Revert "Thermal: handle thermal zone device properly during system sleep"

This reverts commit <a67208e94d945ad890f8dc4734ec5fdb3219cc03>.

This commit prevented xo shutdown as during suspend exit, WSA sensor for
temperature read triggered a slimbus wakeup. Slimbus suspend mechanism
will expect a qmi message after the system has entered suspend. This
will wake the system from suspend. This happens recursively and
system will never enter suspend.

Revert this commit to avoid this issue, till the slimbus suspend
mechanism is fixed.

Change-Id: I4236f4b6272d0bccaf8a2d6f7d5435caf044bd59
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>

1 files changed, 0 insertions, 42 deletions

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index d7bedf8beee3..e03d3b41c25b 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -39,7 +39,6 @@
 #include <linux/kthread.h>
 #include <net/netlink.h>
 #include <net/genetlink.h>
-#include <linux/suspend.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/thermal.h>
@@ -64,8 +63,6 @@ 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)
@@ -961,9 +958,6 @@ void thermal_zone_device_update(struct thermal_zone_device *tz)
 {
 	int count;
 
-	if (atomic_read(&in_suspend))
-		return;
-
 	if (!tz->ops->get_temp)
 		return;
 
@@ -2641,36 +2635,6 @@ 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;
@@ -2691,11 +2655,6 @@ static int __init thermal_init(void)
 	if (result)
 		goto exit_netlink;
 
-	result = register_pm_notifier(&thermal_pm_nb);
-	if (result)
-		pr_warn("Thermal: Can not register suspend notifier, return %d\n",
-			result);
-
 	return 0;
 
 exit_netlink:
@@ -2715,7 +2674,6 @@ error:
 
 static void __exit thermal_exit(void)
 {
-	unregister_pm_notifier(&thermal_pm_nb);
 	of_thermal_destroy_zones();
 	genetlink_exit();
 	class_unregister(&thermal_class);