Re: [PATCH] sound: fsl: add missing put_device() call in imx_hdmi_probe()

[Shengjiu Wang]

On Thu, Dec 9, 2021 at 5:58 PM 王擎 <wangqing@xxxxxxxx> wrote:
>
>
> >> From: Wang Qing <wangqing@xxxxxxxx>
> >>
> >> of_find_device_by_node() takes a reference to the embedded struct device
> >> which needs to be dropped when error return.
> >
> >...
> >
> >>        data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
> >>        if (!data) {
> >> +             put_device(&cpu_pdev->dev);
> >
> >If it's of_find_device_by_node() you need an of_node_put() since you're
> >dropping a reference on the OF node.
> >
>
> Label fail will drop a reference on the OF node.
> Also, put_device() is called later except this branch,
> we just need to add put_device() here.
>
I agree with you. But could you please add the info in this
commit that
the commit:
f670b274f7f6 ASoC: imx-hdmi: add put_device() after of_find_device_by_node()
is partially fixing the original issue, so we still need this fix.

Best regards
Wang Shengjiu