On 22-01-18, 16:39, Sean Wang wrote:

Hi, Rafael and Viresh

Can you kindly guide me how to let the patch also be applied to 4.14 and
4.15 tree? Do I need to submit another patches for them?

These trees really need them. Otherwise, multi_v7_defconfig setup will
cause an occasional hang or unexpected behaviors on related boards as
[1] kernelci reported :-(

You need to send them for stable kernels, just follow the following doc on how
to send patches for stable kernels.

Documentation/process/stable-kernel-rules.rst

-- 
viresh