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Re: [PATCH] xen/balloon: fix unused-variable warning
- To: Arnd Bergmann <arnd@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Mon, 8 Nov 2021 17:24:51 +0100
- Cc: Arnd Bergmann <arnd@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oscar Salvador <osalvador@xxxxxxx>, Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Mon, 08 Nov 2021 16:24:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.11.21 12:14, 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>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Juergen
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