linux-kernel - Re: [spi-devel-general] SPI related Kconfig warning

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Message-Id: <200801302321.51120.david-b@pacbell.net>
Date:	Wed, 30 Jan 2008 23:21:50 -0800
From:	David Brownell <david-b@...bell.net>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	spi-devel-general@...ts.sourceforge.net,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	eric miao <eric.y.miao@...il.com>
Subject: Re: [spi-devel-general] SPI related Kconfig warning

On Wednesday 30 January 2008, Kumar Gala wrote:
> Was wondering if anyone was looking at the cause of this warning in  
> top of linus's tree (8af03e782cae1e0a0f530ddd22301cdd12cf9dc0)
> 
> drivers/spi/Kconfig:156:warning: 'select' used by config symbol  
> 'SPI_PXA2XX' refers to undefined symbol 'PXA_SSP'
> 
> I was doing a build of a ppc kernel.

Happens on x86, AVR32, and non-PXA ARM too.  Came from some PXA cleanup
patches.  Eric, didn't you have a patch for this?

(Of course I *still* don't understand why kconfig bothers to look
at reverse dependencies whose "forward" ones can never be satisfied.
If it stopped looking at those, lots of similar problems would vanish.)

- Dave
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