diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c
index 8f82b4c..1ca5deb 100644
--- a/arch/blackfin/mm/sram-alloc.c
+++ b/arch/blackfin/mm/sram-alloc.c
@@ -106,7 +106,9 @@
 
 static void __init l1_data_sram_init(void)
 {
+#if L1_DATA_A_LENGTH != 0 || L1_DATA_B_LENGTH != 0
 	unsigned int cpu;
+#endif
 #if L1_DATA_A_LENGTH != 0
 	for (cpu = 0; cpu < num_possible_cpus(); ++cpu) {
 		per_cpu(free_l1_data_A_sram_head, cpu).next =