diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index cd252fd684b7..66b8fe97f739 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -144,14 +144,13 @@ static inline int __cpu_has_fpu(void)
 
 static inline unsigned long cpu_get_msa_id(void)
 {
-	unsigned long status, conf5, msa_id;
+	unsigned long status, msa_id;
 
 	status = read_c0_status();
 	__enable_fpu(FPU_64BIT);
-	conf5 = read_c0_config5();
 	enable_msa();
 	msa_id = read_msa_ir();
-	write_c0_config5(conf5);
+	disable_msa();
 	write_c0_status(status);
 	return msa_id;
 }