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-rw-r--r--net/bluetooth/rfcomm/tty.c11
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)