Testing Logitech Quickcam on Embedded System

I am testing “Logitech Quickcam for Notebooks Pro” on an embedded board (ARM9 processor).
Camera ID: 046d:08b1 Logitech, Inc.

This camera is supported by “USB Philips Cameras” (symbol USB_PWC).

After loading the “pwc” module I was getting this error message:

pwc: isoc_init() submit_urb 0 failed with error -38

To solve it I selected “Full speed ISO transactions” (symbol USB_EHCI_SPLIT_ISO)