diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 944bffb08991366a453b1036eff75d19094b6ffd..3a53f3dfca52c7bd21ec5c6219ac44285aaadfac 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -87,7 +87,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
 	iotable_init(desc, 1);
 }
 
-static struct map_desc at91_io_desc __initdata = {
+static struct map_desc at91_io_desc __initdata __maybe_unused = {
 	.virtual	= AT91_VA_BASE_SYS,
 	.pfn		= __phys_to_pfn(AT91_BASE_SYS),
 	.length		= SZ_16K,