Re: NetBSD vs. Acer Aspire One (feat. dmesg)

[Paul Goyette <paul%whooppee.com@localhost>]

On Mon, 25 Aug 2008, Robert Swindells wrote:

> > > The locking issues have only appeared fairly recently, it would be
> > > good to get something into the tree to avoid this kind of breakage
> > > happening again.
>
> > Well, actually, the version of sdhc(4)/sdmmc(4) that uses a scsipi layer
> > works fairly well, with no locking issues that I'm aware of.  I didn't
> > do the initial port, I just cleaned up the code that was posted here
> > some months ago.  I've lost the Email addr of the person who posted it,
> > but it should be in the Email archives.
>
> It did work well, it now panics when you insert a card.

Hmmm.  Interesting.

Well, if you want to help me debug this ld(4) version, I've just built
a new one with LOCKDEBUG enabled.  It's a relatively -current amd64 
GENERIC kernel with the addition of LOCKDEBUG and the sdhc/sdmmc 
drivers.  You can grab it from

        ftp://ftp.whooppee.com/public/sdmmc/netbsd-test52.gz

I fully expect this kernel to panic as soon as you insert a card, so it 
would be a good idea to boot it single-user to avoid having to fsck 
after the reboot!  What I need is the last few console messages before 
the panic, as well as the panic message itself, to figure out where I'm 
violating the locking protocol.

TIA.


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