Re: [PATCH] net: ravb_main: fix a missing check of of_get_phy_mode

[Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

On 12.03.2019 9:38, Kangjie Lu wrote:

> of_get_phy_mode may fail and return a negative error code;
> the fix checks the return value of of_get_phy_mode and
> goes to out_release if it fails.
> 
> Signed-off-by: Kangjie Lu <kjlu@umn.edu>
> ---
>   drivers/net/ethernet/renesas/ravb_main.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index d28c8f9ca55b..791b6842eb12 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
> @@ -1996,6 +1996,7 @@ static int ravb_probe(struct platform_device *pdev)
>   	int error, irq, q;
>   	struct resource *res;
>   	int i;
> +	int ret;

    There's the 'error' variable already for such things, use it.

>   
>   	if (!np) {
>   		dev_err(&pdev->dev,
> @@ -2054,7 +2055,12 @@ static int ravb_probe(struct platform_device *pdev)
>   	spin_lock_init(&priv->lock);
>   	INIT_WORK(&priv->work, ravb_tx_timeout_work);
>   
> -	priv->phy_interface = of_get_phy_mode(np);
> +	ret = of_get_phy_mode(np);
> +	if (ret < 0) {
> +		error = -EINVAL;

    We typically propagate the errors upstream...

[...]

MBR, Sergei