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tty: serial: earlycon dependency

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[ 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>
This commit is contained in:
Tong Zhang 2020-08-28 08:39:50 -04:00 committed by Greg Kroah-Hartman
parent 7c37fbe7e3
commit d45b82810b
1 changed files with 1 additions and 0 deletions
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drivers/tty/serial/Kconfig
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@ -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