Re: 5 patches: updates to SPI and mmc_spi, kernel 2.6.19
From: Hans-Peter Nilsson
Date: Fri Jan 26 2007 - 09:32:29 EST
> From: David Brownell <david-b@xxxxxxxxxxx>
> Date: Thu, 25 Jan 2007 04:59:37 -0800
> So to summarize ... you now have MMC-over-SPI working on CRIS
> hardware, with these patches?
Yes. FWIW, we'll ship with our ETRAX FS developer boards, soon
enough (in a week or so, knock-on-wood).
> Can you yet run filesystem
> stress tests with ext3 on such an MMC card,
I'd have to configure it in, but I guess I could, if you're not
happy with just vfat. I just copied (tarred both to file, and
separately copied the tree through tar) 174 MeB from a USB stick
to separately a 512 MeB SDcard and a 2 GiB MMC card and they
both read out correctly from an (USB) SDcard reader connected to
my PC. Is there a specific test you have in mind?
(I finally hashed out the "DMA" problems I've had. I mistakenly
thought that a wait_for_completion_timeout return of 0 meant
that the completion didn't happen, grr! Buggy or just confusing
API? Kind-of the same problem as with your scanbyte timeout!
Looks like this kind of bug is elsewhere in the kernel too.)
> or is this more at
> the level of everything working with light/early test loads,
> so it's time to see if other folk can reproduce your results?
What's the difference? :-) (Don't forget, it's considered ok to
include experimental drivers on developer boards.)
brgds, H-P
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