[PATCH 5.9 106/133] tty: serial: imx: enable earlycon by default if IMX_SERIAL_CONSOLE is enabled

From: Greg Kroah-Hartman
Date: Mon Nov 09 2020 - 08:20:54 EST


From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>

commit 427627a23c3e86e31113f9db9bfdca41698a0ee5 upstream.

Since 699cc4dfd140 (tty: serial: imx: add imx earlycon driver), the earlycon
part of imx serial is a separate driver and isn't necessarily enabled anymore
when the console is enabled. This causes users to loose the earlycon
functionality when upgrading their kenrel configuration via oldconfig.

Enable earlycon by default when IMX_SERIAL_CONSOLE is enabled.

Fixes: 699cc4dfd140 (tty: serial: imx: add imx earlycon driver)
Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
Reviewed-by: Fugang Duan <fugang.duan@xxxxxxx>
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201105204026.1818219-1-l.stach@xxxxxxxxxxxxxx
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/tty/serial/Kconfig | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -522,6 +522,7 @@ config SERIAL_IMX_EARLYCON
depends on OF
select SERIAL_EARLYCON
select SERIAL_CORE_CONSOLE
+ default y if SERIAL_IMX_CONSOLE
help
If you have enabled the earlycon on the Freescale IMX
CPU you can make it the earlycon by answering Y to this option.