Setting the active altsetting at changing sample rate seems unrecommended. The host should deselect the altsetting at first before that, then select it again. Tested-by: Keith Milner <kamilner@xxxxxxxxxxxxxxx> Tested-by: Dylan Robinson <dylan_robinson@xxxxxxxx> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> --- sound/usb/stream.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 816fd3e5aada..4501e042a944 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -1223,9 +1223,10 @@ static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip, } /* try to set the interface... */ - usb_set_interface(chip->dev, iface_no, altno); + usb_set_interface(chip->dev, iface_no, 0); snd_usb_init_pitch(chip, iface_no, alts, fp); snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max); + usb_set_interface(chip->dev, iface_no, altno); } return 0; } -- 2.16.4
