[PATCH] sys_prctl(): simplify arg2 judgment when calling PR_SET_TIMERSLACK

[Yang Xu]

arg2 will never < 0, for its type is 'unsigned long'. So negative
judgment is meaningless.

Signed-off-by: Yang Xu <xuyang2018...@cn.fujitsu.com>
---
 kernel/sys.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index 2969304c29fe..399457d26bef 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2372,11 +2372,11 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, 
arg2, unsigned long, arg3,
                        error = current->timer_slack_ns;
                break;
        case PR_SET_TIMERSLACK:
-               if (arg2 <= 0)
+               if (arg2)
+                       current->timer_slack_ns = arg2;
+               else
                        current->timer_slack_ns =
                                        current->default_timer_slack_ns;
-               else
-                       current->timer_slack_ns = arg2;
                break;
        case PR_MCE_KILL:
                if (arg4 | arg5)
-- 
2.18.1