How to port 2.6.25 kernel

Hello

I 'have a QQ2440 board and i try to port a linux 2.6.25 kernel.
I try to make a patch with 2.6.13 kernel with the original but when i patch the 2.6.25 kernel i have a lot of error.
I would know if someone have made a patch with just driver.
Thanks.

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