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-rw-r--r--sound/core/compress_offload.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 26b5e245b074..a5b09e75e787 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -171,7 +171,8 @@ static int snd_compr_free(struct inode *inode, struct file *f)
}
data->stream.ops->free(&data->stream);
- kfree(data->stream.runtime->buffer);
+ if (!data->stream.runtime->dma_buffer_p)
+ kfree(data->stream.runtime->buffer);
kfree(data->stream.runtime);
kfree(data);
return 0;
@@ -505,7 +506,7 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream,
struct snd_compr_params *params)
{
unsigned int buffer_size;
- void *buffer;
+ void *buffer = NULL;
buffer_size = params->buffer.fragment_size * params->buffer.fragments;
if (stream->ops->copy) {
@@ -514,7 +515,18 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream,
* the data from core
*/
} else {
- buffer = kmalloc(buffer_size, GFP_KERNEL);
+ if (stream->runtime->dma_buffer_p) {
+
+ if (buffer_size > stream->runtime->dma_buffer_p->bytes)
+ dev_err(&stream->device->dev,
+ "Not enough DMA buffer");
+ else
+ buffer = stream->runtime->dma_buffer_p->area;
+
+ } else {
+ buffer = kmalloc(buffer_size, GFP_KERNEL);
+ }
+
if (!buffer)
return -ENOMEM;
}