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    SubjectRe: [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs
    On Wed, Jun 25, 2008 at 01:32:57PM +0100, Alan Cox wrote:
    > > The bug, as I see it, in the alim15x3 (ULi M5228) hardware: for some
    > > reason it does not hold IRQ line, but rises it for some short period
    > > of time (while the drive itself rises and holds it correctly -- I'm
    > > seeing it via oscilloscope).
    >
    > Are you sure the kernel isn't touching the status register and so
    > clearing the IRQ condition at the controller ?

    There are lots of places that reads status register, and looking into
    the code flow I don't see any problem with the code.

    But to be sure I inserted a printk into INB, and I don't see any status
    reads when/after the drive asserts its IRQ.

    --
    Anton Vorontsov
    email: cbouatmailru@gmail.com
    irc://irc.freenode.net/bd2


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