1 files changed, 1 insertions, 8 deletions

diff --git a/arch/x86/kernel/tsc_64.c b/arch/x86/kernel/tsc_64.c
index 322b38c68198..c62f3b6eacc0 100644
--- a/arch/x86/kernel/tsc_64.c
+++ b/arch/x86/kernel/tsc_64.c
@@ -273,15 +273,8 @@ __cpuinit int unsynchronized_tsc(void)
                 return 1;
 #endif
 
-        if (boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) {
-#ifdef CONFIG_ACPI
-                /* But TSC doesn't tick in C3 so don't use it there */
-                if (acpi_gbl_FADT.header.length > 0 &&
-                    acpi_gbl_FADT.C3latency < 1000)
-                        return 1;
-#endif
+        if (boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
                 return 0;
-        }
 
         /* Assume multi socket systems are not synchronized */
         return num_present_cpus() > 1;