diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c
index ba441ed1a876727c70871524e2bf26fe55889a6d..8f59ff3e7a175f12797ad0296e32dc01027afefc 100644
--- a/drivers/staging/line6/capture.c
+++ b/drivers/staging/line6/capture.c
@@ -316,8 +316,11 @@ static int snd_line6_capture_hw_params(struct snd_pcm_substream *substream,
 	}
 	/* -- [FD] end */
 
-	line6pcm->buffer_in = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
-				      line6pcm->max_packet_size, GFP_KERNEL);
+	/* We may be invoked multiple times in a row so allocate once only */
+	if (!line6pcm->buffer_in)
+		line6pcm->buffer_in =
+			kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
+				line6pcm->max_packet_size, GFP_KERNEL);
 
 	if (!line6pcm->buffer_in) {
 		dev_err(line6pcm->line6->ifcdev,
diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index e495b32ed7dffffcd485e0d1985c6f6ead033160..ed1b9bd93ff8d7ef1bb594bdd5bf5ddaa6f728fd 100644
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -462,8 +462,11 @@ static int snd_line6_playback_hw_params(struct snd_pcm_substream *substream,
 	}
 	/* -- [FD] end */
 
-	line6pcm->buffer_out = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
-				       line6pcm->max_packet_size, GFP_KERNEL);
+	/* We may be invoked multiple times in a row so allocate once only */
+	if (!line6pcm->buffer_out)
+		line6pcm->buffer_out =
+			kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
+				line6pcm->max_packet_size, GFP_KERNEL);
 
 	if (!line6pcm->buffer_out) {
 		dev_err(line6pcm->line6->ifcdev,