2020-05-04 08:06:06

by Rahul Tanwar

[permalink] [raw]
Subject: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for Lantiq serial driver

Lantiq serial driver/IP is reused for a x86 based SoC as well.
Update the Kconfig accordingly.

Signed-off-by: Rahul Tanwar <[email protected]>
---
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


2020-05-05 14:29:35

by Greg Kroah-Hartman

[permalink] [raw]
Subject: Re: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for Lantiq serial driver

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 <[email protected]>
> ---
> 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,

greg k-h

2020-05-06 04:52:29

by Rahul Tanwar

[permalink] [raw]
Subject: Re: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for Lantiq serial driver


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 <[email protected]>
>> ---
>> 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.

Regards,
Rahul

> thanks,
>
> greg k-h

2020-05-06 10:51:56

by Rahul Tanwar

[permalink] [raw]
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 <[email protected]>
>>>> ---
>>>> 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

2020-05-06 11:22:51

by Greg Kroah-Hartman

[permalink] [raw]
Subject: Re: [PATCH] serial: lantiq: Add x86 in Kconfig dependencies for Lantiq serial driver

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 <[email protected]>
> >> ---
> >> 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.

thanks,

greg k-h