Re: [PATCH] USB: separate autosuspend from external suspend

Am Dienstag, 13. März 2007 21:37 schrieb Alan Stern:
> +/**
> + * usb_external_resume_device - external resume of a USB device and its interfaces
> + * @udev: the usb_device to resume
> + *
> + * This routine handles external resume requests: ones not generated
> + * internally by a USB driver (autoresume) but rather coming from the user
> + * (via sysfs), the PM core (system resume), or the device itself (remote
> + * wakeup).  @udev's usage counter is unaffected.
> + *
> + * The caller must hold @udev's device lock.
> + */
> +int usb_external_resume_device(struct usb_device *udev)
>  {

> +	usb_pm_lock(udev);
> +	udev->auto_pm = 0;
> +	status = usb_resume_both(udev);
> +	usb_pm_unlock(udev);
> +
> +	/* Now that the device is awake, we can start trying to autosuspend
> +	 * it again. */
> +	if (status == 0)
> +		usb_try_autosuspend_device(udev);
>  	return status;

Is itr sensible to resume a device which autosuspend had suspended?

	Regards
		Oliver

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