serial: mcf: add sysrq capability

After some unsuccessful attempts to use sysrq over console, figured
out that port->has_sysrq should likely be enabled, as per other
architectures, this when CONFIG_SERIAL_MCF_CONSOLE is also enabled.

Tested some magic sysrq commands (h, p, t, b), they works now
properly. Commands works inside 5 secs after BREAK is sent, as
expected.

Signed-off-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Link: https://lore.kernel.org/r/20201002140545.477481-1-angelo.dureghello@timesys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index 7dbfb4cde124be4c6c13e1f4d08ac18cbd534beb..09c88c48fb7b3e8cc8a380ae2cb5429fb4b1c91c 100644 (file)
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -632,6 +632,7 @@ static int mcf_probe(struct platform_device *pdev)
                port->ops = &mcf_uart_ops;
                port->flags = UPF_BOOT_AUTOCONF;
                port->rs485_config = mcf_config_rs485;
+               port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_MCF_CONSOLE);
 
                uart_add_one_port(&mcf_driver, port);
        }