Re: [PATCH] Enable async suspend/resume on industrial IO devices

[Jonathan Cameron <jic23@cam.ac.uk>]

On 04/06/11 03:45, Sonny Rao wrote:
> Industrial I/O devices can sometimes take a long time to resume,
> allowing them to be asynchronus saves 50ms on one light sensor
> 
Hi Sonny,

cc'd linux-iio

I'm not particularly familiar with this.  Are there any disadvantages?
I just wonder if it would be better to push this into individual drivers
rather than the core?

Jonathan
> Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
> 
> ---
>  drivers/staging/iio/industrialio-core.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
> index 768f448..a4b099f 100644
> --- a/drivers/staging/iio/industrialio-core.c
> +++ b/drivers/staging/iio/industrialio-core.c
> @@ -811,6 +811,8 @@ int iio_device_register(struct iio_dev *dev_info)
>  	if (dev_info->modes & INDIO_RING_TRIGGERED)
>  		iio_device_register_trigger_consumer(dev_info);
>  
> +	device_enable_async_suspend(&dev_info->dev);
> +
>  	return 0;
>  
>  error_free_sysfs: