Re: High speed devices with kernel 2.6.21.5.

On Thu, 28 Jun 2007, Branden Sletteland wrote:

> I am seeing an issue when going from kernel version 2.6.20.14 to
> 2.6.21 through 2.6.21.5 were my high speed devices are only being
> recognized as full speed devices, with error output on a 2.6.21 kernel
> stating:
> 
> usb 3-1: new full speed USB device using ohci_hcd and address 11
> usb 3-1: not running at top speed; connect to a high speed hub
> usb 3-1: configuration #1 chosen from 1 choice
> 
> I'm using a Philips (NXP) ISP1563 PCI based host controller
> (OHCI/EHCI) and my high speed mass storage devices are Cypress EZ-USB
> FX2LP CY7C68013A devices with compact flash interfaces.
> 
> This hardware setup is rock solid when running with a 2.6.20.14
> kernel, I have never seen the devices initialize as full speed USB
> devices with this and earlier versions of 2.6.20.

Please try building a kernel with CONFIG_USB_DEBUG enabled, and post 
the resulting dmesg log showing what happens during bootup and when one 
of your devices is plugged in.

Alan Stern


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