[yocto] How to patch a driver in Linux source tree

[Khem Raj]

On 4/13/18 11:41 AM, Greg Wilson-Lindberg wrote:
> I'm working on a raspberry pi3 Yocto build from Qt's boot2qt project, 
> it's running Yocto version 2.2.3, and Linux kernel 4.4.50. I need to 
> back port some changes to a file in drivers/net/can/spi. I confused 
> about where and how I set up the patch file.
> 
> I have a linux-raspberrypi_4.4.bbappend file. Do I put the patch file in 
> that, and If so, how do I indicate the path to the file?

yes.

SRC_URI += "file://yourpatch.patch"

also add

FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"

then create a directory called linux-raspberrypi parallel to where the 
bbappend is and put the yourpatch.patch inside that directory.


> 
> 
> Thanks for the help and enlightenment,
> 
> Greg Wilson-Lindberg
> 
>