From patchwork Thu Nov 20 17:33:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 5350021 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 1BDF79F1E1 for ; Thu, 20 Nov 2014 17:36:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 27B1B201FA for ; Thu, 20 Nov 2014 17:36:19 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id CCAA0201E4 for ; Thu, 20 Nov 2014 17:36:17 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id A3AD9265DAA; Thu, 20 Nov 2014 18:36:16 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: 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 133CC265AB0; Thu, 20 Nov 2014 18:34:09 +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 3E943265A35; Thu, 20 Nov 2014 18:34:05 +0100 (CET) Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id 9D9C826061A for ; Thu, 20 Nov 2014 18:33:47 +0100 (CET) Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E3D8AAD06 for ; Thu, 20 Nov 2014 17:33:46 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Date: Thu, 20 Nov 2014 18:33:26 +0100 Message-Id: <1416504815-28685-2-git-send-email-tiwai@suse.de> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1416504815-28685-1-git-send-email-tiwai@suse.de> References: <1416504815-28685-1-git-send-email-tiwai@suse.de> Subject: [alsa-devel] [PATCH RFC 01/10] ALSA: usb-audio: Refactor ignore_ctl_error checks 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 Introduce an internal helper macro for avoiding many open codes. The only slight behavior change is in a couple of get ballcks where the value is reset at error no matter whether ignore_ctl_error is set or not. Actually this is even safer than before. Signed-off-by: Takashi Iwai --- sound/usb/mixer.c | 39 ++++++++++++++++----------------------- 1 file changed, 16 insertions(+), 23 deletions(-) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 14e1455ca9de..7756fcf877e0 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -136,6 +136,10 @@ check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) return strlcpy(buf, p->name, buflen); } +/* ignore the error value if ignore_ctl_error flag is set */ +#define filter_error(cval, err) \ + ((cval)->mixer->ignore_ctl_error ? 0 : (err)) + /* check whether the control should be ignored */ static inline int check_ignored_ctl(const struct usbmix_name_map *p) @@ -1088,7 +1092,7 @@ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, continue; err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val); if (err < 0) - return cval->mixer->ignore_ctl_error ? 0 : err; + return filter_error(cval, err); val = get_relative_value(cval, val); ucontrol->value.integer.value[cnt] = val; cnt++; @@ -1098,7 +1102,7 @@ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, /* master channel */ err = snd_usb_get_cur_mix_value(cval, 0, 0, &val); if (err < 0) - return cval->mixer->ignore_ctl_error ? 0 : err; + return filter_error(cval, err); val = get_relative_value(cval, val); ucontrol->value.integer.value[0] = val; } @@ -1120,7 +1124,7 @@ static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, continue; err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval); if (err < 0) - return cval->mixer->ignore_ctl_error ? 0 : err; + return filter_error(cval, err); val = ucontrol->value.integer.value[cnt]; val = get_abs_value(cval, val); if (oval != val) { @@ -1133,7 +1137,7 @@ static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, /* master channel */ err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval); if (err < 0) - return cval->mixer->ignore_ctl_error ? 0 : err; + return filter_error(cval, err); val = ucontrol->value.integer.value[0]; val = get_abs_value(cval, val); if (val != oval) { @@ -1628,12 +1632,10 @@ static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, int err, val; err = get_cur_ctl_value(cval, cval->control << 8, &val); - if (err < 0 && cval->mixer->ignore_ctl_error) { + if (err < 0) { ucontrol->value.integer.value[0] = cval->min; - return 0; + return filter_error(cval, err); } - if (err < 0) - return err; val = get_relative_value(cval, val); ucontrol->value.integer.value[0] = val; return 0; @@ -1647,11 +1649,8 @@ static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, int val, oval, err; err = get_cur_ctl_value(cval, cval->control << 8, &oval); - if (err < 0) { - if (cval->mixer->ignore_ctl_error) - return 0; - return err; - } + if (err < 0) + return filter_error(cval, err); val = ucontrol->value.integer.value[0]; val = get_abs_value(cval, val); if (val != oval) { @@ -1923,11 +1922,8 @@ static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, err = get_cur_ctl_value(cval, cval->control << 8, &val); if (err < 0) { - if (cval->mixer->ignore_ctl_error) { - ucontrol->value.enumerated.item[0] = 0; - return 0; - } - return err; + ucontrol->value.enumerated.item[0] = 0; + return filter_error(cval, err); } val = get_relative_value(cval, val); ucontrol->value.enumerated.item[0] = val; @@ -1942,11 +1938,8 @@ static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, int val, oval, err; err = get_cur_ctl_value(cval, cval->control << 8, &oval); - if (err < 0) { - if (cval->mixer->ignore_ctl_error) - return 0; - return err; - } + if (err < 0) + return filter_error(cval, err); val = ucontrol->value.enumerated.item[0]; val = get_abs_value(cval, val); if (val != oval) {