diff options
| author | Takashi Iwai <tiwai@suse.de> | 2024-02-27 09:53:05 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-28 15:01:22 +0100 |
| commit | 3923de04c81733b30b8ed667569632272fdfed9a (patch) | |
| tree | bbe980932029449da9683f67a56972def45b0137 /sound/core | |
| parent | ALSA: pcm: Use guard() for PCM stream locks (diff) | |
| download | linux-3923de04c81733b30b8ed667569632272fdfed9a.tar.xz linux-3923de04c81733b30b8ed667569632272fdfed9a.zip | |
ALSA: pcm: oss: Use guard() for setup
The setup_mutex in PCM oss code can be simplified with guard().
(params_lock is tough and not trivial to covert, though.)
Only the code refactoring, and no functional changes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240227085306.9764-24-tiwai@suse.de
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/oss/pcm_oss.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 49ea092e90f9..7386982cf40e 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -2333,7 +2333,7 @@ static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, { struct snd_pcm_oss_setup *setup; - mutex_lock(&pcm->streams[stream].oss.setup_mutex); + guard(mutex)(&pcm->streams[stream].oss.setup_mutex); do { for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { @@ -2344,7 +2344,6 @@ static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, out: if (setup) *rsetup = *setup; - mutex_unlock(&pcm->streams[stream].oss.setup_mutex); } static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) @@ -2950,7 +2949,7 @@ static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, { struct snd_pcm_str *pstr = entry->private_data; struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; - mutex_lock(&pstr->oss.setup_mutex); + guard(mutex)(&pstr->oss.setup_mutex); while (setup) { snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", setup->task_name, @@ -2964,7 +2963,6 @@ static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, setup->nosilence ? " no-silence" : ""); setup = setup->next; } - mutex_unlock(&pstr->oss.setup_mutex); } static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) @@ -2990,12 +2988,11 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, struct snd_pcm_oss_setup *setup, *setup1, template; while (!snd_info_get_line(buffer, line, sizeof(line))) { - mutex_lock(&pstr->oss.setup_mutex); + guard(mutex)(&pstr->oss.setup_mutex); memset(&template, 0, sizeof(template)); ptr = snd_info_get_str(task_name, line, sizeof(task_name)); if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { snd_pcm_oss_proc_free_setup_list(pstr); - mutex_unlock(&pstr->oss.setup_mutex); continue; } for (setup = pstr->oss.setup_list; setup; setup = setup->next) { @@ -3035,7 +3032,6 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, setup = kmalloc(sizeof(*setup), GFP_KERNEL); if (! setup) { buffer->error = -ENOMEM; - mutex_unlock(&pstr->oss.setup_mutex); return; } if (pstr->oss.setup_list == NULL) @@ -3049,12 +3045,10 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, if (! template.task_name) { kfree(setup); buffer->error = -ENOMEM; - mutex_unlock(&pstr->oss.setup_mutex); return; } } *setup = template; - mutex_unlock(&pstr->oss.setup_mutex); } } |