Re: [PATCH 06/28] iio: accel: mma9551/3: Balance untime pm + use pm_runtime_resume_and_get()

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Em Sun,  9 May 2021 12:33:32 +0100
Jonathan Cameron <jic23@xxxxxxxxxx> escreveu:

> From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> 
> Both these drivers call pm_runtime_put_no_idle() when the reference
> count should already be zero as there is no matching get()
> 
> Whilst here use pm_runtime_resume_and_get() rather than open coding.

LGTM.

Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>

> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
> ---
>  drivers/iio/accel/mma9551.c      | 1 -
>  drivers/iio/accel/mma9551_core.c | 4 +---
>  drivers/iio/accel/mma9553.c      | 1 -
>  3 files changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
> index 08a2303cc9df..4c359fb05480 100644
> --- a/drivers/iio/accel/mma9551.c
> +++ b/drivers/iio/accel/mma9551.c
> @@ -515,7 +515,6 @@ static int mma9551_remove(struct i2c_client *client)
>  
>  	pm_runtime_disable(&client->dev);
>  	pm_runtime_set_suspended(&client->dev);
> -	pm_runtime_put_noidle(&client->dev);
>  
>  	mutex_lock(&data->mutex);
>  	mma9551_set_device_state(data->client, false);
> diff --git a/drivers/iio/accel/mma9551_core.c b/drivers/iio/accel/mma9551_core.c
> index 666e7a04a7d7..fbf2e2c45678 100644
> --- a/drivers/iio/accel/mma9551_core.c
> +++ b/drivers/iio/accel/mma9551_core.c
> @@ -664,7 +664,7 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
>  	int ret;
>  
>  	if (on)
> -		ret = pm_runtime_get_sync(&client->dev);
> +		ret = pm_runtime_resume_and_get(&client->dev);
>  	else {
>  		pm_runtime_mark_last_busy(&client->dev);
>  		ret = pm_runtime_put_autosuspend(&client->dev);
> @@ -673,8 +673,6 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
>  	if (ret < 0) {
>  		dev_err(&client->dev,
>  			"failed to change power state to %d\n", on);
> -		if (on)
> -			pm_runtime_put_noidle(&client->dev);
>  
>  		return ret;
>  	}
> diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
> index c15908faa381..ba3ecb3b57dc 100644
> --- a/drivers/iio/accel/mma9553.c
> +++ b/drivers/iio/accel/mma9553.c
> @@ -1154,7 +1154,6 @@ static int mma9553_remove(struct i2c_client *client)
>  
>  	pm_runtime_disable(&client->dev);
>  	pm_runtime_set_suspended(&client->dev);
> -	pm_runtime_put_noidle(&client->dev);
>  
>  	mutex_lock(&data->mutex);
>  	mma9551_set_device_state(data->client, false);



Thanks,
Mauro



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