linux: update to linux-4.4.4

packages/linux/package.mk

@@ -40,7 +40,7 @@ case "$LINUX" in
     PKG_DEPENDS_TARGET="$PKG_DEPENDS_TARGET imx6-status-led imx6-soc-fan"
     ;;
   *)
-    PKG_VERSION="4.4.3"
+    PKG_VERSION="4.4.4"
     PKG_URL="http://www.kernel.org/pub/linux/kernel/v4.x/$PKG_NAME-$PKG_VERSION.tar.xz"
     ;;
 esac

packages/linux/patches/4.4.3/linux-0001-Thermal-initialize-thermal-zone-device-correctly.patch

@@ -1,140 +0,0 @@
-From 41656d1702a45bd60a2efde06df3fe74a914235f Mon Sep 17 00:00:00 2001
-From: Chen Yu <yu.c.chen@intel.com>
-Date: Tue, 20 Oct 2015 21:37:59 +0800
-Subject: [PATCH 1/3] Thermal: initialize thermal zone device correctly
-
-After thermal zone device registered, as we have not read any
-temperature before, thus tz->temperature should not be 0,
-which actually means 0C, and thermal trend is not available.
-In this case, we need specially handling for the first
-thermal_zone_device_update().
-
-Both thermal core framework and step_wise governor is
-enhanced to handle this. And since the step_wise governor
-is the only one that uses trends, so it's the only thermal
-governor that needs to be updated.
-
-CC: <stable@vger.kernel.org> #3.18+
-Tested-by: Manuel Krause <manuelkrause@netscape.net>
-Tested-by: szegad <szegadlo@poczta.onet.pl>
-Tested-by: prash <prash.n.rao@gmail.com>
-Tested-by: amish <ammdispose-arch@yahoo.com>
-Tested-by: Matthias <morpheusxyz123@yahoo.de>
-Reviewed-by: Javi Merino <javi.merino@arm.com>
-Signed-off-by: Zhang Rui <rui.zhang@intel.com>
-Signed-off-by: Chen Yu <yu.c.chen@intel.com>
----
- drivers/thermal/step_wise.c    | 17 +++++++++++++++--
- drivers/thermal/thermal_core.c | 19 +++++++++++++++++--
- drivers/thermal/thermal_core.h |  1 +
- include/linux/thermal.h        |  3 +++
- 4 files changed, 36 insertions(+), 4 deletions(-)
-
-diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
-index 2f9f708..ea9366a 100644
---- a/drivers/thermal/step_wise.c
-+++ b/drivers/thermal/step_wise.c
-@@ -63,6 +63,19 @@ static unsigned long get_target_state(struct thermal_instance *instance,
- 	next_target = instance->target;
- 	dev_dbg(&cdev->device, "cur_state=%ld\n", cur_state);
- 
-+	if (!instance->initialized) {
-+		if (throttle) {
-+			next_target = (cur_state + 1) >= instance->upper ?
-+					instance->upper :
-+					((cur_state + 1) < instance->lower ?
-+					instance->lower : (cur_state + 1));
-+		} else {
-+			next_target = THERMAL_NO_TARGET;
-+		}
-+
-+		return next_target;
-+	}
-+
- 	switch (trend) {
- 	case THERMAL_TREND_RAISING:
- 		if (throttle) {
-@@ -149,7 +162,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
- 		dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n",
- 					old_target, (int)instance->target);
- 
--		if (old_target == instance->target)
-+		if (instance->initialized && old_target == instance->target)
- 			continue;
- 
- 		/* Activate a passive thermal instance */
-@@ -161,7 +174,7 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
- 			instance->target == THERMAL_NO_TARGET)
- 			update_passive_instance(tz, trip_type, -1);
- 
--
-+		instance->initialized = true;
- 		instance->cdev->updated = false; /* cdev needs update */
- 	}
- 
-diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
-index d9e525c..682bc1e 100644
---- a/drivers/thermal/thermal_core.c
-+++ b/drivers/thermal/thermal_core.c
-@@ -532,8 +532,22 @@ static void update_temperature(struct thermal_zone_device *tz)
- 	mutex_unlock(&tz->lock);
- 
- 	trace_thermal_temperature(tz);
--	dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
--				tz->last_temperature, tz->temperature);
-+	if (tz->last_temperature == THERMAL_TEMP_INVALID)
-+		dev_dbg(&tz->device, "last_temperature N/A, current_temperature=%d\n",
-+			tz->temperature);
-+	else
-+		dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",
-+			tz->last_temperature, tz->temperature);
-+}
-+
-+static void thermal_zone_device_reset(struct thermal_zone_device *tz)
-+{
-+	struct thermal_instance *pos;
-+
-+	tz->temperature = THERMAL_TEMP_INVALID;
-+	tz->passive = 0;
-+	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
-+		pos->initialized = false;
- }
- 
- void thermal_zone_device_update(struct thermal_zone_device *tz)
-@@ -1900,6 +1914,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
- 
- 	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
- 
-+	thermal_zone_device_reset(tz);
- 	thermal_zone_device_update(tz);
- 
- 	return tz;
-diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
-index d7ac1fc..749d41a 100644
---- a/drivers/thermal/thermal_core.h
-+++ b/drivers/thermal/thermal_core.h
-@@ -41,6 +41,7 @@ struct thermal_instance {
- 	struct thermal_zone_device *tz;
- 	struct thermal_cooling_device *cdev;
- 	int trip;
-+	bool initialized;
- 	unsigned long upper;	/* Highest cooling state for this trip point */
- 	unsigned long lower;	/* Lowest cooling state for this trip point */
- 	unsigned long target;	/* expected cooling state */
-diff --git a/include/linux/thermal.h b/include/linux/thermal.h
-index 157d366..5bcabc7 100644
---- a/include/linux/thermal.h
-+++ b/include/linux/thermal.h
-@@ -43,6 +43,9 @@
- /* Default weight of a bound cooling device */
- #define THERMAL_WEIGHT_DEFAULT 0
- 
-+/* use value, which < 0K, to indicate an invalid/uninitialized temperature */
-+#define THERMAL_TEMP_INVALID	-274000
-+
- /* Unit conversion macros */
- #define DECI_KELVIN_TO_CELSIUS(t)	({			\
- 	long _t = (t);						\
--- 
-1.8.4.2
-

packages/linux/patches/4.4.3/linux-0002-Thermal-handle-thermal-zone-device-properly-during-s.patch

@@ -1,135 +0,0 @@
-From 263fad83855e3da9c768fec15f496a308953d05a Mon Sep 17 00:00:00 2001
-From: Chen Yu <yu.c.chen@intel.com>
-Date: Tue, 20 Oct 2015 21:56:39 +0800
-Subject: [PATCH 2/3] Thermal: handle thermal zone device properly during
- system sleep
-
-Current thermal code does not handle system sleep well because
-1. the cooling device cooling state may be changed during suspend
-2. the previous temperature reading becomes invalid after resumed because
-   it is got before system sleep
-3. updating thermal zone device during suspending/resuming
-   is wrong because some devices may have already been suspended
-   or may have not been resumed.
-
-Thus, the proper way to do this is to cancel all thermal zone
-device update requirements during suspend/resume, and after all
-the devices have been resumed, reset and update every registered
-thermal zone devices.
-
-This also fixes a regression introduced by:
-Commit 19593a1fb1f6 ("ACPI / fan: convert to platform driver")
-Because, with above commit applied, all the fan devices are attached
-to the acpi_general_pm_domain, and they are turned on by the pm_domain
-automatically after resume, without the awareness of thermal core.
-
-CC: <stable@vger.kernel.org> #3.18+
-Reference: https://bugzilla.kernel.org/show_bug.cgi?id=78201
-Reference: https://bugzilla.kernel.org/show_bug.cgi?id=91411
-Tested-by: Manuel Krause <manuelkrause@netscape.net>
-Tested-by: szegad <szegadlo@poczta.onet.pl>
-Tested-by: prash <prash.n.rao@gmail.com>
-Tested-by: amish <ammdispose-arch@yahoo.com>
-Tested-by: Matthias <morpheusxyz123@yahoo.de>
-Signed-off-by: Zhang Rui <rui.zhang@intel.com>
-Signed-off-by: Chen Yu <yu.c.chen@intel.com>
----
- drivers/thermal/thermal_core.c | 45 +++++++++++++++++++++++++++++++++++++++++-
- 1 file changed, 44 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
-index 682bc1e..abeb995 100644
---- a/drivers/thermal/thermal_core.c
-+++ b/drivers/thermal/thermal_core.c
-@@ -37,6 +37,7 @@
- #include <linux/of.h>
- #include <net/netlink.h>
- #include <net/genetlink.h>
-+#include <linux/suspend.h>
- 
- #define CREATE_TRACE_POINTS
- #include <trace/events/thermal.h>
-@@ -59,6 +60,8 @@ static LIST_HEAD(thermal_governor_list);
- static DEFINE_MUTEX(thermal_list_lock);
- static DEFINE_MUTEX(thermal_governor_lock);
- 
-+static atomic_t in_suspend;
-+
- static struct thermal_governor *def_governor;
- 
- static struct thermal_governor *__find_governor(const char *name)
-@@ -554,6 +557,9 @@ void thermal_zone_device_update(struct thermal_zone_device *tz)
- {
- 	int count;
- 
-+	if (atomic_read(&in_suspend))
-+		return;
-+
- 	if (!tz->ops->get_temp)
- 		return;
- 
-@@ -2155,9 +2161,39 @@ static void thermal_unregister_governors(void)
- 	thermal_gov_power_allocator_unregister();
- }
- 
-+static int thermal_pm_notify(struct notifier_block *nb,
-+				unsigned long mode, void *_unused)
-+{
-+	struct thermal_zone_device *tz;
-+
-+	switch (mode) {
-+	case PM_HIBERNATION_PREPARE:
-+	case PM_RESTORE_PREPARE:
-+	case PM_SUSPEND_PREPARE:
-+		atomic_set(&in_suspend, 1);
-+		break;
-+	case PM_POST_HIBERNATION:
-+	case PM_POST_RESTORE:
-+	case PM_POST_SUSPEND:
-+		atomic_set(&in_suspend, 0);
-+		list_for_each_entry(tz, &thermal_tz_list, node) {
-+			thermal_zone_device_reset(tz);
-+			thermal_zone_device_update(tz);
-+		}
-+		break;
-+	default:
-+		break;
-+	}
-+	return 0;
-+}
-+
-+static struct notifier_block thermal_pm_nb = {
-+	.notifier_call = thermal_pm_notify,
-+};
-+
- static int __init thermal_init(void)
- {
--	int result;
-+	int result, notifier_result;
- 
- 	result = thermal_register_governors();
- 	if (result)
-@@ -2175,6 +2211,12 @@ static int __init thermal_init(void)
- 	if (result)
- 		goto exit_netlink;
- 
-+	notifier_result = register_pm_notifier(&thermal_pm_nb);
-+	if (notifier_result)
-+		pr_err("Thermal: Can not register suspend notifier"
-+			"for thermal framework, return %d\n",
-+			notifier_result);
-+
- 	return 0;
- 
- exit_netlink:
-@@ -2194,6 +2236,7 @@ error:
- 
- static void __exit thermal_exit(void)
- {
-+	unregister_pm_notifier(&thermal_pm_nb);
- 	of_thermal_destroy_zones();
- 	genetlink_exit();
- 	class_unregister(&thermal_class);
--- 
-1.8.4.2
-

packages/linux/patches/4.4.3/linux-0003-Thermal-do-thermal-zone-update-after-a-cooling-devic.patch

@@ -1,96 +0,0 @@
-From cbf62adc95451bbbeb14387b3661635cf9cafbb3 Mon Sep 17 00:00:00 2001
-From: Chen Yu <yu.c.chen@intel.com>
-Date: Thu, 22 Oct 2015 15:47:15 +0800
-Subject: [PATCH 3/3] Thermal: do thermal zone update after a cooling device
- registered
-
-When a new cooling device is registered, we need to update the
-thermal zone to set the new registered cooling device to a proper
-state.
-
-This fixes a problem that the system is cool, while the fan devices
-are left running on full speed after boot, if fan device is registered
-after thermal zone device.
-
-Here is the history of why current patch looks like this:
-https://patchwork.kernel.org/patch/7273041/
-
-CC: <stable@vger.kernel.org> #3.18+
-Reference:https://bugzilla.kernel.org/show_bug.cgi?id=92431
-Tested-by: Manuel Krause <manuelkrause@netscape.net>
-Tested-by: szegad <szegadlo@poczta.onet.pl>
-Tested-by: prash <prash.n.rao@gmail.com>
-Tested-by: amish <ammdispose-arch@yahoo.com>
-Signed-off-by: Zhang Rui <rui.zhang@intel.com>
-Signed-off-by: Chen Yu <yu.c.chen@intel.com>
----
- drivers/thermal/thermal_core.c | 12 +++++++++++-
- include/linux/thermal.h        |  1 +
- 2 files changed, 12 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
-index abeb995..6702b9f 100644
---- a/drivers/thermal/thermal_core.c
-+++ b/drivers/thermal/thermal_core.c
-@@ -1341,6 +1341,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
- 	if (!result) {
- 		list_add_tail(&dev->tz_node, &tz->thermal_instances);
- 		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
-+		atomic_set(&tz->need_update, 1);
- 	}
- 	mutex_unlock(&cdev->lock);
- 	mutex_unlock(&tz->lock);
-@@ -1450,6 +1451,7 @@ __thermal_cooling_device_register(struct device_node *np,
- 				  const struct thermal_cooling_device_ops *ops)
- {
- 	struct thermal_cooling_device *cdev;
-+	struct thermal_zone_device *pos = NULL;
- 	int result;
- 
- 	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
-@@ -1494,6 +1496,12 @@ __thermal_cooling_device_register(struct device_node *np,
- 	/* Update binding information for 'this' new cdev */
- 	bind_cdev(cdev);
- 
-+	mutex_lock(&thermal_list_lock);
-+	list_for_each_entry(pos, &thermal_tz_list, node)
-+		if (atomic_cmpxchg(&pos->need_update, 1, 0))
-+			thermal_zone_device_update(pos);
-+	mutex_unlock(&thermal_list_lock);
-+
- 	return cdev;
- }
- 
-@@ -1826,6 +1834,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
- 	tz->trips = trips;
- 	tz->passive_delay = passive_delay;
- 	tz->polling_delay = polling_delay;
-+	atomic_set(&tz->need_update, 0);
- 
- 	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
- 	result = device_register(&tz->device);
-@@ -1921,7 +1930,8 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
- 	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
- 
- 	thermal_zone_device_reset(tz);
--	thermal_zone_device_update(tz);
-+	if (atomic_cmpxchg(&tz->need_update, 1, 0))
-+		thermal_zone_device_update(tz);
- 
- 	return tz;
- 
-diff --git a/include/linux/thermal.h b/include/linux/thermal.h
-index 5bcabc7..4298418 100644
---- a/include/linux/thermal.h
-+++ b/include/linux/thermal.h
-@@ -195,6 +195,7 @@ struct thermal_zone_device {
- 	int emul_temperature;
- 	int passive;
- 	unsigned int forced_passive;
-+	atomic_t need_update;
- 	struct thermal_zone_device_ops *ops;
- 	struct thermal_zone_params *tzp;
- 	struct thermal_governor *governor;
--- 
-1.8.4.2
-