[PATCH 4.4 036/112] tty: serial: earlycon dependency

Greg Kroah-Hartman
2020-10-27T13:58:06Z

From: Tong Zhang <ztong0001@gmail.com>

[ Upstream commit 0fb9342d06b0f667b915ba58bfefc030e534a218 ]

parse_options() in drivers/tty/serial/earlycon.c calls uart_parse_earlycon
in drivers/tty/serial/serial_core.c therefore selecting SERIAL_EARLYCON
should automatically select SERIAL_CORE, otherwise will result in symbol
not found error during linking if SERIAL_CORE is not configured as builtin

Fixes: 9aac5887595b ("tty/serial: add generic serial earlycon")
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20200828123949.2642-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index f38beb28e7ae6..5c3c86d4fe716 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -9,6 +9,7 @@ menu "Serial drivers"

config SERIAL_EARLYCON
bool
+ depends on SERIAL_CORE
help
Support for early consoles with the earlycon parameter. This enables
the console before standard serial driver is probed. The console is
--
2.25.1