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* [PATCH -next v2] tty: serial: imx: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n
@ 2020-09-19  6:32 Yang Yingliang
  0 siblings, 0 replies; only message in thread
From: Yang Yingliang @ 2020-09-19  6:32 UTC (permalink / raw)
  To: linux-serial, linux-kernel; +Cc: gregkh

aarch64-linux-gnu-ld: drivers/tty/serial/imx_earlycon.o: in function `imx_uart_console_early_write':
imx_earlycon.c:(.text+0x84): undefined reference to `uart_console_write'

The driver uses the uart_console_write(), but SERIAL_CORE_CONSOLE is not
selected, so uart_console_write is not defined, then we get the error.
Fix this by selecting SERIAL_CORE_CONSOLE.

Fixes: 699cc4dfd140 ("tty: serial: imx: add imx earlycon driver")
Reported-by: Hulk Robot <>
Signed-off-by: Yang Yingliang <>
 drivers/tty/serial/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 9631ccf43378..1044fc387691 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -521,6 +521,7 @@ config SERIAL_IMX_EARLYCON
 	depends on ARCH_MXC || COMPILE_TEST
 	depends on OF
 	  If you have enabled the earlycon on the Freescale IMX
 	  CPU you can make it the earlycon by answering Y to this option.

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2020-09-19  6:32 [PATCH -next v2] tty: serial: imx: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n Yang Yingliang

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