diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c
index 69729e38b78a2d83e7f7e799bd2ea37730305d18..649dfd761f23a8c49a06e3fc683d4048e0824792 100644
--- a/arch/x86/kernel/microcode.c
+++ b/arch/x86/kernel/microcode.c
@@ -488,7 +488,7 @@ MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
 #define microcode_dev_exit() do { } while(0)
 #endif
 
-static long get_next_ucode_from_buffer(void **mc, void *buf,
+static long get_next_ucode_from_buffer(void **mc, const u8 *buf,
 	unsigned long size, long offset)
 {
 	microcode_header_t *mc_header;
@@ -522,7 +522,7 @@ static int cpu_request_microcode(int cpu)
 	char name[30];
 	struct cpuinfo_x86 *c = &cpu_data(cpu);
 	const struct firmware *firmware;
-	void *buf;
+	const u8 *buf;
 	unsigned long size;
 	long offset = 0;
 	int error;