snd_usb_apply_boot_quirk_once  600 sound/usb/card.c 		err = snd_usb_apply_boot_quirk_once(dev, intf, quirk, id);
snd_usb_apply_boot_quirk_once   23 sound/usb/quirks.h int snd_usb_apply_boot_quirk_once(struct usb_device *dev,