From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f44.google.com (mail-pj1-f44.google.com [209.85.216.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 44F643F23B7 for ; Thu, 11 Jun 2026 12:00:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781179239; cv=none; b=L/LjtUR1DkUJESmkdVMSSFu7PosO9p+gPaQqNSQojd/ufoshJvsJjprd70GnzGD2IaXuORg5jrdJRGRc6ni4tYayrC/CTYooZIKWiW721WRJVrwPlQtEsZ9lb6bjbhxaonGisYXmiIunORQZPwX7opAgeXHNQ8o6LSH1oRKjf6U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781179239; c=relaxed/simple; bh=KOzGxnY9BuHYqQLMmgvxFVDbCShW/rX+pxfhkf+OFrw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=H0UFN7Tox0XHyJuR9f1ypfzP3Gxl4c+uZImwCg/p637YgYhye83OwfwXjE64dFlK5zU8tVz/zoppEurijQ8V50lE8uPuLSP7LTnGaXGSP/F3aEj6epLBls9w3z9lQTnc68dhcDaXKUjFSFEUiHHeQQ+mbwIwIclyeHm6q2st8wE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=qvOBiBfF; arc=none smtp.client-ip=209.85.216.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qvOBiBfF" Received: by mail-pj1-f44.google.com with SMTP id 98e67ed59e1d1-36baec934b6so465570a91.0 for ; Thu, 11 Jun 2026 05:00:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1781179238; x=1781784038; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=bmt4xRAGBzohOMBssTAL2xJoIzokuUutc/sEsRjXxzE=; b=qvOBiBfFLHm0IA1zZiMGZq0EKBTmPOZtWd2BFQyHkfAQ+FsroflfsOEIVFcfdvQQUl HHzXDLlqUWtOroGU99pDlpdd7U2Ra5pkgYljpUVDjGBysUlDnYr9wwA/0m8k7+B9n7bG 8WKNLoP8mTUeswTx3V9mh9sWMgYX1rN4x2GfXXFIcYk96AjEBGFVZyyzcXM/xnY/HPrV 1mkv59FwTo8ZgjZuPbaxCqDdF03PTJRVaOzvxIwvMYftFaFzMy4pBcLEsZV32x/x3Rdn khQoQA9kULK/Hk7vHOn2sEN/R82ZxLLm9rJLmBNQGFp2aPPIdzIIyfpTKcjKcquxT6oQ oUng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781179238; x=1781784038; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=bmt4xRAGBzohOMBssTAL2xJoIzokuUutc/sEsRjXxzE=; b=E+GXOeBCuZto+gxQitcUJnzwZv3WFgkaB0pl2r/4DDiYYVYDCgXKKUPm0/pmrfVYBh v826Wp3kIp6LZ0USjfoyGu/n7GnyhdZatW6PMfpfFtFU2yniD6EZsafY+Le1XsEPhsgb vPV+8SVkoJ0uk+yHVDKMS5wSWsZyPKqp4um+ydXznQ88j6esBcZQGqM7I3hY6qtzlvB0 pdm0HKCPEqnmfA9GtR+AzgHGOjK5smL4K9o3igrEp/01N5rSTvLxDbdE4vYSbLsUQ8FZ XSDfoWEnPiZsTufMiK2A0XsWVCizG1gDUt7ACLApBzjfAREt6CvvpXbwFVhN7TTfUlCP THHg== X-Forwarded-Encrypted: i=1; AFNElJ8dQ79DeHAExqyJJk5rmsRVzHred8brOXYOSL2bS2/qfoivvjR+449lg9sDaWgKeWPb/gK/nVGXmqtTljI=@vger.kernel.org X-Gm-Message-State: AOJu0YxfUNUtcY7u4e61nzzeGLkK33BKW+OGfpSMqnNR8ldqEYB7eSUI Gle5tgycAxOPkm5c8CxNqjPlF9VVMs4fTnXJdkAVx3Z8hdpLraVNZ5pk X-Gm-Gg: Acq92OH4iGMbCI8SRalrkvCA33OT9/kINOuAmKEe/OYgneNXwf8pRQDGELxmKoD3vFp L8LQIGIl14E/3v6cacnvPQWC9N0DUyLAQ8QPmP1i4rOPyqadT2rBK4JNoV8nuT9Gz8djasKpAav dmfV9henkTOocKCl1JiHNQVDG3u4cqRZENZqtrYr6y9Z9oXxvP38ljgWdbWBd/WGV7swpdzMGFk u/BWNXSkdwyBW5Z1f72FGOLfTr4bbLUHcl9VYcV2b//WJ8RDbNgzW84eTebtG5yJ6kZ93Ep5wrD TIDJ6YJgsMT4sGQKKp0giufKGqj28i6ygp9177HtD4n0MhE8qqhvPGTnoAJrI/fmuBvzCUdD1aU lCFNXG3ndFP9xCrposyjDDdqYQJjwD9XA124PNNx6NWC/dJmrB1RER0E64bNBd3XjgflRoUi6y9 G2Zp+ICz66fP4bRyQus/eURf/o/pAKtc08SQvTM0Y3fP7RGTJoNoWloRhTYQhKOQodJnO9fUTVw ioj89I= X-Received: by 2002:a17:90b:3a4c:b0:369:742a:4259 with SMTP id 98e67ed59e1d1-377dfaad4cdmr2158488a91.0.1781179237411; Thu, 11 Jun 2026 05:00:37 -0700 (PDT) Received: from phuc-desktop.. ([183.91.15.56]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-37753d02ca4sm2499692a91.12.2026.06.11.05.00.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jun 2026 05:00:36 -0700 (PDT) From: phucduc.bui@gmail.com To: Mark Brown , Liam Girdwood , Cezary Rojewski Cc: Jaroslav Kysela , Takashi Iwai , Peter Ujfalusi , Bard Liao , Kai Vehmanen , Pierre-Louis Bossart , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH 19/20] ASoC: Intel: atom: sst-mfld-platform-pcm: Use guard() for mutex & spin locks Date: Thu, 11 Jun 2026 18:59:00 +0700 Message-ID: <20260611115901.80438-20-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260611115901.80438-1-phucduc.bui@gmail.com> References: <20260611115901.80438-1-phucduc.bui@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc Convert mutex and spinlock protected sections to guard()/scoped_guard() helpers and simplify the cleanup paths. Also use __free(kfree) for the temporary stream pointer in sst_media_open(). This is purely a code refactoring with no intended functional change. Signed-off-by: bui duc phuc --- sound/soc/intel/atom/sst-mfld-platform-pcm.c | 51 ++++++++------------ 1 file changed, 19 insertions(+), 32 deletions(-) diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c index f074af2499c8..f9df5694f049 100644 --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c @@ -32,16 +32,15 @@ int sst_register_dsp(struct sst_device *dev) return -EINVAL; if (!try_module_get(dev->dev->driver->owner)) return -ENODEV; - mutex_lock(&sst_lock); + guard(mutex)(&sst_lock); if (sst) { dev_err(dev->dev, "we already have a device %s\n", sst->name); module_put(dev->dev->driver->owner); - mutex_unlock(&sst_lock); return -EEXIST; } dev_dbg(dev->dev, "registering device %s\n", dev->name); sst = dev; - mutex_unlock(&sst_lock); + return 0; } EXPORT_SYMBOL_GPL(sst_register_dsp); @@ -53,17 +52,15 @@ int sst_unregister_dsp(struct sst_device *dev) if (dev != sst) return -EINVAL; - mutex_lock(&sst_lock); + guard(mutex)(&sst_lock); - if (!sst) { - mutex_unlock(&sst_lock); + if (!sst) return -EIO; - } module_put(sst->dev->driver->owner); dev_dbg(dev->dev, "unreg %s\n", sst->name); sst = NULL; - mutex_unlock(&sst_lock); + return 0; } EXPORT_SYMBOL_GPL(sst_unregister_dsp); @@ -103,21 +100,15 @@ static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream) void sst_set_stream_status(struct sst_runtime_stream *stream, int state) { - unsigned long flags; - spin_lock_irqsave(&stream->status_lock, flags); + guard(spinlock_irqsave)(&stream->status_lock); stream->stream_status = state; - spin_unlock_irqrestore(&stream->status_lock, flags); } static inline int sst_get_stream_status(struct sst_runtime_stream *stream) { - int state; - unsigned long flags; + guard(spinlock_irqsave)(&stream->status_lock); - spin_lock_irqsave(&stream->status_lock, flags); - state = stream->stream_status; - spin_unlock_irqrestore(&stream->status_lock, flags); - return state; + return stream->stream_status; } static void sst_fill_alloc_params(struct snd_pcm_substream *substream, @@ -304,7 +295,7 @@ static int sst_media_open(struct snd_pcm_substream *substream, { int ret_val = 0; struct snd_pcm_runtime *runtime = substream->runtime; - struct sst_runtime_stream *stream; + struct sst_runtime_stream *stream __free(kfree) = NULL; stream = kzalloc_obj(*stream); if (!stream) @@ -312,15 +303,14 @@ static int sst_media_open(struct snd_pcm_substream *substream, spin_lock_init(&stream->status_lock); /* get the sst ops */ - mutex_lock(&sst_lock); - if (!sst || - !try_module_get(sst->dev->driver->owner)) { - dev_err(dai->dev, "no device available to run\n"); - ret_val = -ENODEV; - goto out_ops; + scoped_guard(mutex, &sst_lock) { + if (!sst || + !try_module_get(sst->dev->driver->owner)) { + dev_err(dai->dev, "no device available to run\n"); + return -ENODEV; + } + stream->ops = sst->ops; } - stream->ops = sst->ops; - mutex_unlock(&sst_lock); stream->stream_info.str_id = 0; @@ -330,7 +320,7 @@ static int sst_media_open(struct snd_pcm_substream *substream, ret_val = power_up_sst(stream); if (ret_val < 0) - goto out_power_up; + return ret_val; /* * Make sure the period to be multiple of 1ms to align the @@ -347,13 +337,10 @@ static int sst_media_open(struct snd_pcm_substream *substream, snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, 2); + stream = NULL; + return snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); -out_ops: - mutex_unlock(&sst_lock); -out_power_up: - kfree(stream); - return ret_val; } static void sst_media_close(struct snd_pcm_substream *substream, -- 2.43.0