Re: DMA in PCI chipset -- module vs. compiled-in

[Lee Revell]

On Sun, 2006-02-05 at 22:43 -0500, William Park wrote:
> But, for experiment, I tried compiling in only the "generic" options,
> and moved all specific PCI chipsets as modules.  Hotplug loads the
> modules, but with all 'hdparm' options turned off.  When I tried turning
> on DMA, 

Generic and chipset specific support are not complementary, they are
mutually exclusive.  Having generic PCI IDE support enabled will prevent
the chipset specific support from working properly.

This is actually a problem in several areas of the kernel (it's the same
for "Generic RTC" vs. the normal RTC) - I don't think the name "Generic"
properly reflects that it will prevent more specific device support from
working.

Lee

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