[PATCH v2] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for SERIAL_FSL_LPUART_CONSOLE

[PATCH v2] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for SERIAL_FSL_LPUART_CONSOLE

[Tom Rix]

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.

After applying the configs are
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_FSL_LPUART=y
CONFIG_SERIAL_FSL_LPUART_CONSOLE=y

Signed-off-by: Tom Rix <trix@redhat.com>
---
v2: Add how the configs changed to commit log
---
 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
 	select SERIAL_CORE_CONSOLE
 	select SERIAL_EARLYCON
 	help
-- 
2.27.0

Re: [PATCH v2] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for SERIAL_FSL_LPUART_CONSOLE

[Randy Dunlap]

Hi Tom,

[adding the recent commit signers]

On 2/26/23 06:54, 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.
> 
> After applying the configs are
> CONFIG_SERIAL_CORE=y
> CONFIG_SERIAL_EARLYCON=y
> CONFIG_SERIAL_FSL_LPUART=y
> CONFIG_SERIAL_FSL_LPUART_CONSOLE=y

This works, but I thought that the point of the recent patch was to make the driver modular.

You said:
"commit 5779a072c248db7a40cfd0f5ea958097fd1d9a30 removed the =y. so it could be built as a module."

That's not the same as what is happening here.

I think it would be better to revert the commit mentioned above.

> Signed-off-by: Tom Rix <trix@redhat.com>
> ---
> v2: Add how the configs changed to commit log
> ---
>  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
>  	select SERIAL_CORE_CONSOLE
>  	select SERIAL_EARLYCON
>  	help

-- 
~Randy

Re: [PATCH v2] tty: serial: fsl_lpuart: select SERIAL_FSL_LPUART for SERIAL_FSL_LPUART_CONSOLE

[Tom Rix]

On 2/26/23 7:44 AM, Randy Dunlap wrote:
> Hi Tom,
>
> [adding the recent commit signers]
>
> On 2/26/23 06:54, 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.
>>
>> After applying the configs are
>> CONFIG_SERIAL_CORE=y
>> CONFIG_SERIAL_EARLYCON=y
>> CONFIG_SERIAL_FSL_LPUART=y
>> CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
> This works, but I thought that the point of the recent patch was to make the driver modular.
>
> You said:
> "commit 5779a072c248db7a40cfd0f5ea958097fd1d9a30 removed the =y. so it could be built as a module."
>
> That's not the same as what is happening here.

As you pointed out SERIAL_FSL_LPUART is not tristate so the it likely 
never worked to be modular.

Let me fiddle a bit with this and see, if it doesn't work, I'll submit 
the revert.

Tom

>
> I think it would be better to revert the commit mentioned above.
>
>> Signed-off-by: Tom Rix <trix@redhat.com>
>> ---
>> v2: Add how the configs changed to commit log
>> ---
>>   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
>>   	select SERIAL_CORE_CONSOLE
>>   	select SERIAL_EARLYCON
>>   	help