linux-kernel - Re: [PATCH 28/80] iio: adc: Remove redundant pm_runtime_mark_last

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Message-ID: <20250704100914.000042db@huawei.com>
Date: Fri, 4 Jul 2025 10:09:14 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
CC: Linus Walleij <linus.walleij@...aro.org>, Jonathan Cameron
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Subject: Re: [PATCH 28/80] iio: adc: Remove redundant
 pm_runtime_mark_last_busy() calls

On Fri,  4 Jul 2025 10:54:19 +0300
Sakari Ailus <sakari.ailus@...ux.intel.com> wrote:

> pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
> pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
> to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
> pm_runtime_mark_last_busy().
> 
> Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
> ---
> The cover letter of the set can be found here
> <URL:https://lore.kernel.org/linux-pm/20250704075225.3212486-1-sakari.ailus@linux.intel.com>.
> 
> In brief, this patch depends on PM runtime patches adding marking the last
> busy timestamp in autosuspend related functions. The patches are here, on
> rc2:
> 
>         git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
>                 pm-runtime-6.17-rc1
> 
>  drivers/iio/adc/ab8500-gpadc.c     |  1 -
>  drivers/iio/adc/at91-sama5d2_adc.c | 10 ----------
>  drivers/iio/adc/imx8qxp-adc.c      |  2 --
>  drivers/iio/adc/imx93_adc.c        |  1 -
>  drivers/iio/adc/rcar-gyroadc.c     |  1 -
>  drivers/iio/adc/rzg2l_adc.c        |  3 ---
>  drivers/iio/adc/stm32-adc-core.c   |  1 -
>  drivers/iio/adc/stm32-adc.c        |  7 -------
>  drivers/iio/adc/sun4i-gpadc-iio.c  |  2 --
>  drivers/iio/adc/ti-ads1015.c       |  1 -
>  drivers/iio/adc/ti-ads1100.c       |  1 -
>  drivers/iio/adc/ti-ads1119.c       |  2 --
>  12 files changed, 32 deletions(-)
> 
> diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
> index f3b057f92310..8eaa1dd6a89b 100644
> --- a/drivers/iio/adc/ab8500-gpadc.c
> +++ b/drivers/iio/adc/ab8500-gpadc.c
> @@ -607,7 +607,6 @@ static int ab8500_gpadc_read(struct ab8500_gpadc *gpadc,
>  	}
>  
>  	/* This eventually drops the regulator */
> -	pm_runtime_mark_last_busy(gpadc->dev);
>  	pm_runtime_put_autosuspend(gpadc->dev);
>  
>  	return (high_data << 8) | low_data;
> diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> index c3450246730e..67846fefe21a 100644
> --- a/drivers/iio/adc/at91-sama5d2_adc.c
> +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> @@ -896,7 +896,6 @@ static int at91_adc_config_emr(struct at91_adc_state *st,
>  	emr |= osr | AT91_SAMA5D2_TRACKX(trackx);
>  	at91_adc_writel(st, EMR, emr);
>  
> -	pm_runtime_mark_last_busy(st->dev);
>  	pm_runtime_put_autosuspend(st->dev);
>  
>  	st->oversampling_ratio = oversampling_ratio;
> @@ -971,7 +970,6 @@ static int at91_adc_configure_touch(struct at91_adc_state *st, bool state)
>  				AT91_SAMA5D2_IER_PEN | AT91_SAMA5D2_IER_NOPEN);
>  		at91_adc_writel(st, TSMR, 0);
>  
> -		pm_runtime_mark_last_busy(st->dev);
>  		pm_runtime_put_autosuspend(st->dev);
>  		return 0;
>  	}
> @@ -1143,7 +1141,6 @@ static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
>  	at91_adc_configure_trigger_registers(st, state);
>  
>  	if (!state) {
> -		pm_runtime_mark_last_busy(st->dev);

Getting familiar. I'll not comment on other cases but {} should go here.

>  		pm_runtime_put_autosuspend(st->dev);
>  	}

Please fix all those up and post a v2 series for IIO.

I'd guess similar are present in other subsystems though so may well
need a v2 as well with the excess brackets dropped.


Jonathan