Re: [PATCH] ACPI / ARM64: Remove EXPERT dependency for ACPI on ARM64

[Al Stone <astone@redhat.com>]

On 03/30/2016 11:58 AM, Mark Brown wrote:
> When ACPI was originally merged for arm64 it had only been tested on
> emulators and not on real physical platforms and no platforms were
> relying on it.  This meant that there were concerns that there might be
> serious issues attempting to use it on practical systems so it had a
> dependency on EXPERT added to warn people that it was in an early stage
> of development with very little practical testing.  Since then things
> have moved on a bit.  We have seen people testing on real hardware and
> now have people starting to produce some platforms (the most prominent
> being the 96boards Cello) which only have ACPI support and which build
> and run to some useful extent with mainline.
> 
> This is not to say that ACPI support or support for these systems is
> completely done, there are still areas being worked on such as PCI, but
> at this point it seems that we can be reasonably sure that ACPI will be
> viable for use on ARM64 and that the already merged support works for
> the cases it handles.  For the AMD Seattle based platforms support
> outside of PCI has been fairly complete in mainline a few releases now.
> 
> This is also not to say that we don't have vendors working with ACPI who
> are trying do things that we would not consider optimal but it does not
> appear that the EXPERT dependency is having a substantial impact on
> these vendors.
> 
> Given all this it seems that at this point the EXPERT dependency mainly
> creates inconvenience for users with systems that are doing the right
> thing and gets in the way of including the ACPI code in the testing that
> people are doing on mainline.  Removing it should help our ongoing
> testing cover those platforms with only ACPI support and help ensure
> that when ACPI code is merged any problems it causes for other users are
> more easily discovered.
> 
> Signed-off-by: Mark Brown <broonie@kernel.org>
> ---
>  drivers/acpi/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 82b96ee8624c..bf5dc1ac3446 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -5,7 +5,7 @@
>  menuconfig ACPI
>  	bool "ACPI (Advanced Configuration and Power Interface) Support"
>  	depends on !IA64_HP_SIM
> -	depends on IA64 || X86 || (ARM64 && EXPERT)
> +	depends on IA64 || X86 || ARM64
>  	depends on PCI
>  	select PNP
>  	default y
> 

Yes, please.

Reviewed-by: Al Stone <ahs3@redhat.com>

Thanks.

-- 
ciao,
al
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Al Stone
Software Engineer
Red Hat, Inc.
ahs3@redhat.com
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