Module: xenomai-head
Branch: master
Commit: 5e4521496078e1aac5b8039f2d8d6149a781bdaa
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=5e4521496078e1aac5b8039f2d8d6149a781bdaa
Author: Jan Kiszka <jan.kis...@siemens.com>
Date: Fri Jun 18 19:33:58 2010 +0200
RTDM: Protect xnshadow_ppd_get via nklock
xnshadow_ppd_get must only be called while holding nklock and having
IRQs disabled. Fix this in create_instance.
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
ksrc/skins/rtdm/core.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/ksrc/skins/rtdm/core.c b/ksrc/skins/rtdm/core.c
index 11102e2..649fd2b 100644
--- a/ksrc/skins/rtdm/core.c
+++ b/ksrc/skins/rtdm/core.c
@@ -163,7 +163,9 @@ static int create_instance(struct rtdm_device *device,
atomic_set(&context->close_lock_count, 1);
#ifdef CONFIG_XENO_OPT_PERVASIVE
+ xnlock_get_irqsave(&nklock, s);
ppd = xnshadow_ppd_get(__rtdm_muxid);
+ xnlock_put_irqrestore(&nklock, s);
#endif /* CONFIG_XENO_OPT_PERVASIVE */
context->reserved.owner =
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