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Re: how to debug a USB problem?
On Fri, Dec 09, 2011 at 09:38:28AM +1030, Brett Lymn wrote:
> On Wed, Dec 07, 2011 at 01:04:02PM +0400, Aleksej Saushev wrote:
> > Build kernel with USB_DEBUG and check kernel messages?
> and OHCI_DEBUG and EHCI_DEBUG, then set the variables usbdebug,
> ohcidebug and ehcidebug to 1 using DDB (just in case someone else needs
> to know wtf to do).
> It looks like EHCI just hangs:
Actually, I have found that if I turn the mp3 player on before
connecting the USB then both EHCI and OCHI usb work fine. This may be a
rockbox problem, I am sure I used to be able to connect without powering
on the device but I may have been using the original firmware back then.
Unfortunately, that firmware has bugs that won't get fixed so I switched
to using rockbox.
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