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authorJohan Hovold <johan@kernel.org>2017-03-29 19:15:27 +0300
committerMarcel Holtmann <marcel@holtmann.org>2017-04-12 23:02:39 +0300
commit95065a61e9bf25fb85295127fba893200c2bbbd8 (patch)
tree9a7794d8b5862b3ad1e0a755d778170cc5448a60 /drivers/bluetooth/hci_bcm.c
parent941825e11424f00f9a76c944c16f677aadfe3515 (diff)
downloadlinux-95065a61e9bf25fb85295127fba893200c2bbbd8.tar.xz
Bluetooth: hci_bcm: add missing tty-device sanity check
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@vger.kernel.org> # 4.3 Cc: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/hci_bcm.c')
-rw-r--r--drivers/bluetooth/hci_bcm.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 04fe5535a153..f87bfdfee4ff 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;
}