diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index c48b44b3b43ab1e08c0c5c250f3a7f2fcbc5caf6..90cab2d4ac0dd7068cacb1dfdac0664a313cfcd9 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -912,8 +912,8 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data,
 {
 	int i;
 	u32 hi = 0, lo = 0;
-	rdmsr(MSR_PSTATE_CUR_LIMIT, hi, lo);
-	data->max_hw_pstate = (hi & HW_PSTATE_MAX_MASK) >> HW_PSTATE_MAX_SHIFT;
+	rdmsr(MSR_PSTATE_CUR_LIMIT, lo, hi);
+	data->max_hw_pstate = (lo & HW_PSTATE_MAX_MASK) >> HW_PSTATE_MAX_SHIFT;
 
 	for (i = 0; i < data->acpi_data.state_count; i++) {
 		u32 index;