Re: kernel panic with pccard insert on recent 7.0 CURRENT

From: Garrett Cooper <youshi10_at_u.washington.edu>
Date: Sun, 17 Jun 2007 00:33:08 -0700
Wilkinson, Alex wrote:
>     0n Sat, Jun 16, 2007 at 11:56:59PM -0600, M. Warner Losh wrote: 
>
>     >Yes.  I'm pretty sure that's wrong.  All ISA and PC Card devices use
>     >edge triggered interrupts.  Also, it is inefficient for level
>     >triggered interrupts, since two interrupt sources on the same
>     >interrupt may trigger at about the same time...
>
> What is meant by "edge triggered interrupts" ?
>
>  -aW
>   
    I'd assume 'edge triggered interrupts' mean interrupts which occur 
on some sort of clock edge, most likely dealing with a clock base 
required for setup, or predefined by the designers for some other reason.
-Garrett
Received on Sun Jun 17 2007 - 05:33:10 UTC

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