This is a note to let you know that I've just added the patch titled
watchdog: bcm281xx: Fix use of uninitialized spinlock.
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
watchdog-bcm281xx-fix-use-of-uninitialized-spinlock.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fedf266f9955d9a019643cde199a2fd9a0259f6f Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@xxxxxxxxxx>
Date: Thu, 27 Apr 2017 18:02:32 -0700
Subject: watchdog: bcm281xx: Fix use of uninitialized spinlock.
From: Eric Anholt <eric@xxxxxxxxxx>
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@xxxxxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -304,6 +304,8 @@ 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))
@@ -316,7 +318,6 @@ 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);
bcm_kona_wdt_wdd.parent = &pdev->dev;
Patches currently in stable-queue which might be from eric@xxxxxxxxxx are
queue-4.9/watchdog-bcm281xx-fix-use-of-uninitialized-spinlock.patch