ALSA: ens137x: Use guard() for mutex locks

Replace the manual mutex lock/unlock pairs with guard() for code
simplification.

Only code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

sound/pci/ak4531_codec.c

···
 	int invert = (kcontrol->private_value >> 22) & 1;
 	int val;
 
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	val = (ak4531->regs[reg] >> shift) & mask;
-	mutex_unlock(&ak4531->reg_mutex);
 	if (invert) {
 		val = mask - val;
 	}
···
 		val = mask - val;
 	}
 	val <<= shift;
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	val = (ak4531->regs[reg] & ~(mask << shift)) | val;
 	change = val != ak4531->regs[reg];
 	ak4531->write(ak4531, reg, ak4531->regs[reg] = val);
-	mutex_unlock(&ak4531->reg_mutex);
 	return change;
 }
 
···
 	int invert = (kcontrol->private_value >> 22) & 1;
 	int left, right;
 
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	left = (ak4531->regs[left_reg] >> left_shift) & mask;
 	right = (ak4531->regs[right_reg] >> right_shift) & mask;
-	mutex_unlock(&ak4531->reg_mutex);
 	if (invert) {
 		left = mask - left;
 		right = mask - right;
···
 	}
 	left <<= left_shift;
 	right <<= right_shift;
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	if (left_reg == right_reg) {
 		left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right;
 		change = left != ak4531->regs[left_reg];
···
 		ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
 		ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right);
 	}
-	mutex_unlock(&ak4531->reg_mutex);
 	return change;
 }
 
···
 	int left_shift = (kcontrol->private_value >> 16) & 0x0f;
 	int right_shift = (kcontrol->private_value >> 24) & 0x0f;
 
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1;
 	ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1;
 	ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1;
 	ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1;
-	mutex_unlock(&ak4531->reg_mutex);
 	return 0;
 }
 
···
 	int change;
 	int val1, val2;
 
-	mutex_lock(&ak4531->reg_mutex);
+	guard(mutex)(&ak4531->reg_mutex);
 	val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift));
 	val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift));
 	val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
···
 	change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
 	ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
 	ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
-	mutex_unlock(&ak4531->reg_mutex);
 	return change;
 }
 

sound/pci/ens1370.c

···
 	unsigned int t, x, flag;
 
 	flag = is_ev1938(ensoniq) ? EV_1938_CODEC_MAGIC : 0;
-	mutex_lock(&ensoniq->src_mutex);
+	guard(mutex)(&ensoniq->src_mutex);
 	for (t = 0; t < POLL_COUNT; t++) {
 		if (!(inl(ES_REG(ensoniq, 1371_CODEC)) & ES_1371_CODEC_WIP)) {
 			/* save the current state for latter */
···
 			/* restore SRC reg */
 			snd_es1371_wait_src_ready(ensoniq);
 			outl(x, ES_REG(ensoniq, 1371_SMPRATE));
-			mutex_unlock(&ensoniq->src_mutex);
 			return;
 		}
 	}
-	mutex_unlock(&ensoniq->src_mutex);
 	dev_err(ensoniq->card->dev, "codec write timeout at 0x%lx [0x%x]\n",
 		   ES_REG(ensoniq, 1371_CODEC), inl(ES_REG(ensoniq, 1371_CODEC)));
 }
···
 {
 	unsigned int n, truncm, freq;
 
-	mutex_lock(&ensoniq->src_mutex);
+	guard(mutex)(&ensoniq->src_mutex);
 	n = rate / 3000;
 	if ((1 << n) & ((1 << 15) | (1 << 13) | (1 << 11) | (1 << 9)))
 		n--;
···
 	snd_es1371_src_write(ensoniq, ES_SMPREG_ADC + ES_SMPREG_VFREQ_FRAC, freq & 0x7fff);
 	snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC, n << 8);
 	snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC + 1, n << 8);
-	mutex_unlock(&ensoniq->src_mutex);
 }
 
 static void snd_es1371_dac1_rate(struct ensoniq * ensoniq, unsigned int rate)
 {
 	unsigned int freq, r;
 
-	mutex_lock(&ensoniq->src_mutex);
+	guard(mutex)(&ensoniq->src_mutex);
 	freq = DIV_ROUND_CLOSEST(rate << 15, 3000);
 	r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
 						   ES_1371_DIS_P2 | ES_1371_DIS_R1)) |
···
 	r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
 						   ES_1371_DIS_P2 | ES_1371_DIS_R1));
 	outl(r, ES_REG(ensoniq, 1371_SMPRATE));
-	mutex_unlock(&ensoniq->src_mutex);
 }
 
 static void snd_es1371_dac2_rate(struct ensoniq * ensoniq, unsigned int rate)
 {
 	unsigned int freq, r;
 
-	mutex_lock(&ensoniq->src_mutex);
+	guard(mutex)(&ensoniq->src_mutex);
 	freq = DIV_ROUND_CLOSEST(rate << 15, 3000);
 	r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
 						   ES_1371_DIS_P1 | ES_1371_DIS_R1)) |
···
 	r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
 						   ES_1371_DIS_P1 | ES_1371_DIS_R1));
 	outl(r, ES_REG(ensoniq, 1371_SMPRATE));
-	mutex_unlock(&ensoniq->src_mutex);
 }
 
 #endif /* CHIP1371 */