* [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
@ 2021-08-19 13:24 Yang Yingliang
2021-08-19 17:20 ` Andy Shevchenko
2021-08-20 14:04 ` Prabhakar Mahadev Lad
0 siblings, 2 replies; 8+ messages in thread
From: Yang Yingliang @ 2021-08-19 13:24 UTC (permalink / raw)
To: linux-kernel, linux-iio; +Cc: prabhakar.mahadev-lad.rj, jic23
Add clk_disable_unprepare() on error path in rzg2l_adc_pm_runtime_resume().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/iio/adc/rzg2l_adc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-19 13:24 [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume() Yang Yingliang
@ 2021-08-19 17:20 ` Andy Shevchenko
2021-08-20 1:52 ` Yang Yingliang
2021-08-20 6:46 ` Sa, Nuno
2021-08-20 14:04 ` Prabhakar Mahadev Lad
1 sibling, 2 replies; 8+ messages in thread
From: Andy Shevchenko @ 2021-08-19 17:20 UTC (permalink / raw)
To: Yang Yingliang; +Cc: linux-kernel, linux-iio, prabhakar.mahadev-lad.rj, jic23
On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang <yangyingliang@huawei.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?!
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-19 17:20 ` Andy Shevchenko
@ 2021-08-20 1:52 ` Yang Yingliang
2021-08-20 9:17 ` Andy Shevchenko
2021-08-20 6:46 ` Sa, Nuno
1 sibling, 1 reply; 8+ messages in thread
From: Yang Yingliang @ 2021-08-20 1:52 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: linux-kernel, linux-iio, prabhakar.mahadev-lad.rj, jic23
Hi,
On 2021/8/20 1:20, Andy Shevchenko wrote:
> On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang <yangyingliang@huawei.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.
^ ^^
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* RE: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-19 17:20 ` Andy Shevchenko
2021-08-20 1:52 ` Yang Yingliang
@ 2021-08-20 6:46 ` Sa, Nuno
1 sibling, 0 replies; 8+ messages in thread
From: Sa, Nuno @ 2021-08-20 6:46 UTC (permalink / raw)
To: Andy Shevchenko, Yang Yingliang
Cc: linux-kernel, linux-iio, prabhakar.mahadev-lad.rj, jic23
> From: Andy Shevchenko <andy.shevchenko@gmail.com>
> Sent: Thursday, August 19, 2021 7:21 PM
> To: Yang Yingliang <yangyingliang@huawei.com>
> Cc: linux-kernel@vger.kernel.org; linux-iio@vger.kernel.org;
> prabhakar.mahadev-lad.rj@bp.renesas.com; jic23@kernel.org
> Subject: Re: [PATCH -next] iio: adc: add missing
> clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
>
> On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang
> <yangyingliang@huawei.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?!
>
Had the same reaction when looked at this patch. Look at the
clock names :).
- Nuno Sá
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-20 1:52 ` Yang Yingliang
@ 2021-08-20 9:17 ` Andy Shevchenko
2021-08-30 10:58 ` Jonathan Cameron
0 siblings, 1 reply; 8+ messages in thread
From: Andy Shevchenko @ 2021-08-20 9:17 UTC (permalink / raw)
To: Yang Yingliang
Cc: Linux Kernel Mailing List, linux-iio, Lad Prabhakar, Jonathan Cameron
On Fri, Aug 20, 2021 at 4:52 AM Yang Yingliang <yangyingliang@huawei.com> wrote:
> On 2021/8/20 1:20, Andy Shevchenko wrote:
> > On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang <yangyingliang@huawei.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.
> ^ ^^
Indeed. I'm wondering if those clocks behave like a bulk or any
combination is possible on a working case?
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 8+ messages in thread
* RE: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-19 13:24 [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume() Yang Yingliang
2021-08-19 17:20 ` Andy Shevchenko
@ 2021-08-20 14:04 ` Prabhakar Mahadev Lad
2021-08-30 11:00 ` Jonathan Cameron
1 sibling, 1 reply; 8+ messages in thread
From: Prabhakar Mahadev Lad @ 2021-08-20 14:04 UTC (permalink / raw)
To: Yang Yingliang, linux-kernel, linux-iio; +Cc: jic23
Hi Yang,
Thank you for the patch.
> -----Original Message-----
> From: Yang Yingliang <yangyingliang@huawei.com>
> Sent: 19 August 2021 14:24
> To: linux-kernel@vger.kernel.org; linux-iio@vger.kernel.org
> Cc: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>; jic23@kernel.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@huawei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@huawei.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@bp.renesas.com>
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
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-20 9:17 ` Andy Shevchenko
@ 2021-08-30 10:58 ` Jonathan Cameron
0 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2021-08-30 10:58 UTC (permalink / raw)
To: Andy Shevchenko
Cc: Yang Yingliang, Linux Kernel Mailing List, linux-iio, Lad Prabhakar
On Fri, 20 Aug 2021 12:17:46 +0300
Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> On Fri, Aug 20, 2021 at 4:52 AM Yang Yingliang <yangyingliang@huawei.com> wrote:
> > On 2021/8/20 1:20, Andy Shevchenko wrote:
> > > On Thu, Aug 19, 2021 at 4:19 PM Yang Yingliang <yangyingliang@huawei.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.
> > ^ ^^
>
> Indeed. I'm wondering if those clocks behave like a bulk or any
> combination is possible on a working case?
They are handled independently in other parts of the driver, so bulk
setting is going to be a mess.
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
2021-08-20 14:04 ` Prabhakar Mahadev Lad
@ 2021-08-30 11:00 ` Jonathan Cameron
0 siblings, 0 replies; 8+ messages in thread
From: Jonathan Cameron @ 2021-08-30 11:00 UTC (permalink / raw)
To: Prabhakar Mahadev Lad; +Cc: Yang Yingliang, linux-kernel, linux-iio
On Fri, 20 Aug 2021 14:04:15 +0000
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
> Hi Yang,
>
> Thank you for the patch.
>
> > -----Original Message-----
> > From: Yang Yingliang <yangyingliang@huawei.com>
> > Sent: 19 August 2021 14:24
> > To: linux-kernel@vger.kernel.org; linux-iio@vger.kernel.org
> > Cc: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>; jic23@kernel.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@huawei.com>
> > Signed-off-by: Yang Yingliang <yangyingliang@huawei.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@bp.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
>
^ permalink raw reply [flat|nested] 8+ messages in thread
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2021-08-19 13:24 [PATCH -next] iio: adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume() Yang Yingliang
2021-08-19 17:20 ` Andy Shevchenko
2021-08-20 1:52 ` Yang Yingliang
2021-08-20 9:17 ` Andy Shevchenko
2021-08-30 10:58 ` Jonathan Cameron
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