linux-kernel - [PATCH 4.19 39/93] ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers

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Message-Id: <20191027203258.297714007@linuxfoundation.org>
Date:   Sun, 27 Oct 2019 22:00:51 +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,
        Szabolcs Szőke <szszoke.code@...il.com>,
        Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.19 39/93] ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers

From: Szabolcs Szőke <szszoke.code@...il.com>

commit 7571b6a17fcc5e4f6903f065a82d0e38011346ed upstream.

BOSS Katana amplifiers cannot be used for recording or playback if quirks
are applied

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=195223
Signed-off-by: Szabolcs Szőke <szszoke.code@...il.com>
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20191011171937.8013-1-szszoke.code@gmail.com
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/usb/pcm.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -355,6 +355,9 @@ static int set_sync_ep_implicit_fb_quirk
 		ep = 0x81;
 		ifnum = 1;
 		goto add_sync_ep_from_ifnum;
+	case USB_ID(0x0582, 0x01d8): /* BOSS Katana */
+		/* BOSS Katana amplifiers do not need quirks */
+		return 0;
 	}
 
 	if (attr == USB_ENDPOINT_SYNC_ASYNC &&