linux-kernel - Re: [-next] comedi I/O accessor name clashes

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Date:	Fri, 20 Jun 2014 12:12:32 +0100
From:	Ian Abbott <abbotti@....co.uk>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	Greg KH <gregkh@...uxfoundation.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	driverdevel <devel@...verdev.osuosl.org>,
	Linux-Next <linux-next@...r.kernel.org>
Subject: Re: [-next] comedi I/O accessor name clashes

On 2014-06-20 12:07, Geert Uytterhoeven wrote:
> commit 9c340ac934dbbfd46e776465b08391baac32d486
> Author: H Hartley Sweeten <hsweeten@...ionengravers.com>
> Date:   Thu May 29 10:56:32 2014 -0700
>
>      staging: comedi: ni_stc.h: add read/write callbacks to struct ni_private
>
> --- a/drivers/staging/comedi/drivers/ni_stc.h
> +++ b/drivers/staging/comedi/drivers/ni_stc.h
> @@ -1421,6 +1421,13 @@ struct ni_board_struct {
>   #define NUM_GPCT       2
>
>   struct ni_private {
> +       uint8_t (*readb)(struct comedi_device *, int reg);
> +       uint16_t (*readw)(struct comedi_device *, int reg);
> +       uint32_t (*readl)(struct comedi_device *, int reg);
> +       void (*writeb)(struct comedi_device *, uint8_t value, int reg);
> +       void (*writew)(struct comedi_device *, uint16_t value, int reg);
> +       void (*writel)(struct comedi_device *, uint32_t value, int reg);
> +
>          uint16_t (*stc_readw)(struct comedi_device *, int reg);
>          uint32_t (*stc_readl)(struct comedi_device *, int reg);
>          void (*stc_writew)(struct comedi_device *, uint16_t value, int reg);
>
> However, on several architectures, writel() and friends are macros, causing:
>
> drivers/staging/comedi/drivers/ni_atmio.c:318:38: error: macro
> "writew" passed 3 arguments, but takes just 2
>
> m68k http://kisskb.ellerman.id.au/kisskb/buildresult/11346953/
> s390 kisskb.ellerman.id.au/kisskb/buildresult/11347163/
> sparc64 kisskb.ellerman.id.au/kisskb/buildresult/11347152/
> xtensa http://kisskb.ellerman.id.au/kisskb/buildresult/11346651/
>
> Gr{oetje,eeting}s,
>
>                          Geert

Thanks, but Hartley has already fixed it and Greg has applied it to his 
staging-next branch.  It should wend it's merry way to linux-next in the 
not-too-distant future.

Cheers,
Ian.

-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@....co.uk>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-
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