linux-kernel - Re: [PATCH -next] tty: serial: imx: fix link error with CONFIG_SERIAL_CORE

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Date:   Fri, 18 Sep 2020 13:16:58 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] tty: serial: imx: fix link error with
 CONFIG_SERIAL_CORE_CONSOLE=n

On Fri, Sep 18, 2020 at 05:13:05PM +0800, Yang Yingliang wrote:
> Fix the link error by selecting SERIAL_CORE_CONSOLE.
> 
> 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'
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> ---
>  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
>  	select SERIAL_EARLYCON
> +	select SERIAL_CORE_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.
> -- 
> 2.25.1
> 

What caused this build error to start happening?  Any pointers to the
specific commit?

thanks,

greg k-h