ASoC: sst_platform: add hw_free callback to fix resource leak

Signed-off-by: xingchao <xingchao.wang@intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/soc/mid-x86/sst_platform.c b/sound/soc/mid-x86/sst_platform.c
index d567c322a2fb..6b1f9d3bf34e 100644
--- a/sound/soc/mid-x86/sst_platform.c
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -376,6 +376,11 @@ static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream,
         return 0;
 }
 
+static int sst_platform_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+        return snd_pcm_lib_free_pages(substream);
+}
+
 static struct snd_pcm_ops sst_platform_ops = {
         .open = sst_platform_open,
         .close = sst_platform_close,
@@ -384,6 +389,7 @@ static struct snd_pcm_ops sst_platform_ops = {
         .trigger = sst_platform_pcm_trigger,
         .pointer = sst_platform_pcm_pointer,
         .hw_params = sst_platform_pcm_hw_params,
+        .hw_free = sst_platform_pcm_hw_free,
 };
 
 static void sst_pcm_free(struct snd_pcm *pcm)