From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] [PATCH] USB: shutdown USB before booting
Date: Thu, 10 Jul 2008 21:50:43 +0200 [thread overview]
Message-ID: <20080710195043.8DBE6242FF@gemini.denx.de> (raw)
In-Reply-To: Your message of "Thu, 10 Jul 2008 15:02:14 +0200." <200807101502.14543.sr@denx.de>
In message <200807101502.14543.sr@denx.de> you wrote:
>
> Yes, I remember hearing of this problem. I thought it was already fixed. Seems
> not to be the case. Please find a comment below.
I thought so, too. But Martin Krause's patch somehow got stuck in the
gearbox.
> By implementing this usb_stop() in do_bootm() you prevent this problem in many
> cases (e.g. Linux booting). But unfortunately not in all cases. For
> example "bootelf" or "bootvx" are not fixed.
You are right.
> Can't this be solved in a different way. By calling usb_stop each time after
> an USB command completes. IIRC, this is how it is done in the U-Boot network
> implementation too.
>
> What do you think?
I pulled in the current patch so we reduce the problem as far as
possible; any better implementation is welcome.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
In the beginning there was nothing.
And the Lord said "Let There Be Light!"
And still there was nothing, but at least now you could see it.
next prev parent reply other threads:[~2008-07-10 19:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-10 12:47 [U-Boot-Users] [PATCH] USB: shutdown USB before booting Markus Klotzbücher
2008-07-10 13:02 ` Stefan Roese
2008-07-10 19:50 ` Wolfgang Denk [this message]
2008-07-10 19:48 ` Wolfgang Denk
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