diff options
| -rw-r--r-- | net/bluetooth/hci_sysfs.c | 17 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/tty.c | 3 |
2 files changed, 19 insertions, 1 deletions
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c index cad510309dcf..17f7fb720553 100644 --- a/net/bluetooth/hci_sysfs.c +++ b/net/bluetooth/hci_sysfs.c @@ -316,9 +316,26 @@ void hci_conn_add_sysfs(struct hci_conn *conn) schedule_work(&conn->work); } +static int __match_tty(struct device *dev, void *data) +{ + /* The rfcomm tty device will possibly retain even when conn + * is down, and sysfs doesn't support move zombie device, + * so we should move the device before conn device is destroyed. + * Due to the only child device of hci_conn dev is rfcomm + * tty_dev, here just return 1 + */ + return 1; +} + static void del_conn(struct work_struct *work) { + struct device *dev; struct hci_conn *conn = container_of(work, struct hci_conn, work); + + while (dev = device_find_child(&conn->dev, NULL, __match_tty)) { + device_move(dev, NULL); + put_device(dev); + } device_del(&conn->dev); put_device(&conn->dev); } diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index a6a758dd1f7d..788c70321858 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -696,7 +696,8 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp) BT_DBG("tty %p dev %p dlc %p opened %d", tty, dev, dev->dlc, dev->opened); if (--dev->opened == 0) { - device_move(dev->tty_dev, NULL); + if (dev->tty_dev->parent) + device_move(dev->tty_dev, NULL); /* Close DLC and dettach TTY */ rfcomm_dlc_close(dev->dlc, 0); |