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Diffstat (limited to 'sound/usb/card.c')
-rw-r--r--sound/usb/card.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 7ecd0e8..f61ebb1 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -591,18 +591,19 @@ static void snd_usb_audio_disconnect(struct usb_device *dev,
{
struct snd_card *card;
struct list_head *p;
+ bool was_shutdown;
if (chip == (void *)-1L)
return;
card = chip->card;
down_write(&chip->shutdown_rwsem);
+ was_shutdown = chip->shutdown;
chip->shutdown = 1;
up_write(&chip->shutdown_rwsem);
mutex_lock(&register_mutex);
- chip->num_interfaces--;
- if (chip->num_interfaces <= 0) {
+ if (!was_shutdown) {
struct snd_usb_endpoint *ep;
snd_card_disconnect(card);
@@ -622,6 +623,10 @@ static void snd_usb_audio_disconnect(struct usb_device *dev,
list_for_each(p, &chip->mixer_list) {
snd_usb_mixer_disconnect(p);
}
+ }
+
+ chip->num_interfaces--;
+ if (chip->num_interfaces <= 0) {
usb_chip[chip->index] = NULL;
mutex_unlock(&register_mutex);
snd_card_free_when_closed(card);