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

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Message-Id: <20191011171937.8013-1-szszoke.code@gmail.com>
Date:   Fri, 11 Oct 2019 19:19:36 +0200
From:   Szabolcs Szőke <szszoke.code@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     szszoke.code@...il.com, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Manuel Reinhardt <manuel.rhdt@...il.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Ard van Breemen <ard@...ak.net>,
        Richard Fontana <rfontana@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers

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>

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

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 33cd26763c0e..daadb0c66eee 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -348,6 +348,9 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
 		ep = 0x84;
 		ifnum = 0;
 		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 &&
-- 
2.20.1