netdev - Re: [RFC PATCH] net: macb: Add null check for PCLK and HCLK

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Date:   Wed, 20 Mar 2019 16:16:22 +0530
From:   Harini Katakam <harinik@...inx.com>
To:     Claudiu Beznea <Claudiu.Beznea@...rochip.com>
Cc:     Harini Katakam <harini.katakam@...inx.com>,
        Nicolas Ferre <Nicolas.Ferre@...rochip.com>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Michal Simek <michal.simek@...inx.com>
Subject: Re: [RFC PATCH] net: macb: Add null check for PCLK and HCLK

Hi Claudiu,

On Tue, Mar 19, 2019 at 9:51 PM <Claudiu.Beznea@...rochip.com> wrote:
>
>
>
> On 19.03.2019 07:54, Harini Katakam wrote:
<snip>
> > -     if (IS_ERR(*pclk)) {
> > +     if (IS_ERR(*pclk) || (*pclk == NULL)) {
>
> You can use IS_ERR_OR_NULL() macro.
>
Yes will fix, thanks.
Also the error code from this function will end up being 0 below
even if pointer is NULL. Will fix that.

Regards,
Harini

> >               err = PTR_ERR(*pclk);
> >               dev_err(&pdev->dev, "failed to get macb_clk (%u)\n", err);
> >               return err;
> >       }