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Date:	Fri, 4 Jul 2008 09:50:17 -0700
From:	David Brownell <>
To:	Takashi Iwai <>
Cc:	Dmitry Baryshkov <>,
	Stephen Rothwell <>,, LKML <>
Subject: Re: [PATCH] fix build error of driver/mfd/tc6393xb.c

On Friday 04 July 2008, Takashi Iwai wrote:
> > The proper fix probably is to make PPC_MPC5200_GPIO also select

I think it's higher in the dependency tree than that.

> > I don't think that building GPIO_LIB w/o GENERIC_GPIO 
> > should be supported.
> [Added David to Cc]
> Then HAVE_GPIO_LIB should depend on GENERIC_GPIO.

They must go together ... right.  Anything using gpiolib
without the interface it implements needs a head-exam. ;)

But since ISTR that Kconfig (still) doesn't get dependencies
right when you "select" something that depends on something
else, that particular solution won't fly.

> Or, linux/gpio.h should be fixed so that the code can be built
> properly without GENERIC_GPIO.

No; GENERIC_GPIO is the interface, HAVE_GPIO_LIB is one
of the valid ways to implement it.

It should work if HAVE_GPIO_LIB selected GENERIC_GPIO...

- Dave

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