[openwrt/openwrt] CI: kernel: check if patch are refreshed for each target

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/5872b1bfd09b7a43b8fa1ca0e977d20818192cbe

commit 5872b1bfd09b7a43b8fa1ca0e977d20818192cbe
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Sat Oct 15 10:56:46 2022 +0200

    CI: kernel: check if patch are refreshed for each target
    
    Enforce refreshed patch for each target with kernel pr tests.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
    (cherry picked from commit 689cfaeb7c37d7199f6e552bf32b0f996ea3040a)
---
 .github/workflows/kernel.yml | 71 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/.github/workflows/kernel.yml b/.github/workflows/kernel.yml
index d8f98c531d..b9605b0deb 100644
--- a/.github/workflows/kernel.yml
+++ b/.github/workflows/kernel.yml
@@ -213,3 +213,74 @@ jobs:
         with:
           name: ${{ env.TARGET }}-${{ env.SUBTARGET }}-logs
           path: "openwrt/logs"
+
+  check-patch:
+    name: Check Kernel patches
+    needs: determine_targets
+    runs-on: ubuntu-latest
+    strategy:
+       fail-fast: False
+       matrix:
+         target: ${{fromJson(needs.determine_targets.outputs.target)}}
+
+    container: ghcr.io/${{ needs.determine_targets.outputs.owner_lc }}/tools:latest
+
+    permissions:
+      contents: read
+      packages: read
+
+    steps:
+      - name: Checkout master directory
+        uses: actions/checkout at v3
+        with:
+          path: openwrt
+
+      - name: Fix permission
+        run: |
+          chown -R buildbot:buildbot openwrt
+
+      - name: Initialization environment
+        run: |
+          TARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 1)
+          SUBTARGET=$(echo ${{ matrix.target }} | cut -d "/" -f 2)
+          echo "TARGET=$TARGET" >> "$GITHUB_ENV"
+          echo "SUBTARGET=$SUBTARGET" >> "$GITHUB_ENV"
+
+      - name: Extract prebuilt tools
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: ./scripts/ext-tools.sh --tools /tools.tar
+
+      - name: Setup Config
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: |
+          echo CONFIG_ALL_KMODS=y >> .config
+          echo CONFIG_DEVEL=y >> .config
+          echo CONFIG_AUTOREMOVE=y >> .config
+          echo CONFIG_CCACHE=y >> .config
+
+          echo "CONFIG_TARGET_${{ env.TARGET }}=y" >> .config
+          echo "CONFIG_TARGET_${{ env.TARGET }}_${{ env.SUBTARGET }}=y" >> .config
+
+          make defconfig
+
+      - name: Build tools
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: make tools/quilt/compile -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh
+
+      - name: Refresh Kernel patches
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: |
+          make target/linux/refresh V=s
+
+          . .github/workflows/scripts/ci_helpers.sh
+
+          if git diff --name-only --exit-code; then
+            success "Kernel patches for ${{ env.TARGET }}/${{ env.SUBTARGET }} seems ok"
+          else
+            err "Kernel patches for ${{ env.TARGET }}/${{ env.SUBTARGET }} require refresh. (run 'make target/linux/refresh' and force push this pr)"
+            exit 1
+          fi