Re: Devices, IRQs and handlers

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Hi Arjan,

On Mon, Jan 09, 2006 at 10:25:12PM +0100, Arjan van de Ven told us:
> you don't know which device generated the irq!
> All the kernel knows is that "irq 11 triggered". Not which of the two
> devices on irq 11 did that.

just to clarify: this means the driver(s) which registered for that
particular irq need to "ask" their device whether it generated this
irq or not in some way, right?? And how this is done is then device
specific, of course...


have a nice day :-)

Sven

-- 
Linux zion.homelinux.com 2.6.15-mm2_23 #23 Sun Jan 8 19:59:38 CET 2006 i686 athlon i386 GNU/Linux
 22:32:46 up 23:30,  1 user,  load average: 0.24, 0.17, 0.11

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