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

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

The following reply was made to PR kern/33433; it has been noted by GNATS.

From: Michael van Elst <mlelstv%serpens.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-bugs%NetBSD.org@localhost
Subject: Re: PR/33433 CVS commit: [netbsd-4] src/sys/dev/pci
Date: Sun, 18 May 2008 07:37:24 +0200

 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."