sound: usb: Enable autosuspend for usb audio device



This allows runtime suspend to kick in upon all the
children of usb device are suspended. It saves power
when usb audio device is connected but not data transfer
is taking place.

CRs-Fixed: 1003807
Change-Id: I227a74c029f10ffda9ceccc10322ad71e7fd0435
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent b128f2fd

sound/usb/card.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -657,6 +657,7 @@ static int usb_audio_probe(struct usb_interface *intf,
	chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);		chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
	if (chip) {		if (chip) {
	usb_set_intfdata(intf, chip);		usb_set_intfdata(intf, chip);
			usb_enable_autosuspend(chip->dev);
	return 0;		return 0;
	} else		} else
	return -EIO;		return -EIO;