perf/x86: Convert obsolete simple_strtoul() usage to kstrtoul()

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1339384421.3025.8.camel@lorien2
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 000a4746c7ce..766c76d5ec4c 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1640,7 +1640,12 @@ static ssize_t set_attr_rdpmc(struct device *cdev,
                               struct device_attribute *attr,
                               const char *buf, size_t count)
 {
-        unsigned long val = simple_strtoul(buf, NULL, 0);
+        unsigned long val;
+        ssize_t ret;
+
+        ret = kstrtoul(buf, 0, &val);
+        if (ret)
+                return ret;
 
         if (!!val != !!x86_pmu.attr_rdpmc) {
                 x86_pmu.attr_rdpmc = !!val;