Location of Linux Kernel Patch

The Page

WS2 Linux Kernel Introduction For Altera SoC Devices - Lab 3 - SoC FPGA Linux Kernel

https://rocketboards.org/foswiki/view/Documentation/WS2LinuxKernelIntroductionForAlteraSoCDevicesLab4SoCFPGALinuxKernel

describes how to build a Linux kernel. That’s fine. There is a patch mentioned, but not a source to download it. Can you point me to the patch’s location?

What is the patch’s reason?

Thanks

patches.tgz is in card image