5.1-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 3.0.1 / drivers-rtc-rtc-tegra.c-properly-initialize-spinlock.patch

From e57ee01750c4954fd0b5e3c6109cd4b870880eb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Mon, 25 Jul 2011 17:13:34 -0700
Subject: drivers/rtc/rtc-tegra.c: properly initialize spinlock
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From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>

commit e57ee01750c4954fd0b5e3c6109cd4b870880eb9 upstream.

Using __SPIN_LOCK_UNLOCKED for a dynamically allocated lock is wrong and
breaks the build with PREEMPT_RT_FULL.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Andrew Chew <achew@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/rtc/rtc-tegra.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -343,7 +343,7 @@ static int __devinit tegra_rtc_probe(str
 
 	/* set context info. */
 	info->pdev = pdev;
-	info->tegra_rtc_lock = __SPIN_LOCK_UNLOCKED(info->tegra_rtc_lock);
+	spin_lock_init(&info->tegra_rtc_lock);
 
 	platform_set_drvdata(pdev, info);