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    SubjectRe: 2.6.26-rc1 regression: ISA DMA broken (bisected)
    On Tue, 13 May 2008 10:59:32 -0600
    Bjorn Helgaas <bjorn.helgaas@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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