linux-kernel - Re: [PATCH] counter: 104-quad-8: Add COMPILE

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Date:   Mon, 10 Jan 2022 09:36:25 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     William Breathitt Gray <vilhelm.gray@...il.com>
Cc:     Jonathan.Cameron@...wei.com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Syed Nayyar Waris <syednwaris@...il.com>
Subject: Re: [PATCH] counter: 104-quad-8: Add COMPILE_TEST depends

On Mon, Jan 10, 2022 at 02:36:54PM +0900, William Breathitt Gray wrote:
> On Sun, Jan 09, 2022 at 10:22:51PM +0100, Uwe Kleine-König wrote:
> > On Wed, Jan 05, 2022 at 06:41:37PM +0900, William Breathitt Gray wrote:
> > > 104_QUAD_8 depends on X86, but compiles fine on ARCH=arm. This patch
> > > adds support for COMPILE_TEST which is useful for compile testing code
> > > changes to the driver and Counter subsystem.
> > > 
> > > Suggested-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> > > Cc: Syed Nayyar Waris <syednwaris@...il.com>
> > > Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
> > > ---
> > >  drivers/counter/Kconfig | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/counter/Kconfig b/drivers/counter/Kconfig
> > > index 3dcdb681c4e4..5edd155f1911 100644
> > > --- a/drivers/counter/Kconfig
> > > +++ b/drivers/counter/Kconfig
> > > @@ -14,7 +14,7 @@ if COUNTER
> > >  
> > >  config 104_QUAD_8
> > >  	tristate "ACCES 104-QUAD-8 driver"
> > > -	depends on PC104 && X86
> > > +	depends on (PC104 && X86) || COMPILE_TEST
> > 
> > The driver uses inb and friends. Without looking I wonder if there is
> > something like HAVE_IO or similar this needs to depend on for that?
> > 
> > Best regards
> > Uwe
> > 
> > -- 
> > Pengutronix e.K.                           | Uwe Kleine-König            |
> > Industrial Linux Solutions                 | https://www.pengutronix.de/ |
> 
> If I'm not mistaken, on unsupported architectures include/linux/io.h
> will pull in include/asm-generic/io.h which has default implementations
> for inb and friends if they are not otherwise defined. It doesn't look
> like these default implementations are guarded by a Kconfig setting so
> we should be fine in this case.

Looks right, thanks for checking

Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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