Re: [PATCH] staging/comedi: new Kconfig and Makefiles, drivers grouped by bustype.

From: Frank Mori Hess
Date: Sun May 16 2010 - 15:30:17 EST

On Saturday 15 May 2010, Alexander Kurz wrote:
> Hm, I cannot see a build-dependancy from any of the PCMCIA-Modules
> to 8255.c. All PCMCIA-modules do build and load fine without compiling
> 8255.c. There is a dependancy from das08_cs (PCMCIA) to das08 (ISA) via
> config COMEDI_DAS08_CS select COMEDI_DAS08.
> This will lead to a hidden select of COMEDI_DAS08 when
> COMEDI_ISA_DRIVERS is not enabled.
> Is there something that I have missed?

All the drivers that include 8255.h depend on the 8255 module. They still
compile without it because 8255.h provides stubs that automatically drop
support for the 8255 chips from the other drivers if the 8255 module is
not selected. IMO, the stubs are not particularly valuable and with the
fine-grained driver selection will just result in confused users with
reduced functionality drivers.

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