The checkpatch.pl is a perl script to verify that your code conforms to the Linux kernel coding style. This project uses checkpatch.pl to automatically review and leave comments on pull requests.

Following files are used to this project.

• https://raw.githubusercontent.com/torvalds/linux/master/scripts/checkpatch.pl
• https://raw.githubusercontent.com/torvalds/linux/master/scripts/spelling.txt

From zephyr project:

• https://github.com/zephyrproject-rtos/zephyr/commit/92a12a19ae5ac5fdf441c690c48eed0052df326d

• https://github.com/nugulinux/docker-devenv/blob/master/patches/0002-ignore_const_struct_warning.patch

.github/workflows/main.yml

name: checkpatch review
on: [pull_request]
jobs:
  my_review:
    name: checkpatch review
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - name: Run checkpatch review
      uses: webispy/checkpatch-action@master
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

The checkpatch action will posting comments for error/warning result to the PR conversation.

The Github action has a limitation that doesn't have write permission for PR from forked repository. So the action cannot write a comment to the PR.

.github/workflows/main.yml

name: checkpatch review
on: [pull_request]
jobs:
  my_review:
    name: checkpatch review
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - name: Run checkpatch review
      uses: webispy/checkpatch-action@master

You can find the error/waring result from Github action console log.

Since the checkpatch.pl file is a script in the Linux kernel source tree, you must follow the GPL-2.0 license, which is your kernel license.