1 files changed, 80 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch b/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch
new file mode 100644
index 0000000..3cf723a
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch
@@ -0,0 +1,80 @@
+From 43f676ace2e0591718ff493d290bc49b35ec2ffc Mon Sep 17 00:00:00 2001
+From: Guenter Roeck <linux@roeck-us.net>
+Date: Fri, 25 Dec 2015 16:01:44 -0800
+Subject: watchdog: da9055_wdt: Drop reference counting
+
+Reference counting is now implemented in the watchdog core and no longer
+required in watchdog drivers.
+
+Since it was implememented a no-op, and since the local memory is allocated
+with devm_kzalloc(), the reference counting code in the driver really did
+not really work anyway, and this patch effectively fixes a bug which could
+cause a crash on unloading if the watchdog device was still open.
+
+Signed-off-by: Guenter Roeck <linux@roeck-us.net>
+Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
+---
+ drivers/watchdog/da9055_wdt.c | 24 ------------------------
+ 1 file changed, 24 deletions(-)
+
+--- a/drivers/watchdog/da9055_wdt.c
++++ b/drivers/watchdog/da9055_wdt.c
+@@ -35,7 +35,6 @@ MODULE_PARM_DESC(nowayout,
+ struct da9055_wdt_data {
+ 	struct watchdog_device wdt;
+ 	struct da9055 *da9055;
+-	struct kref kref;
+ };
+ 
+ static const struct {
+@@ -99,24 +98,6 @@ static int da9055_wdt_ping(struct watchd
+ 				 DA9055_WATCHDOG_MASK, 1);
+ }
+ 
+-static void da9055_wdt_release_resources(struct kref *r)
+-{
+-}
+-
+-static void da9055_wdt_ref(struct watchdog_device *wdt_dev)
+-{
+-	struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev);
+-
+-	kref_get(&driver_data->kref);
+-}
+-
+-static void da9055_wdt_unref(struct watchdog_device *wdt_dev)
+-{
+-	struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev);
+-
+-	kref_put(&driver_data->kref, da9055_wdt_release_resources);
+-}
+-
+ static int da9055_wdt_start(struct watchdog_device *wdt_dev)
+ {
+ 	return da9055_wdt_set_timeout(wdt_dev, wdt_dev->timeout);
+@@ -138,8 +119,6 @@ static const struct watchdog_ops da9055_
+ 	.stop = da9055_wdt_stop,
+ 	.ping = da9055_wdt_ping,
+ 	.set_timeout = da9055_wdt_set_timeout,
+-	.ref = da9055_wdt_ref,
+-	.unref = da9055_wdt_unref,
+ };
+ 
+ static int da9055_wdt_probe(struct platform_device *pdev)
+@@ -165,8 +144,6 @@ static int da9055_wdt_probe(struct platf
+ 	watchdog_set_nowayout(da9055_wdt, nowayout);
+ 	watchdog_set_drvdata(da9055_wdt, driver_data);
+ 
+-	kref_init(&driver_data->kref);
+-
+ 	ret = da9055_wdt_stop(da9055_wdt);
+ 	if (ret < 0) {
+ 		dev_err(&pdev->dev, "Failed to stop watchdog, %d\n", ret);
+@@ -189,7 +166,6 @@ static int da9055_wdt_remove(struct plat
+ 	struct da9055_wdt_data *driver_data = platform_get_drvdata(pdev);
+ 
+ 	watchdog_unregister_device(&driver_data->wdt);
+-	kref_put(&driver_data->kref, da9055_wdt_release_resources);
+ 
+ 	return 0;
+ }