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.

.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 capture image above shows the comments on the lines of code and the comments on the commit message.

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

Due to the above limitations, you can check the comments directly in the console log.

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

You can find the Dockerfile from docker branch of this repository.

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.