Re: 2.6.23.11 : ehci not working with a710 camera

On Wed, 19 Dec 2007, David Brownell wrote:

> Here's that patch.  Please give it at try with USB_DEBUG enabled.
> Note that the patch has two behavioral changes -- avoid the "what
> maxpacket should I use?" dance that's not needed, and use a longer
> delay at one point -- plus a diagnostic change to make EHCI report
> what control transfers are making trouble.
> 
> We should at least be able to find out just what calls are making
> the trouble (and at what point in the sequence), even if the behavior
> changes don't help.  :)

I agree it's worth trying this.  For the future, however, I would be
cautious about removing that "determine maxpacket" code for low- and
high-speed devices.  Windows uses it always, regardless of the device
speed, and quite likely some devices won't work without it.

Alan Stern


-------------------------------------------------------------------------
SF.Net email is sponsored by:
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services
for just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel