diff options
| -rw-r--r-- | sound/soc/codecs/hdmi-codec.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c index 90a892766625..6a0cc8d7e141 100644 --- a/sound/soc/codecs/hdmi-codec.c +++ b/sound/soc/codecs/hdmi-codec.c @@ -281,7 +281,7 @@ struct hdmi_codec_priv { uint8_t eld[MAX_ELD_BYTES]; struct snd_pcm_chmap *chmap_info; unsigned int chmap_idx; - unsigned long busy; + struct mutex lock; }; static const struct snd_soc_dapm_widget hdmi_widgets[] = { @@ -395,8 +395,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream, struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); int ret = 0; - ret = test_and_set_bit(0, &hcp->busy); - if (ret) { + ret = mutex_trylock(&hcp->lock); + if (!ret) { dev_err(dai->dev, "Only one simultaneous stream supported!\n"); return -EINVAL; } @@ -424,7 +424,7 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream, err: /* Release the exclusive lock on error */ - clear_bit(0, &hcp->busy); + mutex_unlock(&hcp->lock); return ret; } @@ -436,7 +436,7 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); - clear_bit(0, &hcp->busy); + mutex_unlock(&hcp->lock); } static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, @@ -773,6 +773,8 @@ static int hdmi_codec_probe(struct platform_device *pdev) return -ENOMEM; hcp->hcd = *hcd; + mutex_init(&hcp->lock); + daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); if (!daidrv) return -ENOMEM; |