Hi Eugene,
> Commit 22ad42033b7d2b3d7928fba9f89d1c7f8a3c9581 did not completely fix all
> the possible NULL dereferences. Besides hci_uart_close(), we also need to
> make sure that hdev is valid before calling hci_{unregister,free}_dev().
I don't see any issue. Without HCI_UART_PROTO_SET, the hdev will never
be registered. So no need to protect it twice.
Regards
Marcel
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