Re: better leve triggered IRQ management needed
From: Alan Cox
Date: Mon Apr 24 2006 - 16:17:23 EST
On Mon, Apr 24, 2006 at 09:53:22PM +0200, Arjan van de Ven wrote:
> we now have that neat polling thing Alan did for interrupts (but which
> is optional). To limp along better the kernel could auto-enable that for
> any such shared interrupt automatically as a "safe fallback"...
> (or heck, if things are this broken, you probably want it for all
> interrupts at that point just to be sure)
That is really something drivers should handle themselves if they are doing
shared edge trigger. For one the kernel core has no idea the right polling
time and for two its often possible to pull dirty tricks to avoid the race.
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