Commit 501586ea authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Boris Ostrovsky
Browse files

xen/balloon: fix unused-variable warning 



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: 121f2fac ("xen/balloon: rename alloc/free_xenballooned_pages")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211108111408.3940366-1-arnd@kernel.org


Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
parent 121f2fac

drivers/xen/balloon.c

+3 −2
Original line number Diff line number Diff line
@@ -80,9 +80,8 @@ 
static uint __read_mostly balloon_boot_timeout = 180;

module_param(balloon_boot_timeout, uint, 0444);



static int xen_hotplug_unpopulated;



#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG

static int xen_hotplug_unpopulated;



static struct ctl_table balloon_table[] = {

	{
@@ -115,6 +114,8 @@ static struct ctl_table xen_root[] = { 
	{ }

};



#else

#define xen_hotplug_unpopulated 0

#endif



/*