Re: [rft]power management for usbtouch

["Ville Syrjälä" <syrjala@sci.fi>]

On Fri, Jun 27, 2008 at 10:50:00AM +0200, Oliver Neukum wrote:
> @@ -820,20 +824,34 @@ exit:
>  static int usbtouch_open(struct input_dev *input)
>  {
>  	struct usbtouch_usb *usbtouch = input_get_drvdata(input);
> +	int rv;
>  
> +	rv = usb_autopm_get_interface(usbtouch->intf);
> +	if (rv < 0)
> +		goto bail;
> +	mutex_lock(&usbtouch->lock);
>  	usbtouch->irq->dev = usbtouch->udev;
>  
> -	if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
> -		return -EIO;
> -
> -	return 0;
> +	if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
> +		rv = -EIO;
> +		usb_autopm_put_interface(usbtouch->intf);
> +	} else {
> +		usbtouch->open = 1;
> +	}
> +	mutex_unlock(&usbtouch->lock);
> +bail:
> +	return rv;
>  }

What if the device is already suspended when open() is called?

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/
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