1 files changed, 7 insertions, 1 deletions

diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c
index 0c2d94b94f0..6efc18b5e60 100644
--- a/arch/s390/oprofile/init.c
+++ b/arch/s390/oprofile/init.c
@@ -23,7 +23,7 @@ extern void s390_backtrace(struct pt_regs * const regs, unsigned int depth);
 
 #include "hwsampler.h"
 
-#define DEFAULT_INTERVAL        4096
+#define DEFAULT_INTERVAL        4127518
 
 #define DEFAULT_SDBT_BLOCKS     1
 #define DEFAULT_SDB_BLOCKS      511
@@ -149,6 +149,12 @@ static int oprofile_hwsampler_init(struct oprofile_operations *ops)
         if (oprofile_max_interval == 0)
                 return -ENODEV;
 
+        /* The initial value should be sane */
+        if (oprofile_hw_interval < oprofile_min_interval)
+                oprofile_hw_interval = oprofile_min_interval;
+        if (oprofile_hw_interval > oprofile_max_interval)
+                oprofile_hw_interval = oprofile_max_interval;
+
         if (oprofile_timer_init(ops))
                 return -ENODEV;