Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[pandora-kernel.git] / arch / s390 / oprofile / init.c

diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c
index c63d7e5..0e358c2 100644 (file)
--- a/arch/s390/oprofile/init.c
+++ b/arch/s390/oprofile/init.c
@@ -25,7 +25,7 @@ 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
@@ -145,15 +145,17 @@ static int oprofile_hwsampler_init(struct oprofile_operations *ops)
         * create hwsampler files only if hwsampler_setup() succeeds.
         */
        oprofile_min_interval = hwsampler_query_min_interval();
-       if (oprofile_min_interval < 0) {
-               oprofile_min_interval = 0;
+       if (oprofile_min_interval == 0)
                return -ENODEV;
-       }
        oprofile_max_interval = hwsampler_query_max_interval();
-       if (oprofile_max_interval < 0) {
-               oprofile_max_interval = 0;
+       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;