[U-Boot] [patch 0/3] Improve stability USB memory sticks for the common OHCI USB layer.

["Markus Klotzbücher" <mk@denx.de>]

Dear Remy,

On Tue, Sep 16, 2008 at 02:55:41PM +0200, Remy Bohmer wrote:
> This series is a set of patches that are required to make USB sticks behave 
> robust while using U-Boot on a OHCI host.
> 
> Several users complain about ERROR: CTL:TIMEOUT errors while using USB sticks,
> and while testing many different USB sticks it showed that some were working
> and many don't. It even showed a compiler dependency while debugging this, where
> GCC 3.x compilers seemed to work (but not always) and GCC 4.x compilers usually
> don't. While debugging this (with a USB analyser of course) it turned out that
> U-boot also made several protocol violations that needed to be solved, these
> resulted in hanging USB devices and so on.
> 
> In a mail thread with Stelian Pop on 28 July it was reported of a known error
> on Atmel cores that it did not work.
> 
> I tested these series on Atmel AT91SAM9261 Core, with the common OHCI driver,
> GCC 4.2.3 (Code Sourcery G++ Lite 2008q1-126)
> 
> REMEMBER: U-boot still supports 1 single USB stick at a time...

Nice work! I'll test and push your patches to the USB repo ASAP
(within the next couple of days). I'd welcome any feedback especially
from the people who reported the problems you describe.

Thanks for chasing this down!

Best regards

Markus

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de")