[PATCH] ALSA: usb-audio: Drop superfluous interface setup at parsing

[Takashi Iwai]

We reset each interface that is being parsed for each stream, but this
is superfluous and even can lead to spurious errors.  Since the
interface is set up properly at opening the endpoint for each actual
stream operation, let's drop the superfluous one.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/usb/stream.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index ceb93d798182..99578e9a8af0 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -1221,12 +1221,6 @@ static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip,
 			if (err < 0)
 				return err;
 		}
-
-		/* try to set the interface... */
-		usb_set_interface(chip->dev, iface_no, 0);
-		snd_usb_init_pitch(chip, fp);
-		snd_usb_init_sample_rate(chip, fp, fp->rate_max);
-		usb_set_interface(chip->dev, iface_no, altno);
 	}
 	return 0;
 }
-- 
2.35.3