b4 ("b44: replace the ssb_dma API with the generic DMA API")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/ethernet/broadcom/b44.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c
index 74c1778..b455b60 100644
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -2383,7 +2383,8 @@ static int b44_init_one(struct ssb_device *sdev,
 		goto err_out_free_dev;
 	}
 
-	if (dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30))) {
+	err = dma_set_mask_and_coherent(sdev->dma_dev, DMA_BIT_MASK(30));
+	if (err) {
 		dev_err(sdev->dev,
 			"Required 30BIT DMA mask unsupported by the system\n");
 		goto err_out_powerdown;
-- 
2.9.5