check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0

Impact: fix warnings-limit cutoff check for debug feature

unsigned sysctl_hung_task_warnings cannot be less than 0

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 3953e4a..dc0b3be 100644 (file)
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -188,7 +188,7 @@ static void check_hung_task(struct task_struct *t, unsigned long now)
        if ((long)(now - t->last_switch_timestamp) <
                                        sysctl_hung_task_timeout_secs)
                return;
-       if (sysctl_hung_task_warnings < 0)
+       if (!sysctl_hung_task_warnings)
                return;
        sysctl_hung_task_warnings--;