linux-kernel - Re: [PATCH] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for SERIAL_FSL_LPUART

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Message-ID: <0f8a8857-5e18-e49a-0361-197b4bc892ab@infradead.org>
Date:   Sat, 25 Feb 2023 09:46:37 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Tom Rix <trix@...hat.com>, gregkh@...uxfoundation.org,
        jirislaby@...nel.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for
 SERIAL_FSL_LPUART_CONSOLE

Hi--

On 2/25/23 09:39, Tom Rix wrote:
> A rand config causes this link error
> ld: drivers/tty/serial/earlycon.o: in function `parse_options':
> drivers/tty/serial/earlycon.c:99: undefined reference to `uart_parse_earlycon'
> 
> The rand config has
> CONFIG_SERIAL_CORE=m
> CONFIG_SERIAL_EARLYCON=y
> CONFIG_SERIAL_FSL_LPUART=m
> CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
> 
> SERIAL_FSL_LPUART should have been selected instead of depends on-ed.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>  drivers/tty/serial/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
> index 625358f44419..b24d74d389fc 100644
> --- a/drivers/tty/serial/Kconfig
> +++ b/drivers/tty/serial/Kconfig
> @@ -1313,7 +1313,7 @@ config SERIAL_FSL_LPUART
>  
>  config SERIAL_FSL_LPUART_CONSOLE
>  	bool "Console on Freescale lpuart serial port"
> -	depends on SERIAL_FSL_LPUART
> +	select SERIAL_FSL_LPUART

Most other _CONSOLE Kconfig have:

	depends on SERIAL_FSL_LPUART=y

e.g.

but I noticed a few others with a similar problem.

>  	select SERIAL_CORE_CONSOLE
>  	select SERIAL_EARLYCON
>  	help

-- 
~Randy