Re: [PATCH] adp1653: make ->power() method optional

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On Thu, Aug 18, 2011 at 11:53:03AM +0300, Andy Shevchenko wrote:
> The ->power() could be absent or not used on some platforms. This patch makes
> its presence optional.

Hi Andy,

Thanks for the patch!

> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Cc: Sakari Ailus <sakari.ailus@xxxxxx>
> ---
>  drivers/media/video/adp1653.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/media/video/adp1653.c b/drivers/media/video/adp1653.c
> index 0fd9579..65f6f3f 100644
> --- a/drivers/media/video/adp1653.c
> +++ b/drivers/media/video/adp1653.c
> @@ -309,6 +309,9 @@ __adp1653_set_power(struct adp1653_flash *flash, int on)
>  {
>  	int ret;
>  
> +	if (flash->platform_data->power == NULL)
> +		return 0;
> +
>  	ret = flash->platform_data->power(&flash->subdev, on);
>  	if (ret < 0)
>  		return ret;
> -- 
> 1.7.5.4
> 

How about doing this in adp1653_set_power() instead of
__adp1653_set_power()? At least I don't see any ill effects from this.
There's no need to keep track of the power state (flash->power_count) if
there isn't one. :-)

-- 
Sakari Ailus
sakari.ailus@xxxxxx
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