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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cfa57542e0sm7258365ad.67.2026.07.22.21.54.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2026 21:54:35 -0700 (PDT) From: phucduc.bui@gmail.com To: Mark Brown , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Lars-Peter Clausen , nuno.sa@analog.com, Shenghao Ding , Kevin Lu Cc: Baojun Xu , Sen Wang , Steven Eckhoff , Srinivas Kandagatla , Kuninori Morimoto , Charles Keepax , Linus Walleij , u.kleine-koenig@baylibre.com, Thorsten Blum , Kees Cook , Chen Ni , Bartosz Golaszewski , Shengjiu Wang , Sebastian Krzyszkowiak , Pengpeng Hou , Richard Fitzgerald , patches@opensource.cirrus.com, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org, bui duc phuc Subject: [PATCH 07/26] ASoC: codecs: tlv320dac33: Use guard() for mutex & spin locks Date: Thu, 23 Jul 2026 11:53:08 +0700 Message-ID: <20260723045327.28260-8-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260723045327.28260-1-phucduc.bui@gmail.com> References: <20260723045327.28260-1-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 Clean up the code using guard() for mutex & spin locks. Merely code refactoring, and no behavior change. Signed-off-by: bui duc phuc --- sound/soc/codecs/tlv320dac33.c | 87 ++++++++++++++-------------------- 1 file changed, 36 insertions(+), 51 deletions(-) diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index 223c49dfc450..9bd2ddd8dacd 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -7,6 +7,7 @@ * Copyright: (C) 2009 Nokia Corporation */ +#include #include #include #include @@ -236,13 +237,10 @@ static int dac33_write_locked(struct snd_soc_component *component, unsigned int unsigned int value) { struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); - int ret; - mutex_lock(&dac33->mutex); - ret = dac33_write(component, reg, value); - mutex_unlock(&dac33->mutex); + guard(mutex)(&dac33->mutex); - return ret; + return dac33_write(component, reg, value); } #define DAC33_I2C_ADDR_AUTOINC 0x80 @@ -365,13 +363,13 @@ static int dac33_hard_power(struct snd_soc_component *component, int power) struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); int ret = 0; - mutex_lock(&dac33->mutex); + guard(mutex)(&dac33->mutex); /* Safety check */ if (unlikely(power == dac33->chip_power)) { dev_dbg(component->dev, "Trying to set the same power state: %s\n", power ? "ON" : "OFF"); - goto exit; + return ret; } if (power) { @@ -380,7 +378,7 @@ static int dac33_hard_power(struct snd_soc_component *component, int power) if (ret != 0) { dev_err(component->dev, "Failed to enable supplies: %d\n", ret); - goto exit; + return ret; } if (dac33->reset_gpiod) { @@ -388,7 +386,7 @@ static int dac33_hard_power(struct snd_soc_component *component, int power) if (ret < 0) { dev_err(&dac33->i2c->dev, "Failed to set reset GPIO: %d\n", ret); - goto exit; + return ret; } } @@ -400,7 +398,7 @@ static int dac33_hard_power(struct snd_soc_component *component, int power) if (ret < 0) { dev_err(&dac33->i2c->dev, "Failed to set reset GPIO: %d\n", ret); - goto exit; + return ret; } } @@ -409,14 +407,12 @@ static int dac33_hard_power(struct snd_soc_component *component, int power) if (ret != 0) { dev_err(component->dev, "Failed to disable supplies: %d\n", ret); - goto exit; + return ret; } dac33->chip_power = 0; } -exit: - mutex_unlock(&dac33->mutex); return ret; } @@ -659,7 +655,6 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) { struct snd_soc_component *component = dac33->component; unsigned int delay; - unsigned long flags; switch (dac33->fifo_mode) { case DAC33_FIFO_MODE1: @@ -667,10 +662,10 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) DAC33_THRREG(dac33->nsample)); /* Take the timestamps */ - spin_lock_irqsave(&dac33->lock, flags); - dac33->t_stamp2 = ktime_to_us(ktime_get()); - dac33->t_stamp1 = dac33->t_stamp2; - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) { + dac33->t_stamp2 = ktime_to_us(ktime_get()); + dac33->t_stamp1 = dac33->t_stamp2; + } dac33_write16(component, DAC33_PREFILL_MSB, DAC33_THRREG(dac33->alarm_threshold)); @@ -682,11 +677,11 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) break; case DAC33_FIFO_MODE7: /* Take the timestamp */ - spin_lock_irqsave(&dac33->lock, flags); - dac33->t_stamp1 = ktime_to_us(ktime_get()); - /* Move back the timestamp with drain time */ - dac33->t_stamp1 -= dac33->mode7_us_to_lthr; - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) { + dac33->t_stamp1 = ktime_to_us(ktime_get()); + /* Move back the timestamp with drain time */ + dac33->t_stamp1 -= dac33->mode7_us_to_lthr; + } dac33_write16(component, DAC33_PREFILL_MSB, DAC33_THRREG(DAC33_MODE7_MARGIN)); @@ -704,14 +699,12 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33) { struct snd_soc_component *component = dac33->component; - unsigned long flags; switch (dac33->fifo_mode) { case DAC33_FIFO_MODE1: /* Take the timestamp */ - spin_lock_irqsave(&dac33->lock, flags); - dac33->t_stamp2 = ktime_to_us(ktime_get()); - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) + dac33->t_stamp2 = ktime_to_us(ktime_get()); dac33_write16(component, DAC33_NSAMPLE_MSB, DAC33_THRREG(dac33->nsample)); @@ -735,7 +728,7 @@ static void dac33_work(struct work_struct *work) dac33 = container_of(work, struct tlv320dac33_priv, work); component = dac33->component; - mutex_lock(&dac33->mutex); + guard(mutex)(&dac33->mutex); switch (dac33->state) { case DAC33_PREFILL: dac33->state = DAC33_PLAYBACK; @@ -757,18 +750,15 @@ static void dac33_work(struct work_struct *work) dac33_write(component, DAC33_FIFO_CTRL_A, reg); break; } - mutex_unlock(&dac33->mutex); } static irqreturn_t dac33_interrupt_handler(int irq, void *dev) { struct snd_soc_component *component = dev; struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component); - unsigned long flags; - spin_lock_irqsave(&dac33->lock, flags); - dac33->t_stamp1 = ktime_to_us(ktime_get()); - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) + dac33->t_stamp1 = ktime_to_us(ktime_get()); /* Do not schedule the workqueue in Mode7 */ if (dac33->fifo_mode != DAC33_FIFO_MODE7) @@ -902,14 +892,13 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream, return -EINVAL; } - mutex_lock(&dac33->mutex); + guard(mutex)(&dac33->mutex); if (!dac33->chip_power) { /* * Chip is not powered yet. * Do the init in the dac33_set_bias_level later. */ - mutex_unlock(&dac33->mutex); return 0; } @@ -1053,8 +1042,6 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream, break; } - mutex_unlock(&dac33->mutex); - return 0; } @@ -1156,21 +1143,20 @@ static snd_pcm_sframes_t dac33_dai_delay( unsigned int time_delta, uthr; int samples_out, samples_in, samples; snd_pcm_sframes_t delay = 0; - unsigned long flags; switch (dac33->fifo_mode) { case DAC33_FIFO_BYPASS: break; case DAC33_FIFO_MODE1: - spin_lock_irqsave(&dac33->lock, flags); - t0 = dac33->t_stamp1; - t1 = dac33->t_stamp2; - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) { + t0 = dac33->t_stamp1; + t1 = dac33->t_stamp2; + } t_now = ktime_to_us(ktime_get()); /* We have not started to fill the FIFO yet, delay is 0 */ if (!t1) - goto out; + return 0; if (t0 > t1) { /* @@ -1230,23 +1216,22 @@ static snd_pcm_sframes_t dac33_dai_delay( } break; case DAC33_FIFO_MODE7: - spin_lock_irqsave(&dac33->lock, flags); - t0 = dac33->t_stamp1; - uthr = dac33->uthr; - spin_unlock_irqrestore(&dac33->lock, flags); + scoped_guard(spinlock_irqsave, &dac33->lock) { + t0 = dac33->t_stamp1; + uthr = dac33->uthr; + } t_now = ktime_to_us(ktime_get()); /* We have not started to fill the FIFO yet, delay is 0 */ if (!t0) - goto out; + return 0; if (t_now <= t0) { /* * Either the timestamps are messed or equal. Report * maximum delay */ - delay = uthr; - goto out; + return uthr; } time_delta = t_now - t0; @@ -1287,7 +1272,7 @@ static snd_pcm_sframes_t dac33_dai_delay( dac33->fifo_mode); break; } -out: + return delay; } -- 2.43.0