There's no need to copy the header file into the 3.4 kernel. You just have the patch the nvidia driver to add a preprocessor directive that removes that line if the kernel version is 3.4 or higher.
There's no need to copy the header file into the 3.4 kernel. You just have the patch the nvidia driver to add a preprocessor directive that removes that line if the kernel version is 3.4 or higher.