From d9865201e397cb62da509fe3291962434e6305e8 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:36 -0500
Subject: [PATCH] rtc: supress rtc printk on RT

commit 308a0c6b40a0f378ccc5d6793fdc384f97c88b2b in tip.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 95acb8c..c973c0b 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -1195,10 +1195,12 @@ static void rtc_dropped_irq(unsigned long data)
 
 	spin_unlock_irq(&rtc_lock);
 
+#ifndef CONFIG_PREEMPT_RT
 	if (printk_ratelimit()) {
 		printk(KERN_WARNING "rtc: lost some interrupts at %ldHz.\n",
 			freq);
 	}
+#endif
 
 	/* Now we have new data */
 	wake_up_interruptible(&rtc_wait);
-- 
1.7.1.1