1 files changed, 8 insertions, 0 deletions

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index c4995c9f5730..39672f68ce5d 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -148,6 +148,8 @@ static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)
 
 static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up)
 {
+        if (!substream->opened)
+                return;
         if (up) {
                 tasklet_hi_schedule(&substream->runtime->tasklet);
         } else {
@@ -158,6 +160,8 @@ static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *subs
 
 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
 {
+        if (!substream->opened)
+                return;
         substream->ops->trigger(substream, up);
         if (!up && substream->runtime->event)
                 tasklet_kill(&substream->runtime->tasklet);
@@ -857,6 +861,8 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
         int result = 0, count1;
         struct snd_rawmidi_runtime *runtime = substream->runtime;
 
+        if (!substream->opened)
+                return -EBADFD;
         if (runtime->buffer == NULL) {
                 snd_printd("snd_rawmidi_receive: input is not active!!!\n");
                 return -EINVAL;
@@ -1126,6 +1132,8 @@ int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
 int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
                          unsigned char *buffer, int count)
 {
+        if (!substream->opened)
+                return -EBADFD;
         count = snd_rawmidi_transmit_peek(substream, buffer, count);
         if (count < 0)
                 return count;