Re: [PATCH -rt] ide: fix interrupts processing issue withpreempt-able hardirqs

[Anton Vorontsov]

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@xxxxxxxxx
irc://irc.freenode.net/bd2
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