1 files changed, 4 insertions, 2 deletions

diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c
index 02f36f53558c..274d06082f48 100644
--- a/arch/x86/power/cpu_32.c
+++ b/arch/x86/power/cpu_32.c
@@ -46,7 +46,7 @@ static void __save_processor_state(struct saved_context *ctxt)
         ctxt->cr0 = read_cr0();
         ctxt->cr2 = read_cr2();
         ctxt->cr3 = read_cr3();
-        ctxt->cr4 = read_cr4();
+        ctxt->cr4 = read_cr4_safe();
 }
 
 /* Needed by apm.c */
@@ -99,7 +99,9 @@ static void __restore_processor_state(struct saved_context *ctxt)
         /*
          * control registers
          */
-        write_cr4(ctxt->cr4);
+        /* cr4 was introduced in the Pentium CPU */
+        if (ctxt->cr4)
+                write_cr4(ctxt->cr4);
         write_cr3(ctxt->cr3);
         write_cr2(ctxt->cr2);
         write_cr0(ctxt->cr0);