linux-kernel - Re: [PATCH net] net: marvell: prestera: fix error return code in prestera_pci

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Date:   Fri, 13 Nov 2020 14:50:03 +0200
From:   Vadym Kochan <vadym.kochan@...ision.eu>
To:     Wang Hai <wanghai38@...wei.com>
Cc:     davem@...emloft.net, kuba@...nel.org, oleksandr.mazur@...ision.eu,
        vadym.kochan@...ision.eu, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: marvell: prestera: fix error return code in prestera_pci_probe()


Hi Wang,

Wang Hai <wanghai38@...wei.com> writes:

> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
>
> Fixes: 4c2703dfd7fa ("net: marvell: prestera: Add PCI interface support")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Wang Hai <wanghai38@...wei.com>
> ---
>  drivers/net/ethernet/marvell/prestera/prestera_pci.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
> index 1b97adae542e..be5677623455 100644
> --- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c
> +++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
> @@ -676,7 +676,8 @@ static int prestera_pci_probe(struct pci_dev *pdev,
>  	if (err)
>  		return err;
>  
> -	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(30))) {
> +	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(30));
> +	if (err) {
>  		dev_err(&pdev->dev, "fail to set DMA mask\n");
>  		goto err_dma_mask;
>  	}
> @@ -702,8 +703,10 @@ static int prestera_pci_probe(struct pci_dev *pdev,
>  	dev_info(fw->dev.dev, "Prestera FW is ready\n");
>  
>  	fw->wq = alloc_workqueue("prestera_fw_wq", WQ_HIGHPRI, 1);
> -	if (!fw->wq)
> +	if (!fw->wq) {
> +		err = -ENOMEM;
>  		goto err_wq_alloc;
> +	}
>  
>  	INIT_WORK(&fw->evt_work, prestera_fw_evt_work_fn);

Thank you!

Just in case it is needed:

Reviewed-by: Vadym Kochan <vadym.kochan@...ision.eu>
Acked-by: Vadym Kochan <vadym.kochan@...ision.eu>