problem of uclinux1.4(2.6.11)

dear all:

i use QuartusII5.0+IDE5.0+uClinux1.4, and add sl811hs to cyc board.

there was no error while building the kernel.

while started there was only one information about sl811:driversl811-hcd ,06 Dec 2004

i cat /proc/interrupts ,there was no usb IRQ number.

why??? thank u!!!!!