From 6e982e8f5a23e027e757712b750be4e4dd9d4950 Mon Sep 17 00:00:00 2001 From: bui duc phuc Date: Wed, 8 Jul 2026 19:49:51 +0700 Subject: [PATCH] ASoC: codecs: cs42l42: Use guard() cleanup helpers Clean up the code using guard() helpers for mutex locking and PM runtime management. No functional change intended. Reviewed-by: Cezary Rojewski Reviewed-by: Charles Keepax Signed-off-by: bui duc phuc Link: https://patch.msgid.link/20260708125002.202515-15-phucduc.bui@gmail.com Signed-off-by: Mark Brown --- sound/soc/codecs/cs42l42.c | 56 +++++++++++++++++--------------------- 1 file changed, 25 insertions(+), 31 deletions(-) diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 2652a639a79a..fadf68860601 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -9,6 +9,7 @@ * Author: Michael White */ +#include #include #include #include @@ -565,7 +566,7 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_ struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); /* Prevent race with interrupt handler */ - mutex_lock(&cs42l42->irq_lock); + guard(mutex)(&cs42l42->irq_lock); cs42l42->jack = jk; if (jk) { @@ -581,7 +582,6 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_ break; } } - mutex_unlock(&cs42l42->irq_lock); return 0; } @@ -1668,13 +1668,10 @@ irqreturn_t cs42l42_irq_thread(int irq, void *data) unsigned int current_button_status; unsigned int i; - pm_runtime_get_sync(cs42l42->dev); - mutex_lock(&cs42l42->irq_lock); - if (cs42l42->suspended || !cs42l42->init_done) { - mutex_unlock(&cs42l42->irq_lock); - pm_runtime_put_autosuspend(cs42l42->dev); + guard(pm_runtime_active_auto)(cs42l42->dev); + guard(mutex)(&cs42l42->irq_lock); + if (cs42l42->suspended || !cs42l42->init_done) return IRQ_NONE; - } /* Read sticky registers to clear interurpt */ for (i = 0; i < ARRAY_SIZE(stickies); i++) { @@ -1774,9 +1771,6 @@ irqreturn_t cs42l42_irq_thread(int irq, void *data) } } - mutex_unlock(&cs42l42->irq_lock); - pm_runtime_put_autosuspend(cs42l42->dev); - return IRQ_HANDLED; } EXPORT_SYMBOL_NS_GPL(cs42l42_irq_thread, "SND_SOC_CS42L42_CORE"); @@ -2163,23 +2157,23 @@ int cs42l42_suspend(struct device *dev) * future interrupts. This ensures a safe disable if the interrupt * is shared. */ - mutex_lock(&cs42l42->irq_lock); - cs42l42->suspended = true; + scoped_guard(mutex, &cs42l42->irq_lock) { + cs42l42->suspended = true; - /* Save register values that will be overwritten by shutdown sequence */ - for (i = 0; i < ARRAY_SIZE(cs42l42_shutdown_seq); ++i) { - regmap_read(cs42l42->regmap, cs42l42_shutdown_seq[i].reg, ®); - save_regs[i] = (u8)reg; + /* Save register values that will be overwritten by shutdown sequence */ + for (i = 0; i < ARRAY_SIZE(cs42l42_shutdown_seq); ++i) { + regmap_read(cs42l42->regmap, cs42l42_shutdown_seq[i].reg, ®); + save_regs[i] = (u8)reg; + } + + /* Shutdown codec */ + regmap_multi_reg_write(cs42l42->regmap, + cs42l42_shutdown_seq, + ARRAY_SIZE(cs42l42_shutdown_seq)); + + /* All interrupt sources are now disabled */ } - /* Shutdown codec */ - regmap_multi_reg_write(cs42l42->regmap, - cs42l42_shutdown_seq, - ARRAY_SIZE(cs42l42_shutdown_seq)); - - /* All interrupt sources are now disabled */ - mutex_unlock(&cs42l42->irq_lock); - /* Wait for power-down complete */ msleep(CS42L42_PDN_DONE_TIME_MS); ret = regmap_read_poll_timeout(cs42l42->regmap, @@ -2250,13 +2244,13 @@ void cs42l42_resume_restore(struct device *dev) regcache_cache_only(cs42l42->regmap, false); regcache_mark_dirty(cs42l42->regmap); - mutex_lock(&cs42l42->irq_lock); - /* Sync LATCH_TO_VP first so the VP domain registers sync correctly */ - regcache_sync_region(cs42l42->regmap, CS42L42_MIC_DET_CTL1, CS42L42_MIC_DET_CTL1); - regcache_sync(cs42l42->regmap); + scoped_guard(mutex, &cs42l42->irq_lock) { + /* Sync LATCH_TO_VP first so the VP domain registers sync correctly */ + regcache_sync_region(cs42l42->regmap, CS42L42_MIC_DET_CTL1, CS42L42_MIC_DET_CTL1); + regcache_sync(cs42l42->regmap); - cs42l42->suspended = false; - mutex_unlock(&cs42l42->irq_lock); + cs42l42->suspended = false; + } dev_dbg(dev, "System resumed\n"); }