On Mon, Sep 20, 2021 at 04:25:24PM +0800, Qu Wenruo wrote:

quoted

Kees Cook does a tree wide unification to { } because there are some
oddities with partial initialization and { 0 } so this will get fixed
eventually.

Does this mean in the future only "= { }" is preferred?

Yes,
https://lore.kernel.org/all/20210910225207.3272766-1-keescook@chromium.org/ (local)

It would looks a little weird to me as C89/C90 doesn't allow this.

And I guess checkpatch would also be updated to handle that?

I think so but we can always override what checkpatch suggests.