--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -218,22 +218,6 @@ static struct cpuidle_state byt_cstates[] = {
 		.enter = &intel_idle,
 		.enter_freeze = intel_idle_freeze, },
 	{
-		.name = "C6N-BYT",
-		.desc = "MWAIT 0x58",
-		.flags = MWAIT2flg(0x58) | CPUIDLE_FLAG_TLB_FLUSHED,
-		.exit_latency = 300,
-		.target_residency = 275,
-		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
-	{
-		.name = "C6S-BYT",
-		.desc = "MWAIT 0x52",
-		.flags = MWAIT2flg(0x52) | CPUIDLE_FLAG_TLB_FLUSHED,
-		.exit_latency = 500,
-		.target_residency = 560,
-		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
-	{
 		.name = "C7-BYT",
 		.desc = "MWAIT 0x60",
 		.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
@@ -242,14 +226,6 @@ static struct cpuidle_state byt_cstates[] = {
 		.enter = &intel_idle,
 		.enter_freeze = intel_idle_freeze, },
 	{
-		.name = "C7S-BYT",
-		.desc = "MWAIT 0x64",
-		.flags = MWAIT2flg(0x64) | CPUIDLE_FLAG_TLB_FLUSHED,
-		.exit_latency = 10000,
-		.target_residency = 20000,
-		.enter = &intel_idle,
-		.enter_freeze = intel_idle_freeze, },
-	{
 		.enter = NULL }
 };