--- zzzz-none-000/linux-3.10.107/drivers/xen/xen-acpi-cpuhotplug.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/xen/xen-acpi-cpuhotplug.c	2021-02-04 17:41:59.000000000 +0000
@@ -15,6 +15,8 @@
  * details.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -22,10 +24,7 @@
 #include <linux/cpu.h>
 #include <linux/acpi.h>
 #include <linux/uaccess.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
 #include <acpi/processor.h>
-
 #include <xen/acpi.h>
 #include <xen/interface/platform.h>
 #include <asm/xen/hypercall.h>
@@ -47,13 +46,7 @@
 	unsigned long long value;
 	union acpi_object object = { 0 };
 	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
-	struct acpi_processor *pr;
-
-	pr = acpi_driver_data(device);
-	if (!pr) {
-		pr_err(PREFIX "Cannot find driver data\n");
-		return -EINVAL;
-	}
+	struct acpi_processor *pr = acpi_driver_data(device);
 
 	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
 		/* Declared with "Processor" statement; match ProcessorID */
@@ -78,7 +71,7 @@
 
 	pr->id = xen_pcpu_id(pr->acpi_id);
 
-	if ((int)pr->id < 0)
+	if (invalid_logical_cpuid(pr->id))
 		/* This cpu is not presented at hypervisor, try to hotadd it */
 		if (ACPI_FAILURE(xen_acpi_cpu_hotadd(pr))) {
 			pr_err(PREFIX "Hotadd CPU (acpi_id = %d) failed.\n",
@@ -89,7 +82,7 @@
 	return 0;
 }
 
-static int __cpuinit xen_acpi_processor_add(struct acpi_device *device)
+static int xen_acpi_processor_add(struct acpi_device *device)
 {
 	int ret;
 	struct acpi_processor *pr;
@@ -227,7 +220,7 @@
 		return AE_ERROR;
 
 	pr->id = xen_hotadd_cpu(pr);
-	if ((int)pr->id < 0)
+	if (invalid_logical_cpuid(pr->id))
 		return AE_ERROR;
 
 	/*
@@ -267,7 +260,8 @@
 		if (!is_processor_present(handle))
 			break;
 
-		if (!acpi_bus_get_device(handle, &device))
+		acpi_bus_get_device(handle, &device);
+		if (acpi_device_enumerated(device))
 			break;
 
 		result = acpi_bus_scan(handle);
@@ -275,8 +269,9 @@
 			pr_err(PREFIX "Unable to add the device\n");
 			break;
 		}
-		result = acpi_bus_get_device(handle, &device);
-		if (result) {
+		device = NULL;
+		acpi_bus_get_device(handle, &device);
+		if (!acpi_device_enumerated(device)) {
 			pr_err(PREFIX "Missing device object\n");
 			break;
 		}
@@ -312,7 +307,7 @@
 		goto out;
 	}
 
-	(void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
+	(void) acpi_evaluate_ost(handle, event, ost_code, NULL);
 
 out:
 	acpi_scan_lock_release();