diff options
| -rw-r--r-- | net/bluetooth/rfcomm/tty.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 9a7a44fc721..b2b1cceb102 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -517,9 +517,10 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err) if (dlc->state == BT_CLOSED) { if (!dev->tty) { if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) { - rfcomm_dev_hold(dev); - rfcomm_dev_del(dev); + if (rfcomm_dev_get(dev->id) == NULL) + return; + rfcomm_dev_del(dev); /* We have to drop DLC lock here, otherwise rfcomm_dev_put() will dead lock if it's the last reference. */ @@ -974,8 +975,12 @@ static void rfcomm_tty_hangup(struct tty_struct *tty) rfcomm_tty_flush_buffer(tty); - if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) + if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) { + if (rfcomm_dev_get(dev->id) == NULL) + return; rfcomm_dev_del(dev); + rfcomm_dev_put(dev); + } } static int rfcomm_tty_read_proc(char *buf, char **start, off_t offset, int len, int *eof, void *unused) |