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: 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.3
Cc: Frederic Danis <frederic.danis@xxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/bluetooth/hci_bcm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 5262a2077d7a..11f30e5cec2c 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -287,6 +287,9 @@ static int bcm_open(struct hci_uart *hu)
hu->priv = bcm;
+ if (!hu->tty->dev)
+ goto out;
+
mutex_lock(&bcm_device_lock);
list_for_each(p, &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);
-
+out:
return 0;
}
--
2.12.2
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