Bluetooth: hci_bcm: add missing tty-device sanity check
commit95065a61e9
upstream. Make sure to check the tty-device pointer before looking up the sibling platform device to avoid dereferencing a NULL-pointer when the tty is one end of a Unix98 pty. Fixes:0395ffc1ee
("Bluetooth: hci_bcm: Add PM for BCM devices") Cc: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
518ca84479
commit
f2f6d77fab
|
@ -287,6 +287,9 @@ static int bcm_open(struct hci_uart *hu)
|
||||||
|
|
||||||
hu->priv = bcm;
|
hu->priv = bcm;
|
||||||
|
|
||||||
|
if (!hu->tty->dev)
|
||||||
|
goto out;
|
||||||
|
|
||||||
mutex_lock(&bcm_device_lock);
|
mutex_lock(&bcm_device_lock);
|
||||||
list_for_each(p, &bcm_device_list) {
|
list_for_each(p, &bcm_device_list) {
|
||||||
struct bcm_device *dev = list_entry(p, struct bcm_device, list);
|
struct bcm_device *dev = list_entry(p, struct bcm_device, list);
|
||||||
|
@ -307,7 +310,7 @@ static int bcm_open(struct hci_uart *hu)
|
||||||
}
|
}
|
||||||
|
|
||||||
mutex_unlock(&bcm_device_lock);
|
mutex_unlock(&bcm_device_lock);
|
||||||
|
out:
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue