releases/3.0.1/drivers-rtc-rtc-tegra.c-properly-initialize-spinlock.patch

   1 From e57ee01750c4954fd0b5e3c6109cd4b870880eb9 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
   3 Date: Mon, 25 Jul 2011 17:13:34 -0700
   4 Subject: drivers/rtc/rtc-tegra.c: properly initialize spinlock
   5 MIME-Version: 1.0
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   8
   9 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
  10
  11 commit e57ee01750c4954fd0b5e3c6109cd4b870880eb9 upstream.
  12
  13 Using __SPIN_LOCK_UNLOCKED for a dynamically allocated lock is wrong and
  14 breaks the build with PREEMPT_RT_FULL.
  15
  16 Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
  17 Cc: Andrew Chew <achew@nvidia.com>
  18 Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
  19 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  20 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  21
  22 ---
  23  drivers/rtc/rtc-tegra.c |    2 +-
  24  1 file changed, 1 insertion(+), 1 deletion(-)
  25
  26 --- a/drivers/rtc/rtc-tegra.c
  27 +++ b/drivers/rtc/rtc-tegra.c
  28 @@ -343,7 +343,7 @@ static int __devinit tegra_rtc_probe(str
  29
  30         /* set context info. */
  31         info->pdev = pdev;
  32 -       info->tegra_rtc_lock = __SPIN_LOCK_UNLOCKED(info->tegra_rtc_lock);
  33 +       spin_lock_init(&info->tegra_rtc_lock);
  34
  35         platform_set_drvdata(pdev, info);
  36