Ensure snd_avirt_private_free is not called if NULL

We only want to call the snd_avirt_private_free callback if it
is set. Some Audio Paths may only set the private data, and not
the private free callback, so we need to accommodate for this.

Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>

1 files changed, 4 insertions, 4 deletions

diff --git a/core.c b/core.c
index 35998c0..a733118 100644
--- a/core.c
+++ b/core.c
@@ -210,10 +210,10 @@ static void pcm_private_data_free(struct snd_pcm *pcm)
 {
 	struct snd_avirt_private_data *avirt_private_data;
 
-	D_PRINTK("Issuing free to private data struct");
-	if (pcm->private_data) {
-		avirt_private_data = pcm->private_data;
-		if (avirt_private_data->ap_private_data)
+	avirt_private_data = (struct snd_avirt_private_data *)pcm->private_data;
+	if (avirt_private_data) {
+		if (avirt_private_data->ap_private_data &&
+		    avirt_private_data->ap_private_free)
 			avirt_private_data->ap_private_free(pcm);
 	}