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| author | Takashi Iwai <tiwai@suse.de> | 2024-02-27 09:53:00 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-28 15:01:22 +0100 |
| commit | 6487e363714c28c4b62ac149e7d907cfeeedb3ad (patch) | |
| tree | 843bc62373a8dab22ea406c963fd1c9ff3a8d01d /sound/core | |
| parent | 45bab301d80b94790c1d9e98ac903aeb373d5f36 (diff) | |
| download | lwn-6487e363714c28c4b62ac149e7d907cfeeedb3ad.tar.gz lwn-6487e363714c28c4b62ac149e7d907cfeeedb3ad.zip | |
ALSA: seq: ump: 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/20240227085306.9764-19-tiwai@suse.de
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/seq/seq_ump_client.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/sound/core/seq/seq_ump_client.c b/sound/core/seq/seq_ump_client.c index ccac2d3a9fbc..c627d72f7fe2 100644 --- a/sound/core/seq/seq_ump_client.c +++ b/sound/core/seq/seq_ump_client.c @@ -115,21 +115,19 @@ static int seq_ump_process_event(struct snd_seq_event *ev, int direct, static int seq_ump_client_open(struct seq_ump_client *client, int dir) { struct snd_ump_endpoint *ump = client->ump; - int err = 0; + int err; - mutex_lock(&ump->open_mutex); + guard(mutex)(&ump->open_mutex); if (dir == STR_OUT && !client->opened[dir]) { err = snd_rawmidi_kernel_open(&ump->core, 0, SNDRV_RAWMIDI_LFLG_OUTPUT | SNDRV_RAWMIDI_LFLG_APPEND, &client->out_rfile); if (err < 0) - goto unlock; + return err; } client->opened[dir]++; - unlock: - mutex_unlock(&ump->open_mutex); - return err; + return 0; } /* close the rawmidi */ @@ -137,11 +135,10 @@ static int seq_ump_client_close(struct seq_ump_client *client, int dir) { struct snd_ump_endpoint *ump = client->ump; - mutex_lock(&ump->open_mutex); + guard(mutex)(&ump->open_mutex); if (!--client->opened[dir]) if (dir == STR_OUT) snd_rawmidi_kernel_release(&client->out_rfile); - mutex_unlock(&ump->open_mutex); return 0; } |