From e54835be930d27f9e9db9ffdbb4a4d9785d06e18 Mon Sep 17 00:00:00 2001
From: Hector Martin <marcan@marcan.st>
Date: Sun, 16 Aug 2020 17:44:31 +0900
Subject: [PATCH] ALSA: usb-audio: Update documentation comment for MS2109
quirk
commit 74a2a7de81a2ef20732ec02087314e92692a7a1b upstream.
As the recent fix addressed the channel swap problem more properly,
update the comment as well.
Fixes: 1b7ecc241a67 ("ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109")
Signed-off-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20200816084431.102151-1-marcan@marcan.st
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/quirks-table.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 946e7804942c7..366faaa4ba82c 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3727,8 +3727,8 @@ ALC1220_VB_DESKTOP(0x26ce, 0x0a01), /* Asrock TRX40 Creator */
* they pretend to be 96kHz mono as a workaround for stereo being broken
* by that...
*
- * They also have swapped L-R channels, but that's for userspace to deal
- * with.
+ * They also have an issue with initial stream alignment that causes the
+ * channels to be swapped and out of phase, which is dealt with in quirks.c.
*/
{
.match_flags = USB_DEVICE_ID_MATCH_DEVICE |