Re: [PATCH net-next] net: gianfar: fix NVMEM mac address

[Rosen Penev]

On Mon, Sep 9, 2024 at 1:55 AM Simon Horman <horms@xxxxxxxxxx> wrote:
>
> On Sun, Sep 08, 2024 at 02:35:54PM -0700, Rosen Penev wrote:
> > If nvmem loads after the ethernet driver, mac address assignments will
> > not take effect. of_get_ethdev_address returns EPROBE_DEFER in such a
> > case so we need to handle that to avoid eth_hw_addr_random.
> >
> > Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
> > ---
> >  drivers/net/ethernet/freescale/gianfar.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
> > index 634049c83ebe..9755ec947029 100644
> > --- a/drivers/net/ethernet/freescale/gianfar.c
> > +++ b/drivers/net/ethernet/freescale/gianfar.c
> > @@ -716,6 +716,8 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
> >               priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
> >
> >       err = of_get_ethdev_address(np, dev);
> > +     if (err == -EPROBE_DEFER)
> > +             return err;
>
> To avoid leaking resources, I think this should be:
>
>                 goto err_grp_init;
will do in v2. Unfortunately net-next closes today AFAIK.
>
> Flagged by Smatch.
>
> >       if (err) {
> >               eth_hw_addr_random(dev);
> >               dev_info(&ofdev->dev, "Using random MAC address: %pM\n", dev->dev_addr);
>
> --
> pw-bot: cr