ALSA CVS update - Jaroslav Kysela <perex@suse.cz>

USB generic driver
Returned back get_iface() macro for quirks
Removed extra variable to avoid warning

sound/usb/usbaudio.c

@@ -1074,7 +1074,6 @@ static int init_usb_sample_rate(struct usb_device *dev, int iface,
 static int set_format(snd_usb_substream_t *subs, struct audioformat *fmt)
 {
 	struct usb_device *dev = subs->dev;
-	struct usb_host_config *config = dev->actconfig;
 	struct usb_host_interface *alts;
 	struct usb_interface_descriptor *altsd;
 	struct usb_interface *iface;

sound/usb/usbaudio.h

@@ -207,6 +207,7 @@ void snd_usbmidi_disconnect(struct list_head *p, struct usb_driver *driver);
  * (conditional for compatibility with the older API)
  */
 #ifndef get_iface_desc
+#define get_iface(cfg, num)	((cfg)->interface[(num)])
 #define get_iface_desc(iface)	(&(iface)->desc)
 #define get_endpoint(alt,ep)	(&(alt)->endpoint[ep].desc)
 #define get_ep_desc(ep)		(&(ep)->desc)