diff options
author | Takashi Iwai <tiwai@suse.de> | 2009-12-21 11:21:15 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2009-12-21 11:21:15 +0100 |
commit | de8853bc38ceab1fa7e7f723b21430d4aad60fea (patch) | |
tree | 5084ef51866fd1767324f8dc8eb36e97c55350f5 /sound/core/hrtimer.c | |
parent | f5de24b06aa46427500d0fdbe8616b73a71d8c28 (diff) | |
parent | 440b004cf953bec2bc8cd91c64ae707fd7e25327 (diff) |
Merge remote branch 'alsa/fixes' into fix/hda
Diffstat (limited to 'sound/core/hrtimer.c')
-rw-r--r-- | sound/core/hrtimer.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c index 34c7d48f506..7f4d744ae40 100644 --- a/sound/core/hrtimer.c +++ b/sound/core/hrtimer.c @@ -37,14 +37,22 @@ static unsigned int resolution; struct snd_hrtimer { struct snd_timer *timer; struct hrtimer hrt; + atomic_t running; }; static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt) { struct snd_hrtimer *stime = container_of(hrt, struct snd_hrtimer, hrt); struct snd_timer *t = stime->timer; + + if (!atomic_read(&stime->running)) + return HRTIMER_NORESTART; + hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution)); snd_timer_interrupt(stime->timer, t->sticks); + + if (!atomic_read(&stime->running)) + return HRTIMER_NORESTART; return HRTIMER_RESTART; } @@ -58,6 +66,7 @@ static int snd_hrtimer_open(struct snd_timer *t) hrtimer_init(&stime->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL); stime->timer = t; stime->hrt.function = snd_hrtimer_callback; + atomic_set(&stime->running, 0); t->private_data = stime; return 0; } @@ -78,16 +87,18 @@ static int snd_hrtimer_start(struct snd_timer *t) { struct snd_hrtimer *stime = t->private_data; + atomic_set(&stime->running, 0); + hrtimer_cancel(&stime->hrt); hrtimer_start(&stime->hrt, ns_to_ktime(t->sticks * resolution), HRTIMER_MODE_REL); + atomic_set(&stime->running, 1); return 0; } static int snd_hrtimer_stop(struct snd_timer *t) { struct snd_hrtimer *stime = t->private_data; - - hrtimer_cancel(&stime->hrt); + atomic_set(&stime->running, 0); return 0; } |