From 8325baf7b463cf11cb11a02c926d8cbe6b2fbde0 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 8 Apr 2013 16:08:46 +0200
Subject: percpu-rwsem: compile fix

The shortcut on mainline skip lockdep. No idea why this is a good thing.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

diff --git a/lib/percpu-rwsem.c b/lib/percpu-rwsem.c
index 652a8ee..2db0f42 100644
--- a/lib/percpu-rwsem.c
+++ b/lib/percpu-rwsem.c
@@ -84,8 +84,12 @@ void percpu_down_read(struct percpu_rw_semaphore *brw)
 
 	down_read(&brw->rw_sem);
 	atomic_inc(&brw->slow_read_ctr);
+#ifdef CONFIG_PREEMPT_RT_FULL
+	up_read(&brw->rw_sem);
+#else
 	/* avoid up_read()->rwsem_release() */
 	__up_read(&brw->rw_sem);
+#endif
 }
 
 void percpu_up_read(struct percpu_rw_semaphore *brw)
-- 
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