diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index 72477c252a94b7a31a62dab1eda522634eb4f5b9..fcb2f6cf430b812078906fe8c41ab0d04c7a4c55 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -941,7 +941,7 @@ int peripheral_request(unsigned short per, const char *label)
 EXPORT_SYMBOL(peripheral_request);
 #endif
 
-int peripheral_request_list(unsigned short per[], const char *label)
+int peripheral_request_list(const unsigned short per[], const char *label)
 {
 	u16 cnt;
 	int ret;
@@ -994,7 +994,7 @@ void peripheral_free(unsigned short per)
 }
 EXPORT_SYMBOL(peripheral_free);
 
-void peripheral_free_list(unsigned short per[])
+void peripheral_free_list(const unsigned short per[])
 {
 	u16 cnt;
 	for (cnt = 0; per[cnt] != 0; cnt++)
diff --git a/include/asm-blackfin/portmux.h b/include/asm-blackfin/portmux.h
index 0d3f650d2d99ad50ecc4dc4269d1117581985507..0807b286cd9e9e5fa9ebfeb92bc81f953fefb3eb 100644
--- a/include/asm-blackfin/portmux.h
+++ b/include/asm-blackfin/portmux.h
@@ -17,8 +17,8 @@
 
 int peripheral_request(unsigned short per, const char *label);
 void peripheral_free(unsigned short per);
-int peripheral_request_list(unsigned short per[], const char *label);
-void peripheral_free_list(unsigned short per[]);
+int peripheral_request_list(const unsigned short per[], const char *label);
+void peripheral_free_list(const unsigned short per[]);
 
 #include <asm/gpio.h>
 #include <asm/mach/portmux.h>