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Message-ID: <017df2d4fa3f2ed5f08106ba39bec3f0db382a8f.camel@linux.ibm.com>
Subject: Re: [PATCH v3 05/38] counter: add HAS_IOPORT dependencies
From:   Niklas Schnelle <schnelle@linux.ibm.com>
To:     William Breathitt Gray <william.gray@linaro.org>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Uwe =?ISO-8859-1?Q?Kleine-K=F6nig?= 
        <u.kleine-koenig@pengutronix.de>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
        linux-pci@vger.kernel.org, Arnd Bergmann <arnd@kernel.org>,
        linux-iio@vger.kernel.org
Date:   Fri, 28 Apr 2023 15:27:56 +0200
In-Reply-To: <ZBBrl4v9L8Zw+AsN@fedora>
References: <20230314121216.413434-1-schnelle@linux.ibm.com>
         <20230314121216.413434-6-schnelle@linux.ibm.com> <ZBBrl4v9L8Zw+AsN@fedora>
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On Tue, 2023-03-14 at 08:41 -0400, William Breathitt Gray wrote:
> On Tue, Mar 14, 2023 at 01:11:43PM +0100, Niklas Schnelle wrote:
> > In a future patch HAS_IOPORT=3Dn will result in inb()/outb() and friend=
s
> > not being declared. We thus need to add HAS_IOPORT as dependency for
> > those drivers using them.
> >=20
> > Co-developed-by: Arnd Bergmann <arnd@kernel.org>
> > Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
> > ---
> >  drivers/counter/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> >=20
> > diff --git a/drivers/counter/Kconfig b/drivers/counter/Kconfig
> > index b5ba8fb02cf7..1cae5097217e 100644
> > --- a/drivers/counter/Kconfig
> > +++ b/drivers/counter/Kconfig
> > @@ -15,6 +15,7 @@ if COUNTER
> >  config 104_QUAD_8
> >  	tristate "ACCES 104-QUAD-8 driver"
> >  	depends on (PC104 && X86) || COMPILE_TEST
> > +	depends on HAS_IOPORT
> >  	select ISA_BUS_API
> >  	help
> >  	  Say yes here to build support for the ACCES 104-QUAD-8 quadrature
> > --=20
> > 2.37.2
>=20
> Is HAS_IOPORT needed because this driver uses devm_ioport_map()? The
> inb()/outb() functions and such are not used in this driver, so would it
> suffice to depend on HAS_IOPORT_MAP instead?
>=20
> William Breathitt Gray

Yes, good catch HAS_IOPORT_MAP indeed seems to be enough. Will be
changed in v4. Thankfully the Kconfig change to add HAS_IOPORT has
already landed in Linus' tree so for the future these per subsystem
patches can be merged independently.

Thanks,
Niklas