1 files changed, 3 insertions, 1 deletions

diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index ca114fe46ffb..b94e9e3b694a 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -169,6 +169,8 @@ void init_cpu_timer(void)
 
 static void clock_comparator_interrupt(__u16 code)
 {
+        if (S390_lowcore.clock_comparator == -1ULL)
+                set_clock_comparator(S390_lowcore.clock_comparator);
 }
 
 static void etr_timing_alert(struct etr_irq_parm *);
@@ -1354,7 +1356,7 @@ static void __init stp_reset(void)
 
         stp_page = alloc_bootmem_pages(PAGE_SIZE);
         rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000);
-        if (rc == 1)
+        if (rc == 0)
                 set_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags);
         else if (stp_online) {
                 printk(KERN_WARNING "Running on non STP capable machine.\n");