linux-kernel - Re: [PATCH] i2c: I2C_ELEKTOR should depend on HAS

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Message-ID: <CAMuHMdUk_xTwGbhG0MHkS-8rkF76b1fg193pPcs+9MVyB-qHQw@mail.gmail.com>
Date:	Tue, 16 Aug 2011 21:14:42 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Hans Berglund <hb@...cetec.no>, Jonas Bonn <jonas@...thpole.se>,
	Arnd Bergmann <arnd@...db.de>, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: I2C_ELEKTOR should depend on HAS_IOPORT

Hi Jean,

On Tue, Aug 16, 2011 at 19:50, Jean Delvare <khali@...ux-fr.org> wrote:
> On Mon,  8 Aug 2011 13:20:46 +0200, Geert Uytterhoeven wrote:
>> drivers/i2c/busses/i2c-elektor.c: In function ‘pcf_isa_init’:
>> drivers/i2c/busses/i2c-elektor.c:153: error: implicit declaration of function ‘ioport_map’
>> drivers/i2c/busses/i2c-elektor.c:153: warning: assignment makes pointer from integer without a cast
>> drivers/i2c/busses/i2c-elektor.c: In function ‘elektor_probe’:
>> drivers/i2c/busses/i2c-elektor.c:287: error: implicit declaration of function ‘ioport_unmap’
>>
>> Since commit 82ed223c264def2b15ee4bec2e8c3048092ceb5f ("iomap: make IOPORT/PCI
>> mapping functions conditional"), ioport_map() is only available on platforms
>> that set HAS_IOPORT.
>>
>> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
>> ---
>>  drivers/i2c/busses/Kconfig |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
>> index 646068e..d1fc5cf 100644
>> --- a/drivers/i2c/busses/Kconfig
>> +++ b/drivers/i2c/busses/Kconfig
>> @@ -789,7 +789,7 @@ config I2C_ACORN
>>
>>  config I2C_ELEKTOR
>>       tristate "Elektor ISA card"
>> -     depends on ISA && BROKEN_ON_SMP
>> +     depends on ISA && HAS_IOPORT && BROKEN_ON_SMP
>>       select I2C_ALGOPCF
>>       help
>>         This supports the PCF8584 ISA bus I2C adapter.  Say Y if you own
>
> How can ISA be set if HAS_IOPORT is not? This shouldn't be allowed.

It's always been like that. With CONFIG_ISA, we have inb() and friends. But not
ioport_map(), which was introduced more recently.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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