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-rw-r--r--sound/usb/usbaudio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 2b24496..f853b62 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1783,7 +1783,7 @@ static int check_hw_params_convention(struct snd_usb_substream *subs)
if (rates[f->format] && rates[f->format] != f->rates)
goto __out;
}
- channels[f->format] |= (1 << f->channels);
+ channels[f->format] |= 1 << (f->channels - 1);
rates[f->format] |= f->rates;
/* needs knot? */
if (f->rates & SNDRV_PCM_RATE_KNOT)
@@ -1810,7 +1810,7 @@ static int check_hw_params_convention(struct snd_usb_substream *subs)
continue;
for (i = 0; i < 32; i++) {
if (f->rates & (1 << i))
- channels[i] |= (1 << f->channels);
+ channels[i] |= 1 << (f->channels - 1);
}
}
cmaster = 0;