1 files changed, 4 insertions, 7 deletions

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 19e5adb49a27..cfbe99f88830 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -209,7 +209,7 @@ static inline unsigned long long cycles_2_ns(unsigned long long cyc)
          * dance when its actually needed.
          */
 
-        preempt_disable();
+        preempt_disable_notrace();
         data = this_cpu_read(cyc2ns.head);
         tail = this_cpu_read(cyc2ns.tail);
 
@@ -229,7 +229,7 @@ static inline unsigned long long cycles_2_ns(unsigned long long cyc)
                 if (!--data->__count)
                         this_cpu_write(cyc2ns.tail, data);
         }
-        preempt_enable();
+        preempt_enable_notrace();
 
         return ns;
 }
@@ -653,13 +653,10 @@ unsigned long native_calibrate_tsc(void)
 
         /* Calibrate TSC using MSR for Intel Atom SoCs */
         local_irq_save(flags);
-        i = try_msr_calibrate_tsc(&fast_calibrate);
+        fast_calibrate = try_msr_calibrate_tsc();
         local_irq_restore(flags);
-        if (i >= 0) {
-                if (i == 0)
-                        pr_warn("Fast TSC calibration using MSR failed\n");
+        if (fast_calibrate)
                 return fast_calibrate;
-        }
 
         local_irq_save(flags);
         fast_calibrate = quick_pit_calibrate();