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authorSascha Hauer <s.hauer@pengutronix.de>2010-04-14 11:17:30 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-04-15 20:02:35 +0400
commit8392609969b3b37a4da5cff08161661f7a8c16af (patch)
tree5302e690e436ee6eb8fd6407db0aa8934d3f54fa /sound
parent565a79f74af96ae90dfec411da14dc38d2cd56bc (diff)
downloadlinux-8392609969b3b37a4da5cff08161661f7a8c16af.tar.xz
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/imx/imx-pcm-fiq.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/soc/imx/imx-pcm-fiq.c b/sound/soc/imx/imx-pcm-fiq.c
index 98ab33109527..ecec332121f2 100644
--- a/sound/soc/imx/imx-pcm-fiq.c
+++ b/sound/soc/imx/imx-pcm-fiq.c
@@ -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;