linux-kernel - Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime

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Date:   Fri, 20 Aug 2021 09:52:33 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <prabhakar.mahadev-lad.rj@...renesas.com>, <jic23@...nel.org>
Subject: Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in
 rzg2l_adc_pm_runtime_resume()

Hi,

On 2021/8/20 1:20, Andy Shevchenko wrote:
> On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang <yangyingliang@...wei.com> wrote:
>> Add clk_disable_unprepare() on error path in rzg2l_adc_pm_runtime_resume().
> ...
>
>>          ret = clk_prepare_enable(adc->adclk);
>> -       if (ret)
>> +       if (ret) {
>> +               clk_disable_unprepare(adc->pclk);
>>                  return ret;
>> +       }
> Huh?!
The pclk need be disabled, when enable adclk failed.
       ^                                                         ^^
>