Messages in this thread | | | Date | Wed, 25 Jun 2008 18:12:42 +0400 | From | Anton Vorontsov <> | Subject | Re: [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs |
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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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