[yocto] [meta-raspberrypi] Linux Kernel In Temporary Source Code Directory Is Not a git repository"

Bruce Ashfield bruce.ashfield at gmail.com
Thu Nov 10 07:19:20 PST 2016

On Thu, Nov 10, 2016 at 8:10 AM, Thomas A. F. Thorne MEng AUS MIET <
Thomas.Thorne at net2edge.com> wrote:

> I am having some trouble attempting to create Kernel patches as per the
> Yocto Project Development Manual, section 5.10.3. Creating the Patch:
> http://www.yoctoproject.org/docs/2.1.1/dev-manual/dev-
> manual.html#creating-the-patch
> When I get to the stage that says:
> Stage and commit your changes: These Git commands display the modified
> file, stage it, and then commit the file:
> $ git status
> I get the response:
> $ git status
> fatal: Not a git repository (or any of the parent directories): .git
> I have a rpi-layer (taken from ) which I have generated binaries for the
> RasperyPi 3 from.  I wanted to modify a couple of kernel modules to add
> support for a Quectel EC25 module.  I located the relevant module code and
> modified it in my temporary source code area: ~/work/rpi-layer/build/tmp/
> work/cortexa7hf-neon-vfpv4-poky-linux-gnueabi/linux-libc-
> headers/4.4-r0/linux-4.4/drivers/usb/serial

You shouldn't be modifying code in that directory, it is for the kernel ->
libc headers

The actual kernel source is in work-shared/<your machine>/kernel-source/

If you are trying to modify a header that other applications / recipes
need, then that also
shouldn't be done in the libc-headers, it should be done in the source tree
and point those
applications at work-shared for their include/build needs.


> I guess there is something goofy about the way the raspberrypi layer works
> and this is actually a special kernel build which is not held in a git
> repository?  If that is the case, why can I a .gitignore file in the
> ..linux-libc-headers/4.4-r0/linux-4.4 directory?
> I could create a git patch by hand for the next stage but it would be much
> easier to modify a clone of the correct repository.
> Can anyone spot my obvious mistake?
> Regards,
> --
> Thomas A. F. Thorne MEng. AUS MIET
> *Software Engineer*
> Tel: +44 3450 130 030 <+443450130030>
> Email: Thomas.Thorne at Net2Edge.com
> Web: http://www.Net2Edge.com/
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"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"
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