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>
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@ -287,6 +287,9 @@ static int bcm_open(struct hci_uart *hu)
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hu->priv = bcm;
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if (!hu->tty->dev)
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goto out;
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mutex_lock(&bcm_device_lock);
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list_for_each(p, &bcm_device_list) {
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struct bcm_device *dev = list_entry(p, struct bcm_device, list);
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@ -307,7 +310,7 @@ static int bcm_open(struct hci_uart *hu)
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}
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mutex_unlock(&bcm_device_lock);
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out:
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return 0;
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}
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