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I’m trying to use MPU3000/3050 by Invensense with embedded linux (ARM-based LPC3141 board, Embedded Artists).
I found this interesting patch on the Internet
https://patchwork.kernel.org/patch/703991/
how can I implement it in my kernel?
Read this article for detailed instructions on how to apply a patch.
Warning: kernel patches are quite often highly specific to the version of Linux they were developed for, so if your kernel version is different from the one the patch was originally made for you may encounter some problems.
Edit: I had a look at this particular patch and essentially it creates a new file (mpu3050.c) and modifies drivers/input/misc/Makefile and drivers/input/misc/Kconfig. Even if everything else fails the new file should be created, and the mods to the existing files can probably be done manually.