linux-kernel - [PATCH 2/4] ALSA: usb-audio: ADC3: Fix channel mapping conversion for ADC3.

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Date:   Fri, 20 Apr 2018 18:03:25 +0100
From:   Jorge Sanjuan <jorge.sanjuan@...ethink.co.uk>
To:     tiwai@...e.com
Cc:     alsa-devel@...a-project.org, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org,
        Michael Drake <michael.drake@...ethink.co.uk>
Subject: [PATCH 2/4] ALSA: usb-audio: ADC3: Fix channel mapping conversion for ADC3.

From: Michael Drake <michael.drake@...ethink.co.uk>

The channel mapping is defined by bChRelationship, not bChPurpose.

Signed-off-by: Michael Drake <michael.drake@...ethink.co.uk>
---
 sound/usb/stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index 6a8f5843334e..956be9f7c72a 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -349,7 +349,7 @@ snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor
 			 * TODO: this conversion is not complete, update it
 			 * after adding UAC3 values to asound.h
 			 */
-			switch (is->bChPurpose) {
+			switch (is->bChRelationship) {
 			case UAC3_CH_MONO:
 				map = SNDRV_CHMAP_MONO;
 				break;
-- 
2.11.0