Re: [linux-usb-devel] RE: What to do with all of the USB UHCI drivers in the kernel ?

[Johannes Erdfelt <johannes@erdfelt.com>]

On Tue, May 21, 2002, Maksim (Max) Krasnyanskiy <maxk@qualcomm.com> wrote:
> I'm gonna speak for Bluetooth USB devices.
> I do have bunch of things like Kodak digi camera, Sony DV camcorder, CF 
> reader, etc. But they don't
> seem to care much about which HCD is used and work equally well with both 
> usb-uhci and uhci drivers.
> 
> I used to be a uhci driver fan :). But starting somewhere from 2.4.16 or so 
> Bluetooth devices work much better
> with usb-uhci driver (not all devices but most of them). Even thought 
> Bluetooth is pretty slow (about 700kbps)
> performance difference is sometimes pretty significant 20-30% (ie usb-uhci 
> driver is faster).
> 
> So basically I vote for usb-uhci. However some things will have to be 
> fixed. We (Bluetooth folks) have couple
> of devices that refuse to work with usb-uhci (I didn't test the latest 
> usb-uhci though).

Please test the latest version of the drivers. Both uhci and usb-uhci
have had various bug fixes. I'm sure the performance problems you've had
with uhci have been fixed for a little while now.

Also, feedback about the -hcd variants would useful too since one of
those will be the only ones left for 2.5.

JE