Re: [PATCH] kbuild: Fix <linux/version.h> for empty SUBLEVEL or PATCHLEVEL again

[Sasha Levin]

On Sat, Feb 27, 2021 at 11:20:23PM +0900, Masahiro Yamada wrote:
> Commit 9b82f13e7ef3 ("kbuild: clamp SUBLEVEL to 255") breaks the build
> if SUBLEVEL or PATCHLEVEL is empty.
>
> Commit 78d3bb4483ba ("kbuild: Fix <linux/version.h> for empty SUBLEVEL
> or PATCHLEVEL") fixed the issue by prepending a zero.
>
> This time, we cannot take the same approach because we have C code:
>
>  #define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL)
>  #define LINUX_VERSION_SUBLEVEL $(SUBLEVEL)
>
> Replace empty SUBLEVEL or PATCHLEVEL with a zero.
>
> Fixes: 9b82f13e7ef3 ("kbuild: clamp SUBLEVEL to 255")
> Reported-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx>
> Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>

Reviewed-and-tested-by: Sasha Levin <sashal@xxxxxxxxxx>

Thank you!

--
Thanks,
Sasha