linux-kernel - Re: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for Lantiq serial driver

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Date:   Wed, 6 May 2020 15:00:34 +0800
From:   "Tanwar, Rahul" <rahul.tanwar@...ux.intel.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        andriy.shevchenko@...el.com
Subject: Re: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for
 Lantiq serial driver


On 6/5/2020 2:41 pm, Greg KH wrote:
> On Wed, May 06, 2020 at 12:49:57PM +0800, Tanwar, Rahul wrote:
>> On 5/5/2020 10:25 pm, Greg KH wrote:
>>> On Mon, May 04, 2020 at 04:03:52PM +0800, Rahul Tanwar wrote:
>>>> Lantiq serial driver/IP is reused for a x86 based SoC as well.
>>>> Update the Kconfig accordingly.
>>>>
>>>> Signed-off-by: Rahul Tanwar <rahul.tanwar@...ux.intel.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 0aea76cd67ff..4b0a7b98f8c7 100644
>>>> --- a/drivers/tty/serial/Kconfig
>>>> +++ b/drivers/tty/serial/Kconfig
>>>> @@ -1035,7 +1035,7 @@ config SERIAL_SIFIVE_CONSOLE
>>>>  
>>>>  config SERIAL_LANTIQ
>>>>  	bool "Lantiq serial driver"
>>>> -	depends on LANTIQ
>>>> +	depends on (LANTIQ || X86) || COMPILE_TEST
>>>>  	select SERIAL_CORE
>>>>  	select SERIAL_CORE_CONSOLE
>>>>  	select SERIAL_EARLYCON
>>>> -- 
>>>> 2.11.0
>>>>
>>> Any reason this can't also be a module?
>> Thanks a lot for accepting the patch. This driver is also used for
>> console during bootup so we always have it as built in.
> So no generic kernel images can ever be made for this driver?  That's
> not good, what about systems that have this serial port but does not
> care about the console?
>
> That's just ensuring that it will not be built into any distro kernel
> images, I suggest fixing this up please.

I understand your concern. I will send out another incremental patch
series to fix it assuming that this Kconfig change is already merged
in tty tree. Thanks.

Regards,
Rahul

> thanks,
>
> greg k-h