uuid_le guid_input;
        struct wmi_block *wblock;
        struct guid_block *block;
-       struct list_head *p;
 
        if (uuid_le_to_bin(guid_string, &guid_input))
                return false;
 
-       list_for_each(p, &wmi_block_list) {
-               wblock = list_entry(p, struct wmi_block, list);
+       list_for_each_entry(wblock, &wmi_block_list, list) {
                block = &wblock->gblock;
 
                if (memcmp(block->guid, &guid_input, 16) == 0) {
        struct wmi_block *block;
        acpi_status status = AE_NOT_EXIST;
        uuid_le guid_input;
-       struct list_head *p;
 
        if (!guid || !handler)
                return AE_BAD_PARAMETER;
        if (uuid_le_to_bin(guid, &guid_input))
                return AE_BAD_PARAMETER;
 
-       list_for_each(p, &wmi_block_list) {
+       list_for_each_entry(block, &wmi_block_list, list) {
                acpi_status wmi_status;
-               block = list_entry(p, struct wmi_block, list);
 
                if (memcmp(block->gblock.guid, &guid_input, 16) == 0) {
                        if (block->handler &&
        struct wmi_block *block;
        acpi_status status = AE_NOT_EXIST;
        uuid_le guid_input;
-       struct list_head *p;
 
        if (!guid)
                return AE_BAD_PARAMETER;
        if (uuid_le_to_bin(guid, &guid_input))
                return AE_BAD_PARAMETER;
 
-       list_for_each(p, &wmi_block_list) {
+       list_for_each_entry(block, &wmi_block_list, list) {
                acpi_status wmi_status;
-               block = list_entry(p, struct wmi_block, list);
 
                if (memcmp(block->gblock.guid, &guid_input, 16) == 0) {
                        if (!block->handler ||
        union acpi_object params[1];
        struct guid_block *gblock;
        struct wmi_block *wblock;
-       struct list_head *p;
 
        input.count = 1;
        input.pointer = params;
        params[0].type = ACPI_TYPE_INTEGER;
        params[0].integer.value = event;
 
-       list_for_each(p, &wmi_block_list) {
-               wblock = list_entry(p, struct wmi_block, list);
+       list_for_each_entry(wblock, &wmi_block_list, list) {
                gblock = &wblock->gblock;
 
                if ((gblock->flags & ACPI_WMI_EVENT) &&
 {
        struct guid_block *block;
        struct wmi_block *wblock;
-       struct list_head *p;
        bool found_it = false;
 
-       list_for_each(p, &wmi_block_list) {
-               wblock = list_entry(p, struct wmi_block, list);
+       list_for_each_entry(wblock, &wmi_block_list, list) {
                block = &wblock->gblock;
 
                if (wblock->acpi_device->handle == handle &&