From mboxrd@z Thu Jan 1 00:00:00 1970 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=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 687F7C433DF for ; Mon, 24 Aug 2020 17:11:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C80A2063A for ; Mon, 24 Aug 2020 17:11:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598289082; bh=1N7E8jTdaJiP5AS0s7ssZc9dpyomkdQrUUBLpq3o5w0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Dx7zsqBjJBP81xhS0zcZ3kNZDWnc1zIiw8uMSjiGoj+zXZ9VXMOoQtNF80H1lAPsN WIM7fCOFPTUK3beaT91kieNMhmusyaQ0tqptVdIhB2H5IisU+Ovd+UipVRbnW0oZeu ajKyGIWGEz3ipV0+1T0JacPA2a4+UImVqA0swWBE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726656AbgHXRLT (ORCPT ); Mon, 24 Aug 2020 13:11:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:40324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728402AbgHXQh4 (ORCPT ); Mon, 24 Aug 2020 12:37:56 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1084222D6E; Mon, 24 Aug 2020 16:37:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598287036; bh=1N7E8jTdaJiP5AS0s7ssZc9dpyomkdQrUUBLpq3o5w0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eOwiE1a6iYHna+N+/ANNhe313c54QN2GMwz0onYnPOOP5ZRZfV81mndKl73FayoMU /Y5ZR68SrHKz+gZGRFTHRBnB0J0Cr6Gvi5j7gM0/YZC4O4dnDAahnElUF8x/CAbXde o9zvT3e2k2nvhC0otf0GfID3ZyzQMYX+URErxJ8Q= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tom Yan , Takashi Iwai , Sasha Levin , alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 5.7 31/54] ALSA: usb-audio: ignore broken processing/extension unit Date: Mon, 24 Aug 2020 12:36:10 -0400 Message-Id: <20200824163634.606093-31-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200824163634.606093-1-sashal@kernel.org> References: <20200824163634.606093-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Yan [ Upstream commit d8d0db7bb358ef65d60726a61bfcd08eccff0bc0 ] Some devices have broken extension unit where getting current value doesn't work. Attempt that once when creating mixer control for it. If it fails, just ignore it, so that it won't cripple the device entirely (and/or make the error floods). Signed-off-by: Tom Yan Link: https://lore.kernel.org/r/5f3abc52.1c69fb81.9cf2.fe91@mx.google.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/usb/mixer.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index eab0fd4fd7c33..e0b7174c10430 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -2367,7 +2367,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, int num_ins; struct usb_mixer_elem_info *cval; struct snd_kcontrol *kctl; - int i, err, nameid, type, len; + int i, err, nameid, type, len, val; const struct procunit_info *info; const struct procunit_value_info *valinfo; const struct usbmix_name_map *map; @@ -2470,6 +2470,12 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, break; } + err = get_cur_ctl_value(cval, cval->control << 8, &val); + if (err < 0) { + usb_mixer_elem_info_free(cval); + return -EINVAL; + } + kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); if (!kctl) { usb_mixer_elem_info_free(cval); -- 2.25.1