Commit 6373b355 authored Apr 01, 2016 by Hemant Kumar Committed by Gerrit - the friendly Code Review server Jul 25, 2016

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 cc915a39

sound/usb/card.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -643,6 +643,7 @@ static int usb_audio_probe(struct usb_interface *intf,
		usb_chip[chip->index] = chip;
		chip->num_interfaces++;
		usb_set_intfdata(intf, chip);
		usb_enable_autosuspend(chip->dev);
		atomic_dec(&chip->active);
		mutex_unlock(&register_mutex);
		return 0;