[PATCH 3.16 067/233] watchdog: bcm281xx: Fix use of uninitialized spinlock.

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.kernel
Subject	[PATCH 3.16 067/233] watchdog: bcm281xx: Fix use of uninitialized spinlock.
Date	2017-09-10 01:30 +0200
Message-ID	<unXmj-3Vl-53@gated-at.bofh.it> (permalink)
References	<unWqd-3ep-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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3.16.48-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Anholt <eric@anholt.net>

commit fedf266f9955d9a019643cde199a2fd9a0259f6f upstream.

The bcm_kona_wdt_set_resolution_reg() call takes the spinlock, so
initialize it earlier.  Fixes a warning at boot with lock debugging
enabled.

Fixes: 6adb730dc208 ("watchdog: bcm281xx: Watchdog Driver")
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 drivers/watchdog/bcm_kona_wdt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/watchdog/bcm_kona_wdt.c
+++ b/drivers/watchdog/bcm_kona_wdt.c
@@ -299,6 +299,8 @@ static int bcm_kona_wdt_probe(struct pla
 	if (!wdt)
 		return -ENOMEM;
 
+	spin_lock_init(&wdt->lock);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	wdt->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(wdt->base))
@@ -311,7 +313,6 @@ static int bcm_kona_wdt_probe(struct pla
 		return ret;
 	}
 
-	spin_lock_init(&wdt->lock);
 	platform_set_drvdata(pdev, wdt);
 	watchdog_set_drvdata(&bcm_kona_wdt_wdd, wdt);

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[PATCH 3.16 067/233] watchdog: bcm281xx: Fix use of uninitialized  spinlock. Ben Hutchings <ben@decadent.org.uk> - 2017-09-10 01:30 +0200

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