serial_core: Unregister console in uart_remove_one_port()
If the serial port being removed is used as a console, it must also be
unregistered from the console subsystem using unregister_console().
uart_ops.release_port() will release resources (e.g. iounmap() the serial
port registers), causing a crash on subsequent kernel output if the console
is still registered.
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index ece2049..8ece7f1 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -2677,6 +2677,12 @@
tty_vhangup(port->tty);
/*
+ * If the port is used as a console, unregister it
+ */
+ if (uart_console(uport))
+ unregister_console(uport->cons);
+
+ /*
* Free the port IO and memory resources, if any.
*/
if (uport->type != PORT_UNKNOWN)
