ALSA: snd-usb: fix clock source validity index

[pandora-kernel.git] / sound / usb / clock.c

diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 379baad..5e634a2 100644 (file)
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -111,7 +111,8 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
                return 0;
 
        /* If a clock source can't tell us whether it's valid, we assume it is */
-       if (!uac2_control_is_readable(cs_desc->bmControls, UAC2_CS_CONTROL_CLOCK_VALID))
+       if (!uac2_control_is_readable(cs_desc->bmControls,
+                                     UAC2_CS_CONTROL_CLOCK_VALID - 1))
                return 1;
 
        err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,