1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-x86/acpi.h b/include/asm-x86/acpi.h
index 635d764dc13e..35d1743b57ac 100644
--- a/include/asm-x86/acpi.h
+++ b/include/asm-x86/acpi.h
@@ -140,6 +140,8 @@ static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
             boot_cpu_data.x86_model <= 0x05 &&
             boot_cpu_data.x86_mask < 0x0A)
                 return 1;
+        else if (boot_cpu_has(X86_FEATURE_AMDC1E))
+                return 1;
         else
                 return max_cstate;
 }