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| author | Takashi Iwai <tiwai@suse.de> | 2024-02-27 09:52:52 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-28 15:01:21 +0100 |
| commit | 7234795b59f7b0b14569ec46dce56300a4988067 (patch) | |
| tree | dd6c0b8de8945a2f88353be20bd3a5439be45b0e /sound/core | |
| parent | 84bb065b316e8367e14a8824a8f4d21056b10c53 (diff) | |
| download | linux-stable-7234795b59f7b0b14569ec46dce56300a4988067.tar.gz linux-stable-7234795b59f7b0b14569ec46dce56300a4988067.tar.bz2 linux-stable-7234795b59f7b0b14569ec46dce56300a4988067.zip | |
ALSA: jack: Use guard() for locking
We can simplify the code gracefully with new guard() macro and co for
automatic cleanup of locks.
Only the code refactoring, and no functional changes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240227085306.9764-11-tiwai@suse.de
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/jack.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/sound/core/jack.c b/sound/core/jack.c index e0f034e7275c..e08b2c4fbd1a 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -42,11 +42,9 @@ static int snd_jack_dev_disconnect(struct snd_device *device) #ifdef CONFIG_SND_JACK_INPUT_DEV struct snd_jack *jack = device->device_data; - mutex_lock(&jack->input_dev_lock); - if (!jack->input_dev) { - mutex_unlock(&jack->input_dev_lock); + guard(mutex)(&jack->input_dev_lock); + if (!jack->input_dev) return 0; - } /* If the input device is registered with the input subsystem * then we need to use a different deallocator. */ @@ -55,7 +53,6 @@ static int snd_jack_dev_disconnect(struct snd_device *device) else input_free_device(jack->input_dev); jack->input_dev = NULL; - mutex_unlock(&jack->input_dev_lock); #endif /* CONFIG_SND_JACK_INPUT_DEV */ return 0; } @@ -92,11 +89,9 @@ static int snd_jack_dev_register(struct snd_device *device) snprintf(jack->name, sizeof(jack->name), "%s %s", card->shortname, jack->id); - mutex_lock(&jack->input_dev_lock); - if (!jack->input_dev) { - mutex_unlock(&jack->input_dev_lock); + guard(mutex)(&jack->input_dev_lock); + if (!jack->input_dev) return 0; - } jack->input_dev->name = jack->name; @@ -121,7 +116,6 @@ static int snd_jack_dev_register(struct snd_device *device) if (err == 0) jack->registered = 1; - mutex_unlock(&jack->input_dev_lock); return err; } #endif /* CONFIG_SND_JACK_INPUT_DEV */ @@ -586,14 +580,9 @@ EXPORT_SYMBOL(snd_jack_new); void snd_jack_set_parent(struct snd_jack *jack, struct device *parent) { WARN_ON(jack->registered); - mutex_lock(&jack->input_dev_lock); - if (!jack->input_dev) { - mutex_unlock(&jack->input_dev_lock); - return; - } - - jack->input_dev->dev.parent = parent; - mutex_unlock(&jack->input_dev_lock); + guard(mutex)(&jack->input_dev_lock); + if (jack->input_dev) + jack->input_dev->dev.parent = parent; } EXPORT_SYMBOL(snd_jack_set_parent); |