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

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Date:   Mon, 30 Aug 2021 12:00:06 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Cc:     Yang Yingliang <yangyingliang@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in
 rzg2l_adc_pm_runtime_resume()

On Fri, 20 Aug 2021 14:04:15 +0000
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com> wrote:

> Hi Yang,
> 
> Thank you for the patch.
> 
> > -----Original Message-----
> > From: Yang Yingliang <yangyingliang@...wei.com>
> > Sent: 19 August 2021 14:24
> > To: linux-kernel@...r.kernel.org; linux-iio@...r.kernel.org
> > Cc: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>; jic23@...nel.org
> > Subject: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
> > 
> > Add clk_disable_unprepare() on error path in rzg2l_adc_pm_runtime_resume().
> > 
> > Reported-by: Hulk Robot <hulkci@...wei.com>
> > Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> > ---
> >  drivers/iio/adc/rzg2l_adc.c | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >   
> With subject line changed to, iio: adc: rzg2l_adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
> 
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Patch title updated as suggested and applied to the fixes-togreg branch of iio.git
which will go upstream sometime after rc1.

Thanks,

Jonathan

> 
> Cheers,
> Prabhakar
> 
> > diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index
> > 9996d5eef289..c38f43ea624f 100644
> > --- a/drivers/iio/adc/rzg2l_adc.c
> > +++ b/drivers/iio/adc/rzg2l_adc.c
> > @@ -570,8 +570,10 @@ static int __maybe_unused rzg2l_adc_pm_runtime_resume(struct device *dev)
> >  		return ret;
> > 
> >  	ret = clk_prepare_enable(adc->adclk);
> > -	if (ret)
> > +	if (ret) {
> > +		clk_disable_unprepare(adc->pclk);
> >  		return ret;
> > +	}
> > 
> >  	rzg2l_adc_pwr(adc, true);
> > 
> > --
> > 2.25.1  
>