Manual Patch

Manually Patch Kernel

a. cd ~/ThinkEdge_FW/Hodaka_switch_firmware

b. make target/linux/{clean,prepare} V=sc QUILT=1

c. cd build_dir/target-aarch64_generic_glibc/linux-layerscape_armv8_64b/linux-4.14.336

d. quilt push -a

e. quilt new platform/900-ssrb-01xx-cve-xxxx-xxxx.patch
(Replace with your patch name)
Note: 如果是產生 kernel 的 patch，檔名必須是 platform/xxxx-*.patch，不然不會產生到 kernel 的 patch。

f. quilt edit drivers/i2c/busses/i2c-imx.c
(Replace with the file/code you want to modify)

g. quilt diff

h. quilt refresh

i. cd ../../../../
(Back to the source code path)

j. make target/linux/update V=sc

k. Check patch directory:
ls target/linux/layerscape/patches-4.14/

l. Build and verify:
make target/linux/{clean,compile} -j22

• If error:

  1. make target/linux/{clean,compile} -j1 V=sc
  2. Troubleshoot

• If pass:

  1. git status
  2. git add xxxxx.patch
  3. git commit -m "message for the commit"
  4. git push

m. Go to AP to update triage

Manually Patch Packages

Example: package/system/ubox

1. make package/system/ubox/{clean,prepare} V=s QUILT=1
   ⇒ Unpacks the source tarball and prepares existing patches as quilt patch series (if any).

2. cd build_dir/target-aarch64_generic_glibc/ubox-2021-08-03-205defb5/
   ⇒ Change to the prepared source directory.

3. quilt push -a
   ⇒ Apply all existing patches using quilt push, if any.

4. quilt new 002-logfile_permissions.patch
   ⇒ Create a new empty patch file.

5. quilt edit log/logread.c
   ⇒ Edit the file you want to modify.

6. quilt diff
   ⇒ Review the changes using quilt diff.

7. quilt refresh
   ⇒ Update the patch file (e.g., 010-main_code_fix.patch) with the new changes.

8. cd ../../..
   ⇒ Return to the top-level directory of the buildroot.

9. make package/system/ubox/update V=sc
   ⇒ Move the new patch file over to the buildroot and run update.

10. make package/system/ubox/{clean,compile} -j1 V=sc
    ⇒ Rebuild the package to test your changes.