1 files changed, 3 insertions, 1 deletions

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 1305f7ca02c3..641d7f07392c 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -1821,7 +1821,9 @@ static irqreturn_t snd_echo_interrupt(int irq, void *dev_id)
         /* The hardware doesn't tell us which substream caused the irq,
         thus we have to check all running substreams. */
         for (ss = 0; ss < DSP_MAXPIPES; ss++) {
-                if ((substream = chip->substream[ss])) {
+                substream = chip->substream[ss];
+                if (substream && ((struct audiopipe *)substream->runtime->
+                                private_data)->state == PIPE_STATE_STARTED) {
                         period = pcm_pointer(substream) /
                                 substream->runtime->period_size;
                         if (period != chip->last_period[ss]) {