1 files changed, 2 insertions, 3 deletions

diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c
index d78444c788a..f04d08a7d02 100644
--- a/arch/x86/kernel/tsc_32.c
+++ b/arch/x86/kernel/tsc_32.c
@@ -131,7 +131,7 @@ unsigned long native_calculate_cpu_khz(void)
 {
         unsigned long long start, end;
         unsigned long count;
-        u64 delta64;
+        u64 delta64 = (u64)ULLONG_MAX;
         int i;
         unsigned long flags;
 
@@ -143,6 +143,7 @@ unsigned long native_calculate_cpu_khz(void)
                 rdtscll(start);
                 mach_countup(&count);
                 rdtscll(end);
+                delta64 = min(delta64, (end - start));
         }
         /*
          * Error: ECTCNEVERSET
@@ -153,8 +154,6 @@ unsigned long native_calculate_cpu_khz(void)
         if (count <= 1)
                 goto err;
 
-        delta64 = end - start;
-
         /* cpu freq too fast: */
         if (delta64 > (1ULL<<32))
                 goto err;