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Mon, 11 Aug 2025 10:08:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id wHR1GQ7BmWiVBwAAD6G6ig (envelope-from ); Mon, 11 Aug 2025 10:08:14 +0000 From: Takashi Iwai To: linux-sound@vger.kernel.org Cc: David Rhodes , Richard Fitzgerald , patches@opensource.cirrus.com, Shenghao Ding , Kevin Lu , Baojun Xu Subject: [PATCH 07/25] ALSA: hda/common: Use guard() for mutex locks Date: Mon, 11 Aug 2025 12:07:41 +0200 Message-ID: <20250811100807.7962-8-tiwai@suse.de> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250811100807.7962-1-tiwai@suse.de> References: <20250811100807.7962-1-tiwai@suse.de> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Level: X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,suse.de:mid,imap1.dmz-prg2.suse.org:helo]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCPT_COUNT_SEVEN(0.00)[7]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; R_RATELIMIT(0.00)[to_ip_from(RLf66hkhxcz6y1w5afddqk81z3)]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -2.80 Replace the manual mutex lock/unlock pairs with guard(). Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai --- sound/hda/common/codec.c | 89 +++++++++++++++-------------------- sound/hda/common/controller.c | 24 +++++----- sound/hda/common/sysfs.c | 66 ++++++++++---------------- 3 files changed, 74 insertions(+), 105 deletions(-) diff --git a/sound/hda/common/codec.c b/sound/hda/common/codec.c index 28cdbf6dd98a..9bc3d260e20d 100644 --- a/sound/hda/common/codec.c +++ b/sound/hda/common/codec.c @@ -38,13 +38,12 @@ static int call_exec_verb(struct hda_bus *bus, struct hda_codec *codec, int err; CLASS(snd_hda_power_pm, pm)(codec); - mutex_lock(&bus->core.cmd_mutex); + guard(mutex)(&bus->core.cmd_mutex); if (flags & HDA_RW_NO_RESPONSE_FALLBACK) bus->no_response_fallback = 1; err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr, cmd, res); bus->no_response_fallback = 0; - mutex_unlock(&bus->core.cmd_mutex); return err; } @@ -532,11 +531,11 @@ unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid) #ifdef CONFIG_SND_HDA_RECONFIG { unsigned int cfg = 0; - mutex_lock(&codec->user_mutex); - pin = look_up_pincfg(codec, &codec->user_pins, nid); - if (pin) - cfg = pin->cfg; - mutex_unlock(&codec->user_mutex); + scoped_guard(mutex, &codec->user_mutex) { + pin = look_up_pincfg(codec, &codec->user_pins, nid); + if (pin) + cfg = pin->cfg; + } if (cfg) return cfg; } @@ -2180,13 +2179,12 @@ static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol, if (WARN_ON(codec->spdif_out.used <= idx)) return -EINVAL; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); ucontrol->value.iec958.status[0] = spdif->status & 0xff; ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff; ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff; ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff; - mutex_unlock(&codec->spdif_mutex); return 0; } @@ -2289,7 +2287,7 @@ static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol, if (WARN_ON(codec->spdif_out.used <= idx)) return -EINVAL; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); nid = spdif->nid; spdif->status = ucontrol->value.iec958.status[0] | @@ -2302,7 +2300,6 @@ static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol, spdif->ctls = val; if (change && nid != (u16)-1) set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff); - mutex_unlock(&codec->spdif_mutex); return change; } @@ -2317,10 +2314,9 @@ static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol, if (WARN_ON(codec->spdif_out.used <= idx)) return -EINVAL; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE; - mutex_unlock(&codec->spdif_mutex); return 0; } @@ -2347,7 +2343,7 @@ static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol, if (WARN_ON(codec->spdif_out.used <= idx)) return -EINVAL; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); nid = spdif->nid; val = spdif->ctls & ~AC_DIG1_ENABLE; @@ -2357,7 +2353,6 @@ static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol, spdif->ctls = val; if (change && nid != (u16)-1) set_spdif_ctls(codec, nid, val & 0xff, -1); - mutex_unlock(&codec->spdif_mutex); return change; } @@ -2502,10 +2497,9 @@ void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx) if (WARN_ON(codec->spdif_out.used <= idx)) return; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); spdif->nid = (u16)-1; - mutex_unlock(&codec->spdif_mutex); } EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign); @@ -2524,14 +2518,13 @@ void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid) if (WARN_ON(codec->spdif_out.used <= idx)) return; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); spdif = snd_array_elem(&codec->spdif_out, idx); if (spdif->nid != nid) { spdif->nid = nid; val = spdif->ctls; set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff); } - mutex_unlock(&codec->spdif_mutex); } EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign); @@ -2606,14 +2599,13 @@ static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol, unsigned int val = !!ucontrol->value.integer.value[0]; int change; - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); change = codec->spdif_in_enable != val; if (change) { codec->spdif_in_enable = val; snd_hdac_regmap_write(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1, val); } - mutex_unlock(&codec->spdif_mutex); return change; } @@ -3183,7 +3175,8 @@ int snd_hda_codec_prepare(struct hda_codec *codec, struct snd_pcm_substream *substream) { int ret; - mutex_lock(&codec->bus->prepare_mutex); + + guard(mutex)(&codec->bus->prepare_mutex); if (hinfo->ops.prepare) ret = hinfo->ops.prepare(hinfo, codec, stream, format, substream); @@ -3191,7 +3184,6 @@ int snd_hda_codec_prepare(struct hda_codec *codec, ret = -ENODEV; if (ret >= 0) purify_inactive_streams(codec); - mutex_unlock(&codec->bus->prepare_mutex); return ret; } EXPORT_SYMBOL_GPL(snd_hda_codec_prepare); @@ -3208,10 +3200,9 @@ void snd_hda_codec_cleanup(struct hda_codec *codec, struct hda_pcm_stream *hinfo, struct snd_pcm_substream *substream) { - mutex_lock(&codec->bus->prepare_mutex); + guard(mutex)(&codec->bus->prepare_mutex); if (hinfo->ops.cleanup) hinfo->ops.cleanup(hinfo, codec, substream); - mutex_unlock(&codec->bus->prepare_mutex); } EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup); @@ -3641,12 +3632,11 @@ static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid) int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout) { - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); if (mout->dig_out_used == HDA_DIG_ANALOG_DUP) /* already opened as analog dup; reset it once */ cleanup_dig_out_stream(codec, mout->dig_out_nid); mout->dig_out_used = HDA_DIG_EXCLUSIVE; - mutex_unlock(&codec->spdif_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open); @@ -3665,9 +3655,8 @@ int snd_hda_multi_out_dig_prepare(struct hda_codec *codec, unsigned int format, struct snd_pcm_substream *substream) { - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format); - mutex_unlock(&codec->spdif_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare); @@ -3680,9 +3669,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare); int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec, struct hda_multi_out *mout) { - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); cleanup_dig_out_stream(codec, mout->dig_out_nid); - mutex_unlock(&codec->spdif_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup); @@ -3695,9 +3683,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup); int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout) { - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); mout->dig_out_used = 0; - mutex_unlock(&codec->spdif_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close); @@ -3737,7 +3724,7 @@ int snd_hda_multi_out_analog_open(struct hda_codec *codec, NULL, &mout->spdif_maxbps); } - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); if (mout->share_spdif) { if ((runtime->hw.rates & mout->spdif_rates) && (runtime->hw.formats & mout->spdif_formats)) { @@ -3750,7 +3737,6 @@ int snd_hda_multi_out_analog_open(struct hda_codec *codec, /* FIXME: need notify? */ } } - mutex_unlock(&codec->spdif_mutex); } return snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 2); @@ -3779,23 +3765,23 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_spdif_out *spdif; int i; - mutex_lock(&codec->spdif_mutex); - spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid); - if (mout->dig_out_nid && mout->share_spdif && - mout->dig_out_used != HDA_DIG_EXCLUSIVE) { - if (chs == 2 && spdif != NULL && - snd_hda_is_supported_format(codec, mout->dig_out_nid, - format) && - !(spdif->status & IEC958_AES0_NONAUDIO)) { - mout->dig_out_used = HDA_DIG_ANALOG_DUP; - setup_dig_out_stream(codec, mout->dig_out_nid, - stream_tag, format); - } else { - mout->dig_out_used = 0; - cleanup_dig_out_stream(codec, mout->dig_out_nid); + scoped_guard(mutex, &codec->spdif_mutex) { + spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid); + if (mout->dig_out_nid && mout->share_spdif && + mout->dig_out_used != HDA_DIG_EXCLUSIVE) { + if (chs == 2 && spdif != NULL && + snd_hda_is_supported_format(codec, mout->dig_out_nid, + format) && + !(spdif->status & IEC958_AES0_NONAUDIO)) { + mout->dig_out_used = HDA_DIG_ANALOG_DUP; + setup_dig_out_stream(codec, mout->dig_out_nid, + stream_tag, format); + } else { + mout->dig_out_used = 0; + cleanup_dig_out_stream(codec, mout->dig_out_nid); + } } } - mutex_unlock(&codec->spdif_mutex); /* front */ snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag, @@ -3862,12 +3848,11 @@ int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, if (mout->extra_out_nid[i]) snd_hda_codec_cleanup_stream(codec, mout->extra_out_nid[i]); - mutex_lock(&codec->spdif_mutex); + guard(mutex)(&codec->spdif_mutex); if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) { cleanup_dig_out_stream(codec, mout->dig_out_nid); mout->dig_out_used = 0; } - mutex_unlock(&codec->spdif_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup); diff --git a/sound/hda/common/controller.c b/sound/hda/common/controller.c index ceab8625bb1f..a5693c9ca400 100644 --- a/sound/hda/common/controller.c +++ b/sound/hda/common/controller.c @@ -96,12 +96,12 @@ static int azx_pcm_close(struct snd_pcm_substream *substream) struct azx_dev *azx_dev = get_azx_dev(substream); trace_azx_pcm_close(chip, azx_dev); - mutex_lock(&chip->open_mutex); - azx_release_device(azx_dev); - if (hinfo->ops.close) - hinfo->ops.close(hinfo, apcm->codec, substream); - snd_hda_power_down(apcm->codec); - mutex_unlock(&chip->open_mutex); + scoped_guard(mutex, &chip->open_mutex) { + azx_release_device(azx_dev); + if (hinfo->ops.close) + hinfo->ops.close(hinfo, apcm->codec, substream); + snd_hda_power_down(apcm->codec); + } snd_hda_codec_pcm_put(apcm->info); return 0; } @@ -1129,12 +1129,12 @@ static int probe_codec(struct azx *chip, int addr) int err; unsigned int res = -1; - mutex_lock(&bus->cmd_mutex); - chip->probing = 1; - azx_send_cmd(bus, cmd); - err = azx_get_response(bus, addr, &res); - chip->probing = 0; - mutex_unlock(&bus->cmd_mutex); + scoped_guard(mutex, &bus->cmd_mutex) { + chip->probing = 1; + azx_send_cmd(bus, cmd); + err = azx_get_response(bus, addr, &res); + chip->probing = 0; + } if (err < 0 || res == -1) return -EIO; dev_dbg(chip->card->dev, "codec #%d probed OK\n", addr); diff --git a/sound/hda/common/sysfs.c b/sound/hda/common/sysfs.c index 0d464d4dd7c9..555c16ea60a5 100644 --- a/sound/hda/common/sysfs.c +++ b/sound/hda/common/sysfs.c @@ -81,12 +81,12 @@ static ssize_t pin_configs_show(struct hda_codec *codec, { const struct hda_pincfg *pin; int i, len = 0; - mutex_lock(&codec->user_mutex); + + guard(mutex)(&codec->user_mutex); snd_array_for_each(list, i, pin) { len += sysfs_emit_at(buf, len, "0x%02x 0x%08x\n", pin->nid, pin->cfg); } - mutex_unlock(&codec->user_mutex); return len; } @@ -215,12 +215,12 @@ static ssize_t init_verbs_show(struct device *dev, struct hda_codec *codec = dev_get_drvdata(dev); const struct hda_verb *v; int i, len = 0; - mutex_lock(&codec->user_mutex); + + guard(mutex)(&codec->user_mutex); snd_array_for_each(&codec->init_verbs, i, v) { len += sysfs_emit_at(buf, len, "0x%02x 0x%03x 0x%04x\n", v->nid, v->verb, v->param); } - mutex_unlock(&codec->user_mutex); return len; } @@ -233,16 +233,13 @@ static int parse_init_verbs(struct hda_codec *codec, const char *buf) return -EINVAL; if (!nid || !verb) return -EINVAL; - mutex_lock(&codec->user_mutex); + guard(mutex)(&codec->user_mutex); v = snd_array_new(&codec->init_verbs); - if (!v) { - mutex_unlock(&codec->user_mutex); + if (!v) return -ENOMEM; - } v->nid = nid; v->verb = verb; v->param = param; - mutex_unlock(&codec->user_mutex); return 0; } @@ -264,12 +261,12 @@ static ssize_t hints_show(struct device *dev, struct hda_codec *codec = dev_get_drvdata(dev); const struct hda_hint *hint; int i, len = 0; - mutex_lock(&codec->user_mutex); + + guard(mutex)(&codec->user_mutex); snd_array_for_each(&codec->hints, i, hint) { len += sysfs_emit_at(buf, len, "%s = %s\n", hint->key, hint->val); } - mutex_unlock(&codec->user_mutex); return len; } @@ -324,7 +321,7 @@ static int parse_hints(struct hda_codec *codec, const char *buf) val = skip_spaces(val); remove_trail_spaces(key); remove_trail_spaces(val); - mutex_lock(&codec->user_mutex); + guard(mutex)(&codec->user_mutex); hint = get_hint(codec, key); if (hint) { /* replace */ @@ -345,7 +342,6 @@ static int parse_hints(struct hda_codec *codec, const char *buf) err = -ENOMEM; } unlock: - mutex_unlock(&codec->user_mutex); if (err) kfree(key); return err; @@ -372,16 +368,14 @@ static ssize_t user_pin_configs_show(struct device *dev, static int parse_user_pin_configs(struct hda_codec *codec, const char *buf) { - int nid, cfg, err; + int nid, cfg; if (sscanf(buf, "%i %i", &nid, &cfg) != 2) return -EINVAL; if (!nid) return -EINVAL; - mutex_lock(&codec->user_mutex); - err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg); - mutex_unlock(&codec->user_mutex); - return err; + guard(mutex)(&codec->user_mutex); + return snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg); } static ssize_t user_pin_configs_store(struct device *dev, @@ -429,26 +423,19 @@ EXPORT_SYMBOL_GPL(snd_hda_get_hint); int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key) { const char *p; - int ret; - mutex_lock(&codec->user_mutex); + guard(mutex)(&codec->user_mutex); p = snd_hda_get_hint(codec, key); if (!p || !*p) - ret = -ENOENT; - else { - switch (toupper(*p)) { - case 'T': /* true */ - case 'Y': /* yes */ - case '1': - ret = 1; - break; - default: - ret = 0; - break; - } + return -ENOENT; + switch (toupper(*p)) { + case 'T': /* true */ + case 'Y': /* yes */ + case '1': + return 1; + default: + return 0; } - mutex_unlock(&codec->user_mutex); - return ret; } EXPORT_SYMBOL_GPL(snd_hda_get_bool_hint); @@ -466,20 +453,17 @@ int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp) { const char *p; unsigned long val; - int ret; - mutex_lock(&codec->user_mutex); + guard(mutex)(&codec->user_mutex); p = snd_hda_get_hint(codec, key); if (!p) - ret = -ENOENT; + return -ENOENT; else if (kstrtoul(p, 0, &val)) - ret = -EINVAL; + return -EINVAL; else { *valp = val; - ret = 0; + return 0; } - mutex_unlock(&codec->user_mutex); - return ret; } EXPORT_SYMBOL_GPL(snd_hda_get_int_hint); #endif /* CONFIG_SND_HDA_RECONFIG */ -- 2.50.1