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ASoC: imx-ssi: do not call hrtimer_disable in trigger function 

Doing so causes a deadlock, so just signal the timer to stop
using an atomic variable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Sascha Hauer 2010-04-14 09:17:30 +02:00 committed by Mark Brown
parent 565a79f74a
commit 8392609969
1 changed files with 8 additions and 2 deletions
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10
sound/soc/imx/imx-pcm-fiq.c
View File

@ -41,6 +41,7 @@ struct imx_pcm_runtime_data {
struct hrtimer hrt;
int poll_time_ns;
struct snd_pcm_substream *substream;
atomic_t running;
};
static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt)
@ -52,6 +53,9 @@ static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt)
struct pt_regs regs;
unsigned long delta;
if (!atomic_read(&iprtd->running))
return HRTIMER_NORESTART;
get_fiq_regs(&regs);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
@ -129,6 +133,7 @@ static int snd_imx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
atomic_set(&iprtd->running, 1);
hrtimer_start(&iprtd->hrt, ns_to_ktime(iprtd->poll_time_ns),
HRTIMER_MODE_REL);
if (++fiq_enable == 1)
@ -139,11 +144,11 @@ static int snd_imx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
hrtimer_cancel(&iprtd->hrt);
atomic_set(&iprtd->running, 0);
if (--fiq_enable == 0)
disable_fiq(imx_pcm_fiq);
break;
default:
return -EINVAL;
@ -190,6 +195,7 @@ static int snd_imx_open(struct snd_pcm_substream *substream)
iprtd->substream = substream;
atomic_set(&iprtd->running, 0);
hrtimer_init(&iprtd->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
iprtd->hrt.function = snd_hrtimer_callback;