[U-Boot] [PATCH] net: eth-uclass: call stop only for active devices

[Simon Glass]

On Wed, 20 Feb 2019 at 05:32, Keerthy <j-keerthy at ti.com> wrote:
>
> Currently stop is being called unconditionally without even
> checking if start is called. In case of multiple instances eth
> being present many devices might just be initialized without
> a start call in such cases stop might lead unpredictable behaviors
> including aborts and crashes. Hence add a check before calling stop.
>
> Signed-off-by: Keerthy <j-keerthy at ti.com>
> ---
>  net/eth-uclass.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

>
> diff --git a/net/eth-uclass.c b/net/eth-uclass.c
> index 2ef20df192..26f7e0b8cd 100644
> --- a/net/eth-uclass.c
> +++ b/net/eth-uclass.c
> @@ -531,7 +531,8 @@ static int eth_pre_remove(struct udevice *dev)
>  {
>         struct eth_pdata *pdata = dev->platdata;
>
> -       eth_get_ops(dev)->stop(dev);
> +       if (eth_is_active(dev))
> +               eth_get_ops(dev)->stop(dev);
>
>         /* clear the MAC address */
>         memset(pdata->enetaddr, 0, ARP_HLEN);
> --
> 2.17.1
>
Reviewed-by: Simon Glass <sjg at chromium.org>