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

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Date:   Sat, 27 Feb 2021 20:19:36 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Christian Zigotzky <chzigotzky@...osoft.de>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: Fix <linux/version.h> for empty SUBLEVEL or
 PATCHLEVEL again

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@...osoft.de>
>Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

Reviewed-and-tested-by: Sasha Levin <sashal@...nel.org>

Thank you!

-- 
Thanks,
Sasha