m32r: add rtc_lock variable

Add a spinlock variable "rtc_lock".
This is taken from arch/arm/kernel/time.c.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>

diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index ba61c4c73202769f947c87ace55c3d8453b2f336..e7fee0f198d51a22947a7ff4817a6d4e35d27438 100644 (file)
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -33,6 +33,15 @@
 
 #include <asm/hw_irq.h>
 
+#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
+/* this needs a better home */
+DEFINE_SPINLOCK(rtc_lock);
+
+#ifdef CONFIG_RTC_DRV_CMOS_MODULE
+EXPORT_SYMBOL(rtc_lock);
+#endif
+#endif  /* pc-style 'CMOS' RTC support */
+
 #ifdef CONFIG_SMP
 extern void smp_local_timer_interrupt(void);
 #endif