From: chenqiwu <chenqiwu@xiaomi.com>
Date: Sun, 23 Feb 2020 14:08:22 +0800
Subject: ACPI: list_for_each_safe() -> list_for_each_entry_safe()
Patch-mainline: v5.7-rc1
Git-commit: 07761a4cd43c1d32918e20254236eb96007b1d6c
References: jsc#SLE-16407

Replace list_for_each_safe() and open-coded list entry address
computations with list_for_each_entry_safe() in several places to
simplify code.

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 drivers/acpi/proc.c   |   14 ++++++--------
 drivers/acpi/wakeup.c |   24 +++++++++---------------
 2 files changed, 15 insertions(+), 23 deletions(-)

--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -22,14 +22,13 @@ ACPI_MODULE_NAME("sleep")
 static int
 acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 {
-	struct list_head *node, *next;
+	struct acpi_device *dev, *tmp;
 
 	seq_printf(seq, "Device\tS-state\t  Status   Sysfs node\n");
 
 	mutex_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
-		struct acpi_device *dev =
-		    container_of(node, struct acpi_device, wakeup_list);
+	list_for_each_entry_safe(dev, tmp, &acpi_wakeup_device_list,
+				 wakeup_list) {
 		struct acpi_device_physical_node *entry;
 
 		if (!dev->wakeup.flags.valid)
@@ -96,7 +95,7 @@ acpi_system_write_wakeup_device(struct f
 				const char __user * buffer,
 				size_t count, loff_t * ppos)
 {
-	struct list_head *node, *next;
+	struct acpi_device *dev, *tmp;
 	char strbuf[5];
 	char str[5] = "";
 
@@ -109,9 +108,8 @@ acpi_system_write_wakeup_device(struct f
 	sscanf(strbuf, "%s", str);
 
 	mutex_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
-		struct acpi_device *dev =
-		    container_of(node, struct acpi_device, wakeup_list);
+	list_for_each_entry_safe(dev, tmp, &acpi_wakeup_device_list,
+				 wakeup_list) {
 		if (!dev->wakeup.flags.valid)
 			continue;
 
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -30,12 +30,10 @@ ACPI_MODULE_NAME("wakeup_devices")
  */
 void acpi_enable_wakeup_devices(u8 sleep_state)
 {
-	struct list_head *node, *next;
-
-	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
-		struct acpi_device *dev =
-			container_of(node, struct acpi_device, wakeup_list);
+	struct acpi_device *dev, *tmp;
 
+	list_for_each_entry_safe(dev, tmp, &acpi_wakeup_device_list,
+				 wakeup_list) {
 		if (!dev->wakeup.flags.valid
 		    || sleep_state > (u32) dev->wakeup.sleep_state
 		    || !(device_may_wakeup(&dev->dev)
@@ -57,12 +55,10 @@ void acpi_enable_wakeup_devices(u8 sleep
  */
 void acpi_disable_wakeup_devices(u8 sleep_state)
 {
-	struct list_head *node, *next;
-
-	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
-		struct acpi_device *dev =
-			container_of(node, struct acpi_device, wakeup_list);
+	struct acpi_device *dev, *tmp;
 
+	list_for_each_entry_safe(dev, tmp, &acpi_wakeup_device_list,
+				 wakeup_list) {
 		if (!dev->wakeup.flags.valid
 		    || sleep_state > (u32) dev->wakeup.sleep_state
 		    || !(device_may_wakeup(&dev->dev)
@@ -79,13 +75,11 @@ void acpi_disable_wakeup_devices(u8 slee
 
 int __init acpi_wakeup_device_init(void)
 {
-	struct list_head *node, *next;
+	struct acpi_device *dev, *tmp;
 
 	mutex_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
-		struct acpi_device *dev = container_of(node,
-						       struct acpi_device,
-						       wakeup_list);
+	list_for_each_entry_safe(dev, tmp, &acpi_wakeup_device_list,
+				 wakeup_list) {
 		if (device_can_wakeup(&dev->dev)) {
 			/* Button GPEs are supposed to be always enabled. */
 			acpi_enable_gpe(dev->wakeup.gpe_device,