Re: [PATCH] xen/balloon: fix unused-variable warning

[Boris Ostrovsky]

On 11/8/21 6:14 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> In configurations with CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=n
> and CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y, gcc warns about an
> unused variable:
>
> drivers/xen/balloon.c:83:12: error: 'xen_hotplug_unpopulated' defined but not used [-Werror=unused-variable]
>
> Since this is always zero when CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
> is disabled, turn it into a preprocessor constant in that case.
>
> Fixes: 121f2faca2c0 ("xen/balloon: rename alloc/free_xenballooned_pages")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>



Applied to for-linus-5.16b


-boris