From patchwork Tue Jan 22 16:19:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 10775851 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DFC4A1390 for ; Tue, 22 Jan 2019 16:19:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CE1D92B08A for ; Tue, 22 Jan 2019 16:19:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C1D392B15B; Tue, 22 Jan 2019 16:19:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1BCBD2B08A for ; Tue, 22 Jan 2019 16:19:32 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 003A82674B9; Tue, 22 Jan 2019 17:19:25 +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 0D9D12674CE; Tue, 22 Jan 2019 17:19:22 +0100 (CET) Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id 2DE752674A8 for ; Tue, 22 Jan 2019 17:19:18 +0100 (CET) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 618E1B07D for ; Tue, 22 Jan 2019 16:19:18 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Date: Tue, 22 Jan 2019 17:19:10 +0100 Message-Id: <20190122161915.8445-3-tiwai@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190122161915.8445-1-tiwai@suse.de> References: <20190122161915.8445-1-tiwai@suse.de> Subject: [alsa-devel] [PATCH 2/7] ALSA: pcm: Unify snd_pcm_group initialization 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 There are multiple open codes that initialize the same object. Create a common helper function instead. Also, use kzalloc() to be safer at creating a group object, and move the initialization out of the critical section. Signed-off-by: Takashi Iwai --- sound/core/pcm.c | 4 +--- sound/core/pcm_local.h | 1 + sound/core/pcm_native.c | 13 +++++++++---- 3 files changed, 11 insertions(+), 7 deletions(-) diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 01b9d62eef14..88a2998f4f9b 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -753,9 +753,7 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) } } substream->group = &substream->self_group; - spin_lock_init(&substream->self_group.lock); - mutex_init(&substream->self_group.mutex); - INIT_LIST_HEAD(&substream->self_group.substreams); + snd_pcm_group_init(&substream->self_group); list_add_tail(&substream->link_list, &substream->self_group.substreams); atomic_set(&substream->mmap_count, 0); prev = substream; diff --git a/sound/core/pcm_local.h b/sound/core/pcm_local.h index c515612969a4..0b4b5dfaec18 100644 --- a/sound/core/pcm_local.h +++ b/sound/core/pcm_local.h @@ -66,5 +66,6 @@ static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {} #endif void __snd_pcm_xrun(struct snd_pcm_substream *substream); +void snd_pcm_group_init(struct snd_pcm_group *group); #endif /* __SOUND_CORE_PCM_LOCAL_H */ diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index c72dfd1fc1ed..9e4e289e5703 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -100,6 +100,13 @@ static inline void down_write_nonfifo(struct rw_semaphore *lock) msleep(1); } +void snd_pcm_group_init(struct snd_pcm_group *group) +{ + spin_lock_init(&group->lock); + mutex_init(&group->mutex); + INIT_LIST_HEAD(&group->substreams); +} + #define PCM_LOCK_DEFAULT 0 #define PCM_LOCK_IRQ 1 #define PCM_LOCK_IRQSAVE 2 @@ -1969,11 +1976,12 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) } pcm_file = f.file->private_data; substream1 = pcm_file->substream; - group = kmalloc(sizeof(*group), GFP_KERNEL); + group = kzalloc(sizeof(*group), GFP_KERNEL); if (!group) { res = -ENOMEM; goto _nolock; } + snd_pcm_group_init(group); down_write_nonfifo(&snd_pcm_link_rwsem); write_lock_irq(&snd_pcm_link_rwlock); if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || @@ -1989,9 +1997,6 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) if (!snd_pcm_stream_linked(substream)) { substream->group = group; group = NULL; - spin_lock_init(&substream->group->lock); - mutex_init(&substream->group->mutex); - INIT_LIST_HEAD(&substream->group->substreams); list_add_tail(&substream->link_list, &substream->group->substreams); substream->group->count = 1; }