Re: PR/33433 CVS commit: [netbsd-4] src/sys/dev/pci

[Michael van Elst <mlelstv%serpens.de@localhost>]

On Sun, May 18, 2008 at 01:20:02AM +0000, Andrew Doran wrote:
> The following reply was made to PR kern/33433; it has been noted by GNATS.
> 
> From: Andrew Doran <ad%netbsd.org@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: 
> Subject: Re: PR/33433 CVS commit: [netbsd-4] src/sys/dev/pci
> Date: Sun, 18 May 2008 02:16:38 +0100
> 
>  If reading the status register is slow, then why not poll once per second
>  instead of reading it on every interrupt?

You can disable the link change interrupt and use polling instead.
But that requires rewriting that part of the driver and some testing
with the different bge hardware out there.

I don't know wether reading the status register is really slow
or wether this is a theoretical fringe case. On my hardware I
haven't noticed a difference and since the fix was commited
to -current in February I guess few other people have.

Greetings,
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."