ALSA: usb-audio: ADC3: Fix channel mapping conversion for ADC3.
The channel mapping is defined by bChRelationship, not bChPurpose.
Fixes: 9a2fe9b801
("ALSA: usb: initial USB Audio Device Class 3.0 support")
Reviewed-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -349,7 +349,7 @@ snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor
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* TODO: this conversion is not complete, update it
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* after adding UAC3 values to asound.h
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*/
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switch (is->bChPurpose) {
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switch (is->bChRelationship) {
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case UAC3_CH_MONO:
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map = SNDRV_CHMAP_MONO;
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break;
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