timer.c-fix-build-fail-for-RT_FULL.patch

From 1f9b191467b70ed79480294395ad99145fea1b5a Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Tue, 9 Oct 2012 20:20:10 -0400
Subject: [PATCH] timer.c: fix build fail for ! RT_FULL
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The patch "timer-handle-idle-trylock-in-get-next-timer-irq.patch"
introduces a use of rt_spin_unlock outside of the RT_FULL, but
since we have:

 #ifdef CONFIG_PREEMPT_RT_FULL
 # include <linux/spinlock_rt.h>
 #else /* PREEMPT_RT_FULL */

we will not get the definition for !RT_FULL and instead see:

kernel/timer.c: In function ‘get_next_timer_interrupt’:
kernel/timer.c:1407: error: implicit declaration of function ‘rt_spin_unlock’
make[2]: *** [kernel/timer.o] Error 1

Extend the ifdef usage to cover the unlock case too.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

---
 kernel/timer.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-stable/kernel/timer.c
===================================================================
--- linux-stable.orig/kernel/timer.c
+++ linux-stable/kernel/timer.c
@@ -1406,7 +1406,11 @@ unsigned long get_next_timer_interrupt(u
 			base->next_timer = __next_timer_interrupt(base);
 		expires = base->next_timer;
 	}
+#ifdef CONFIG_PREEMPT_RT_FULL
 	rt_spin_unlock(&base->lock);
+#else
+	spin_unlock(&base->lock);
+#endif
 
 	if (time_before_eq(expires, now))
 		return now;