[alsa-devel] 2.6.26-rc1 regression: ISA DMA broken (bisected)

Alan Cox alan at lxorguk.ukuu.org.uk
Tue May 13 19:01:07 CEST 2008

On Tue, 13 May 2008 10:59:32 -0600
Bjorn Helgaas <bjorn.helgaas at hp.com> wrote:

> On Friday 09 May 2008 12:06:55 am Takashi Iwai wrote:
> > Thanks for catching it.  Yeah, the patch looks buggy.  We had an
> > implicit assumption that dev = NULL for ISA devices that require 24bit
> > DMA.
> Naive question #1:  Why don't we have a struct device for these
> ISA devices?  PNP builds a struct device with DMA_24BIT_MASK
> for ISAPNP devices.

Because nobody has done the needed work to get all the old ISA drivers
converted. I guess isa_device would actually be a platform_device
wrapper ?

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