linux-kernel - [PATCH 5.9 051/133] ALSA: usb-audio: Add implicit feedback quirk for MODX

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Date:   Mon,  9 Nov 2020 13:55:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Geoffrey D. Bennett" <g@...vu>,
        Frank Slotta <frank.slotta@...teo.de>,
        Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 5.9 051/133] ALSA: usb-audio: Add implicit feedback quirk for MODX

From: Geoffrey D. Bennett <g@...vu>

commit 26201ddc1373c99b2a67c5774da2f0eecd749b93 upstream.

This patch fixes audio distortion on playback for the Yamaha MODX.

Signed-off-by: Geoffrey D. Bennett <g@...vu>
Tested-by: Frank Slotta <frank.slotta@...teo.de>
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20201104120705.GA19126@b4.vu
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/usb/pcm.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -346,6 +346,7 @@ static int set_sync_ep_implicit_fb_quirk
 		ifnum = 2;
 		goto add_sync_ep_from_ifnum;
 	case USB_ID(0x2466, 0x8003): /* Fractal Audio Axe-Fx II */
+	case USB_ID(0x0499, 0x172a): /* Yamaha MODX */
 		ep = 0x86;
 		ifnum = 2;
 		goto add_sync_ep_from_ifnum;