From patchwork Tue Jan 27 16:13:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 5718701 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 88C2AC058D for ; Tue, 27 Jan 2015 16:16:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BC2402018E for ; Tue, 27 Jan 2015 16:16:09 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id A0A6120219 for ; Tue, 27 Jan 2015 16:16:08 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id D3136261566; Tue, 27 Jan 2015 17:16:07 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 23FE62612E3; Tue, 27 Jan 2015 17:13:33 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 88536260A56; Tue, 27 Jan 2015 17:13:29 +0100 (CET) Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id 6C2B9260A5B for ; Tue, 27 Jan 2015 17:13:19 +0100 (CET) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E0C8BADB8; Tue, 27 Jan 2015 16:13:18 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Date: Tue, 27 Jan 2015 17:13:17 +0100 Message-Id: <1422375197-17293-6-git-send-email-tiwai@suse.de> X-Mailer: git-send-email 2.2.2 In-Reply-To: <1422375197-17293-1-git-send-email-tiwai@suse.de> References: <1422375197-17293-1-git-send-email-tiwai@suse.de> Cc: Stefan Hajnoczi , Chris Rorvick Subject: [alsa-devel] [PATCH 5/5] ALSA: line6: Handle error from line6_pcm_acquire() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Takashi Iwai --- sound/usb/line6/pcm.c | 13 ++++++++++--- sound/usb/line6/toneport.c | 13 ++++++++++--- 2 files changed, 20 insertions(+), 6 deletions(-) diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index 73c87467d2e0..8461d6bf992f 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -45,15 +45,22 @@ static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol, { struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); int value = ucontrol->value.integer.value[0]; + int err; if (line6pcm->impulse_volume == value) return 0; line6pcm->impulse_volume = value; - if (value > 0) - line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE); - else + if (value > 0) { + err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE); + if (err < 0) { + line6pcm->impulse_volume = 0; + line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE); + return err; + } + } else { line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE); + } return 1; } diff --git a/sound/usb/line6/toneport.c b/sound/usb/line6/toneport.c index 61fa6256d7b0..819e06b3f3db 100644 --- a/sound/usb/line6/toneport.c +++ b/sound/usb/line6/toneport.c @@ -182,16 +182,23 @@ static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); + int err; if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor) return 0; line6pcm->volume_monitor = ucontrol->value.integer.value[0]; - if (line6pcm->volume_monitor > 0) - line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR); - else + if (line6pcm->volume_monitor > 0) { + err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR); + if (err < 0) { + line6pcm->volume_monitor = 0; + line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR); + return err; + } + } else { line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR); + } return 1; }