Module: xenomai-head
Branch: master
Commit: 7c32d5ba3af8923f542f0c6c112864a73041acd8
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=7c32d5ba3af8923f542f0c6c112864a73041acd8
Author: Philippe Gerum <r...@xenomai.org>
Date: Sat Oct 16 13:21:59 2010 +0200
nucleus: fix race in xnpod_set_thread_tslice()
---
ksrc/nucleus/pod.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/ksrc/nucleus/pod.c b/ksrc/nucleus/pod.c
index 2297b74..f5326bd 100644
--- a/ksrc/nucleus/pod.c
+++ b/ksrc/nucleus/pod.c
@@ -3077,11 +3077,13 @@ int xnpod_set_thread_tslice(struct xnthread *thread,
xnticks_t quantum)
int aperiodic;
spl_t s;
- if (thread->base_class->sched_tick == NULL)
- return -EINVAL;
-
xnlock_get_irqsave(&nklock, s);
+ if (thread->base_class->sched_tick == NULL) {
+ xnlock_put_irqrestore(&nklock, s);
+ return -EINVAL;
+ }
+
aperiodic = !xntbase_periodic_p(xnthread_time_base(thread));
thread->rrperiod = quantum;
thread->rrcredit = quantum;
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