From d994b2ba8f74e3c62110f781799144d228ef2a31 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 29 Aug 2025 16:52:52 +0200 Subject: [PATCH] ALSA: sb: Use guard() for mutex locks Replace the manual mutex lock/unlock pairs with guard() for code simplification. Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250829145300.5460-13-tiwai@suse.de --- sound/isa/sb/sb16_csp.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/sound/isa/sb/sb16_csp.c b/sound/isa/sb/sb16_csp.c index 7034072c80d41..7c5072e4a96f7 100644 --- a/sound/isa/sb/sb16_csp.c +++ b/sound/isa/sb/sb16_csp.c @@ -265,14 +265,10 @@ static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file) */ static int snd_sb_csp_use(struct snd_sb_csp * p) { - mutex_lock(&p->access_mutex); - if (p->used) { - mutex_unlock(&p->access_mutex); + guard(mutex)(&p->access_mutex); + if (p->used) return -EAGAIN; - } p->used++; - mutex_unlock(&p->access_mutex); - return 0; } @@ -282,10 +278,8 @@ static int snd_sb_csp_use(struct snd_sb_csp * p) */ static int snd_sb_csp_unuse(struct snd_sb_csp * p) { - mutex_lock(&p->access_mutex); + guard(mutex)(&p->access_mutex); p->used--; - mutex_unlock(&p->access_mutex); - return 0; } -- 2.47.3