linux-kernel - Re: [PATCH v2] powerpc: select HAVE_PATA_PLATFORM in PPC instead of creating a PPC dependency

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Message-Id: <c4f3d527-7e70-4077-b40b-129144d79374@www.fastmail.com>
Date:   Sun, 11 Sep 2022 14:41:08 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Damien Le Moal" <damien.lemoal@...nsource.wdc.com>,
        "Christophe Leroy" <christophe.leroy@...roup.eu>,
        "Lukas Bulwahn" <lukas.bulwahn@...il.com>,
        "Michael Ellerman" <mpe@...erman.id.au>,
        "Nicholas Piggin" <npiggin@...il.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>
Cc:     "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] powerpc: select HAVE_PATA_PLATFORM in PPC instead of creating a
 PPC dependency

On Sun, Sep 11, 2022, at 1:54 PM, Damien Le Moal wrote:
> On 2022/09/09 20:31, Arnd Bergmann wrote:
>>  
>>  config PATA_PLATFORM
>> -	tristate "Generic platform device PATA support"
>> -	depends on EXPERT || PPC || HAVE_PATA_PLATFORM
>> +	tristate "Generic platform device PATA support" if EXPERT || HAVE_PATA_PLATFORM
>
> Shouldn't this be:
>
> 	tristate "Generic platform device PATA support" if EXPERT || PPC
>
> ?
>
> And while at it, it would be nice to add "|| COMPILE_TEST" too.

The idea was that this can be selected by CONFIG_PATA_OF_PLATFORM
in any configuration that has CONFIG_OF enabled. Since PPC
has CONFIG_OF enabled unconditionally, there is no need to
make this option visible separately.

Same for compile-testing: since CONFIG_OF can be enabled on
any architecture, PATA_OF_PLATFORM is already covered by
allmodconfig builds anywhere. The separate HAVE_PATA_PLATFORM
is only needed for machines that want the non-OF pata-platform
module (sh, m68k-mac, mips-sibyte arm-s3c-simtec).

       Arnd