Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 21:21:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

ALSA: hrtimer: Use guard() for locking

Browse Source 
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/20240227085306.9764-5-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2024-02-27 09:52:46 +01:00
parent beb45974dd
commit b04892691d
1 changed files with 11 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
sound/core/hrtimer.c
View File

@ -35,12 +35,12 @@ static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt)
unsigned long ticks;
enum hrtimer_restart ret = HRTIMER_NORESTART;
spin_lock(&t->lock);
if (!t->running)
goto out; /* fast path */
stime->in_callback = true;
ticks = t->sticks;
spin_unlock(&t->lock);
scoped_guard(spinlock, &t->lock) {
if (!t->running)
return HRTIMER_NORESTART; /* fast path */
stime->in_callback = true;
ticks = t->sticks;
}
/* calculate the drift */
delta = ktime_sub(hrt->base->get_time(), hrtimer_get_expires(hrt));
@ -49,15 +49,13 @@ static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt)
snd_timer_interrupt(stime->timer, ticks);
spin_lock(&t->lock);
guard(spinlock)(&t->lock);
if (t->running) {
hrtimer_add_expires_ns(hrt, t->sticks * resolution);
ret = HRTIMER_RESTART;
}
stime->in_callback = false;
out:
spin_unlock(&t->lock);
return ret;
}
@ -80,10 +78,10 @@ static int snd_hrtimer_close(struct snd_timer *t)
struct snd_hrtimer *stime = t->private_data;
if (stime) {
spin_lock_irq(&t->lock);
t->running = 0; /* just to be sure */
stime->in_callback = 1; /* skip start/stop */
spin_unlock_irq(&t->lock);
scoped_guard(spinlock_irq, &t->lock) {
t->running = 0; /* just to be sure */
stime->in_callback = 1; /* skip start/stop */
}
hrtimer_cancel(&stime->hrt);
kfree(stime);