[PATCH 0/2] PowerPC: 4xx uic updates
benh at kernel.crashing.org
Wed Nov 14 14:40:53 EST 2007
On Tue, 2007-11-13 at 20:05 -0600, Josh Boyer wrote:
> On Tue, 13 Nov 2007 23:15:59 +0300
> Valentine Barshak <vbarshak at ru.mvista.com> wrote:
> > These patches update 4xx uic code. The first one
> > fixes a minor issue with edge-triggered interrupts,
> > while the second one makes it use generic level and edge irq
> > handlers. I've added irq ack'ing to the unmask callback for
> > level-triggered interrupts, because to de-assert them we have
> > to do 2 things is the exact order as below:
> > 1. de-assert the external source in the ISR.
> > 2. ack the IRQ on the UIC.
> > So, ack'ing level interrupts before unmasking them makes possible
> > to use generic level irq handler and it doesn't hurt, cause
> > we can never miss a level-triggered interrupt. It always stays
> > asserted untill the external source is removed and ack'ed on UIC.
> > These have been tested on Sequoia PowerPC 440EPx board.
> Is my mail server slow, or did patch 2 of 2 never make it out?
It never reached me neither.
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