Messages in this thread | | | Date | Sat, 05 Jul 2008 12:18:28 +0900 | From | Tejun Heo <> | Subject | Re: [git patches] libata fixes for .26 |
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Tejun Heo wrote: > so, it basically behaves like level triggered IRQ latch for ports, > which also creates an easy-to-miss requirement for MSI implementation > where the controller should generate a new MSI message when the driver > clears some of the IRQ pending bits but not all.
Oops, confused. The easy-to-miss requirement is the controller needing to resend the message if the irq_stat is cleared but port IRQ is still pending. Resending on partial clear is always necessary.
Thanks.
-- tejun
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