1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 18f9ad814104..91aff180ac47 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -347,7 +347,8 @@ static int intel_idle_probe(void)
         cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &mwait_substates);
 
         if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
-                !(ecx & CPUID5_ECX_INTERRUPT_BREAK))
+            !(ecx & CPUID5_ECX_INTERRUPT_BREAK) ||
+            !mwait_substates)
                         return -ENODEV;
 
         pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates);