diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index d58a2aba0930..c9311be29a64 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -212,7 +212,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
 	union acpi_object object = { 0 };
 	struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
 	struct acpi_processor *pr = acpi_driver_data(device);
-	int cpu_index, device_declaration = 0;
+	int apic_id, cpu_index, device_declaration = 0;
 	acpi_status status = AE_OK;
 	static int cpu0_initialized;
 	unsigned long long value;
@@ -258,18 +258,21 @@ static int acpi_processor_get_info(struct acpi_device *device)
 		device_declaration = 1;
 		pr->acpi_id = value;
 	}
-	pr->apic_id = acpi_get_apicid(pr->handle, device_declaration,
-					pr->acpi_id);
-	cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id);
 
-	/* Handle UP system running SMP kernel, with no LAPIC in MADT */
-	if (!cpu0_initialized && (cpu_index == -1) &&
-	    (num_online_cpus() == 1)) {
-		cpu_index = 0;
+	apic_id = acpi_get_apicid(pr->handle, device_declaration, pr->acpi_id);
+	if (apic_id < 0) {
+		acpi_handle_err(pr->handle, "failed to get CPU APIC ID.\n");
+		return -ENODEV;
 	}
+	pr->apic_id = apic_id;
 
-	cpu0_initialized = 1;
-
+	cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id);
+	if (!cpu0_initialized) {
+		cpu0_initialized = 1;
+		/* Handle UP system running SMP kernel, with no LAPIC in MADT */
+		if ((cpu_index == -1) && (num_online_cpus() == 1))
+			cpu_index = 0;
+	}
 	pr->id = cpu_index;
 
 	/*
@@ -282,6 +285,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
 		if (ret)
 			return ret;
 	}
+
 	/*
 	 * On some boxes several processors use the same processor bus id.
 	 * But they are located in different scope. For example:
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 05ee8f61bfb5..10e4964d051a 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -322,6 +322,56 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "2349D15"),
 		},
 	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP ProBook 2013 models",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP ProBook "),
+		     DMI_MATCH(DMI_PRODUCT_NAME, " G1"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP EliteBook 2013 models",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook "),
+		     DMI_MATCH(DMI_PRODUCT_NAME, " G1"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP ZBook 14",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP ZBook 14"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP ZBook 15",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP ZBook 15"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP ZBook 17",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP ZBook 17"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP EliteBook 8780w",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8780w"),
+		},
+	},
 
 	/*
 	 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 9e3a6cb99f90..11c11f6b8fa1 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -100,7 +100,6 @@ struct acpi_button {
 	struct input_dev *input;
 	char phys[32];			/* for input device */
 	unsigned long pushed;
-	bool wakeup_enabled;
 };
 
 static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
@@ -406,16 +405,6 @@ static int acpi_button_add(struct acpi_device *device)
 		lid_device = device;
 	}
 
-	if (device->wakeup.flags.valid) {
-		/* Button's GPE is run-wake GPE */
-		acpi_enable_gpe(device->wakeup.gpe_device,
-				device->wakeup.gpe_number);
-		if (!device_may_wakeup(&device->dev)) {
-			device_set_wakeup_enable(&device->dev, true);
-			button->wakeup_enabled = true;
-		}
-	}
-
 	printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
 	return 0;
 
@@ -432,13 +421,6 @@ static int acpi_button_remove(struct acpi_device *device)
 {
 	struct acpi_button *button = acpi_driver_data(device);
 
-	if (device->wakeup.flags.valid) {
-		acpi_disable_gpe(device->wakeup.gpe_device,
-				device->wakeup.gpe_number);
-		if (button->wakeup_enabled)
-			device_set_wakeup_enable(&device->dev, false);
-	}
-
 	acpi_button_remove_fs(device);
 	input_unregister_device(button->input);
 	kfree(button);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 47b1111afc90..959d41acc108 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -753,9 +753,9 @@ static int ec_install_handlers(struct acpi_ec *ec)
 			pr_err("Fail in evaluating the _REG object"
 				" of EC device. Broken bios is suspected.\n");
 		} else {
+			acpi_disable_gpe(NULL, ec->gpe);
 			acpi_remove_gpe_handler(NULL, ec->gpe,
 				&acpi_ec_gpe_handler);
-			acpi_disable_gpe(NULL, ec->gpe);
 			return -ENODEV;
 		}
 	}
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 54ab26664039..b718806657cd 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -666,11 +666,8 @@ static void acpi_hibernation_leave(void)
 	/* Reprogram control registers */
 	acpi_leave_sleep_state_prep(ACPI_STATE_S4);
 	/* Check the hardware signature */
-	if (facs && s4_hardware_signature != facs->hardware_signature) {
-		printk(KERN_EMERG "ACPI: Hardware changed while hibernated, "
-			"cannot resume!\n");
-		panic("ACPI S4 hardware signature mismatch");
-	}
+	if (facs && s4_hardware_signature != facs->hardware_signature)
+		pr_crit("ACPI: Hardware changed while hibernated, success doubtful!\n");
 	/* Restore the NVS memory area */
 	suspend_nvs_restore();
 	/* Allow EC transactions to happen. */
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 1fd21ad69c98..8349a555b92b 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -861,7 +861,7 @@ acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal,
 	return acpi_thermal_cooling_device_cb(thermal, cdev, false);
 }
 
-static const struct thermal_zone_device_ops acpi_thermal_zone_ops = {
+static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.bind = acpi_thermal_bind_cooling_device,
 	.unbind	= acpi_thermal_unbind_cooling_device,
 	.get_temp = thermal_get_temp,
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 84875fd4c74f..f0447d3daf2c 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -50,7 +50,7 @@ static bool acpi_video_caps_checked;
 
 static acpi_status
 acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
-			  void **retyurn_value)
+			  void **return_value)
 {
 	long *cap = context;