6.6-stable review patch. If anyone has any objections, please let me know.
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From: Takashi Iwai tiwai@suse.de
[ Upstream commit 7234795b59f7b0b14569ec46dce56300a4988067 ]
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 Stable-dep-of: 495000a38634 ("ALSA: core: Remove debugfs at disconnection") Signed-off-by: Sasha Levin sashal@kernel.org --- sound/core/jack.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-)
diff --git a/sound/core/jack.c b/sound/core/jack.c index e0f034e7275cd..e08b2c4fbd1a5 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);