Re: [PATCH 09/28] iio: imu: kmx61: Balance runtime pm + use pm_runtime_resume_and_get()

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On Wed, 12 May 2021 15:45:11 +0200
Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> wrote:

> Em Sun,  9 May 2021 12:33:35 +0100
> Jonathan Cameron <jic23@xxxxxxxxxx> escreveu:
> 
> > From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> > 
> > No point in calling pm_runtime_put_noidle() that isn't balancing a get.
> > Note no actual impact because the runtime pm core protects against
> > a negative reference counter.
> > 
> > For the pm_runtime_resume_and_get() main interest is in clearing
> > out this old pattern to avoid it getting coppied into new submissions.
> > 
> > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>  
> 
> LGTM.
> 
> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>

Applied. Thanks, J
> 
> > ---
> >  drivers/iio/imu/kmx61.c | 5 +----
> >  1 file changed, 1 insertion(+), 4 deletions(-)
> > 
> > diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c
> > index d3e06ce99c1e..1dabfd615dab 100644
> > --- a/drivers/iio/imu/kmx61.c
> > +++ b/drivers/iio/imu/kmx61.c
> > @@ -750,7 +750,7 @@ static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device)
> >  	}
> >  
> >  	if (on) {
> > -		ret = pm_runtime_get_sync(&data->client->dev);
> > +		ret = pm_runtime_resume_and_get(&data->client->dev);
> >  	} else {
> >  		pm_runtime_mark_last_busy(&data->client->dev);
> >  		ret = pm_runtime_put_autosuspend(&data->client->dev);
> > @@ -759,8 +759,6 @@ static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device)
> >  		dev_err(&data->client->dev,
> >  			"Failed: kmx61_set_power_state for %d, ret %d\n",
> >  			on, ret);
> > -		if (on)
> > -			pm_runtime_put_noidle(&data->client->dev);
> >  
> >  		return ret;
> >  	}
> > @@ -1426,7 +1424,6 @@ static int kmx61_remove(struct i2c_client *client)
> >  
> >  	pm_runtime_disable(&client->dev);
> >  	pm_runtime_set_suspended(&client->dev);
> > -	pm_runtime_put_noidle(&client->dev);
> >  
> >  	if (client->irq > 0) {
> >  		iio_triggered_buffer_cleanup(data->acc_indio_dev);  
> 
> 
> 
> Thanks,
> Mauro




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