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Diffstat (limited to 'sound/soc/mxs/mxs-pcm.c')
-rw-r--r--sound/soc/mxs/mxs-pcm.c28
1 files changed, 8 insertions, 20 deletions
diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c
index 06c18ecffbb4..5b8c8d314060 100644
--- a/sound/soc/mxs/mxs-pcm.c
+++ b/sound/soc/mxs/mxs-pcm.c
@@ -85,8 +85,7 @@ static bool filter(struct dma_chan *chan, void *param)
return true;
}
-static int mxs_dma_alloc(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+static int mxs_dma_alloc(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -112,11 +111,7 @@ static int snd_mxs_pcm_hw_params(struct snd_pcm_substream *substream,
struct mxs_pcm_runtime_data *iprtd = runtime->private_data;
unsigned long dma_addr;
struct dma_chan *chan;
- int ret;
- ret = mxs_dma_alloc(substream, params);
- if (ret)
- return ret;
chan = iprtd->dma_chan;
iprtd->periods = params_periods(params);
@@ -143,19 +138,6 @@ static int snd_mxs_pcm_hw_params(struct snd_pcm_substream *substream,
return 0;
}
-static int snd_mxs_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mxs_pcm_runtime_data *iprtd = runtime->private_data;
-
- if (iprtd->dma_chan) {
- dma_release_channel(iprtd->dma_chan);
- iprtd->dma_chan = NULL;
- }
-
- return 0;
-}
-
static int snd_mxs_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -208,6 +190,12 @@ static int snd_mxs_open(struct snd_pcm_substream *substream)
return ret;
}
+ ret = mxs_dma_alloc(substream);
+ if (ret) {
+ kfree(iprtd);
+ return ret;
+ }
+
snd_soc_set_runtime_hwparams(substream, &snd_mxs_hardware);
return 0;
@@ -218,6 +206,7 @@ static int snd_mxs_close(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
struct mxs_pcm_runtime_data *iprtd = runtime->private_data;
+ dma_release_channel(iprtd->dma_chan);
kfree(iprtd);
return 0;
@@ -239,7 +228,6 @@ static struct snd_pcm_ops mxs_pcm_ops = {
.close = snd_mxs_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_mxs_pcm_hw_params,
- .hw_free = snd_mxs_pcm_hw_free,
.trigger = snd_mxs_pcm_trigger,
.pointer = snd_mxs_pcm_pointer,
.mmap = snd_mxs_pcm_mmap,