From patchwork Mon Nov 9 12:55:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 322651 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3011CC388F7 for ; Mon, 9 Nov 2020 13:30:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D4B622076E for ; Mon, 9 Nov 2020 13:30:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604928638; bh=c4fqUKwJLWUdNQAK10C+8HsUOSTKIwNnNPCC/mNN9gI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=acvEY92zLBzO7x3MAgVcW5Cyhcob1vNU1BC4Gx6H4FQ2zx4mjemkgU5gBm08vlaEA epxeBCJGwWT8l00IUhKLmIk9H2NDdT5BBj1kQ0dn3m1DK0tPkmUH840tNROLh9n+w6 eAdaNclNksJx4I7m0RHUv9/pNk4HCoBO3xiDz6/w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731662AbgKINKy (ORCPT ); Mon, 9 Nov 2020 08:10:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:36276 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732190AbgKINKy (ORCPT ); Mon, 9 Nov 2020 08:10:54 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 60B1420663; Mon, 9 Nov 2020 13:10:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604927453; bh=c4fqUKwJLWUdNQAK10C+8HsUOSTKIwNnNPCC/mNN9gI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QE+8HWrjoq1i8DLwPDBWCRdN4/07A0lPIkB56+6i4q9iWbzXFBUsptz0hP24rlgPj WHCDimt10txj0NL6I0F25S8teWkPMm9qU4LpxA4qNujzPgffVf3hqi0zkZn6RtK0CN BksSa0uO02aehHZUWneUairCcHo0LDcEPYbY+D8A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Geoffrey D. Bennett" , Takashi Iwai Subject: [PATCH 4.19 34/71] ALSA: usb-audio: Add implicit feedback quirk for Qu-16 Date: Mon, 9 Nov 2020 13:55:28 +0100 Message-Id: <20201109125021.506224588@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201109125019.906191744@linuxfoundation.org> References: <20201109125019.906191744@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Geoffrey D. Bennett commit 0938ecae432e7ac8b01080c35dd81d50a1e43033 upstream. This patch fixes audio distortion on playback for the Allen&Heath Qu-16. Signed-off-by: Geoffrey D. Bennett Cc: Link: https://lore.kernel.org/r/20201104115717.GA19046@b4.vu Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/pcm.c | 1 + 1 file changed, 1 insertion(+) --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -334,6 +334,7 @@ static int set_sync_ep_implicit_fb_quirk switch (subs->stream->chip->usb_id) { case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ + case USB_ID(0x22f0, 0x0006): /* Allen&Heath Qu-16 */ ep = 0x81; ifnum = 3; goto add_sync_ep_from_ifnum;