linux-kernel - Re: [PATCH v2] iio: gyro: bmg160: only set power state if PM

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Date:	Sun, 14 Sep 2014 18:30:02 +0100
From:	Jonathan Cameron <jic23@...nel.org>
To:	Hartmut Knaack <knaack.h@....de>,
	Irina Tirdea <irina.tirdea@...el.com>,
	linux-iio@...r.kernel.org
CC:	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] iio: gyro: bmg160: only set power state if PM_RUNTIME
 is defined

On 09/09/14 23:14, Hartmut Knaack wrote:
> Irina Tirdea schrieb, Am 08.09.2014 16:05:
>> When CONFIG_PM_RUNTIME is not defined and bmg160 tries to power
>> off the device, bmg160_set_power_state will call pm_runtime_put_autosuspend,
>> which is not implemented (wil return -ENOSYS).
>>
>> Only call bmg160_set_power_state when CONFIG_PM_RUNTIME is defined.
>>
>> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
> Acked-by: Hartmut Knaack <knaack.h@....de>
Applied to the togreg branch of iio.git. Initially pushed out as testing
for the autobuilders to play.

Thanks,

Jonathan
>> ---
>>
>> Changes in v2:
>>  - moved ifdef CONFIG_PM_RUNTIME inside bmg160_set_power_state as
>> Hartmut Knaack suggested
>>
>>  drivers/iio/gyro/bmg160.c |    2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c
>> index 7524698..1f967e0d 100644
>> --- a/drivers/iio/gyro/bmg160.c
>> +++ b/drivers/iio/gyro/bmg160.c
>> @@ -237,6 +237,7 @@ static int bmg160_chip_init(struct bmg160_data *data)
>>  
>>  static int bmg160_set_power_state(struct bmg160_data *data, bool on)
>>  {
>> +#ifdef CONFIG_PM_RUNTIME
>>  	int ret;
>>  
>>  	if (on)
>> @@ -251,6 +252,7 @@ static int bmg160_set_power_state(struct bmg160_data *data, bool on)
>>  			"Failed: bmg160_set_power_state for %d\n", on);
>>  		return ret;
>>  	}
>> +#endif
>>  
>>  	return 0;
>>  }
>>
> 
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