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

[Thao To Hieu]

Dear All,

This is a nice work. I have ported UBoot on TEngine/SH7727 and got this issue. The issue had reported into UBoot mailing list and Remy sent me a patch. And 
"ERROR: CTL:TIMEOUT errors" could be fixed with his patch. Thank you a lot.

Let me test his update patch again and report the result later.

Best regards,

-----Original Message-----
From: Markus Klotzbücher [mailto:mk at denx.de] 
Sent: Tuesday, September 16, 2008 9:11 PM
To: Remy Bohmer
Cc: u-boot at lists.denx.de; Wolfgang Denk; Thao To Hieu; Nicolas Ferre; Stelian Pop
Subject: Re: [patch 0/3] Improve stability USB memory sticks for the commonOHCI USB layer.

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

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