Merge branch 'acpi-assorted'

* acpi-assorted: (21 commits)
  ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points
  ACPI: video: correct acpi_video_bus_add error processing
  ACPI: Fix wrong parameter passed to memblock_reserve
  acpi: video: enhance the quirk detect logic of _BQC
  ACPI: update comments for acpi_event_status
  ACPI: remove "config ACPI_DEBUG_FUNC_TRACE"
  PCI / ACPI: Don't query OSC support with all possible controls
  ACPI / processor_thermal: avoid null pointer deference error
  ACPI / fan: avoid null pointer deference error
  ACPI / video: Fix applying indexed initial brightness value.
  ACPI / video: Make logic a little easier to understand.
  ACPI / video: Fix brightness control initialization for some laptops.
  ACPI: Use resource_size() in osl.c
  ACPI / acpi_pad: Used PTR_RET
  ACPI: suppress compiler warning in container.c
  ACPI: suppress compiler warning in battery.c
  ACPI: suppress compiler warnings in processor_throttling.c
  ACPI: suppress compiler warnings in button.c
  ACPI: replace kmalloc+memcpy with kmemdup
  ACPI: Remove acpi_pci_bind_root() definition
  ...

drivers/acpi/Kconfig

@@ -298,14 +298,6 @@ config ACPI_DEBUG
 	  Documentation/kernel-parameters.txt to control the type and
 	  amount of debug output.
 
-config ACPI_DEBUG_FUNC_TRACE
-	bool "Additionally enable ACPI function tracing"
-	default n
-	depends on ACPI_DEBUG
-	help
-	  ACPI Debug Statements slow down ACPI processing. Function trace
-	  is about half of the penalty and is rarely useful.
-
 config ACPI_PCI_SLOT
 	bool "PCI slot detection driver"
 	depends on SYSFS

drivers/acpi/acpi_pad.c

@@ -236,7 +236,7 @@ static int create_power_saving_task(void)
 	ps_tsks[ps_tsk_num] = kthread_run(power_saving_thread,
 		(void *)(unsigned long)ps_tsk_num,
 		"acpi_pad/%d", ps_tsk_num);
-	rc = IS_ERR(ps_tsks[ps_tsk_num]) ? PTR_ERR(ps_tsks[ps_tsk_num]) : 0;
+	rc = PTR_RET(ps_tsks[ps_tsk_num]);
 	if (!rc)
 		ps_tsk_num++;
 	else

drivers/acpi/battery.c

@@ -146,7 +146,7 @@ struct acpi_battery {
 
 #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat)
 
-inline int acpi_battery_present(struct acpi_battery *battery)
+static inline int acpi_battery_present(struct acpi_battery *battery)
 {
 	return battery->device->status.battery_present;
 }

drivers/acpi/bus.c

@@ -288,13 +288,12 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
 	}
 out_success:
 	context->ret.length = out_obj->buffer.length;
-	context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL);
+	context->ret.pointer = kmemdup(out_obj->buffer.pointer,
+				       context->ret.length, GFP_KERNEL);
 	if (!context->ret.pointer) {
 		status =  AE_NO_MEMORY;
 		goto out_kfree;
 	}
-	memcpy(context->ret.pointer, out_obj->buffer.pointer,
-		context->ret.length);
 	status =  AE_OK;
 
 out_kfree:

drivers/acpi/button.c

@@ -33,6 +33,7 @@
 #include <linux/slab.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
+#include <acpi/button.h>
 
 #define PREFIX "ACPI: "
 

drivers/acpi/container.c

@@ -30,6 +30,8 @@
 
 #include "internal.h"
 
+#include "internal.h"
+
 #define PREFIX "ACPI: "
 
 #define _COMPONENT			ACPI_CONTAINER_COMPONENT

drivers/acpi/fan.c

@@ -174,9 +174,13 @@ static int acpi_fan_add(struct acpi_device *device)
 
 static int acpi_fan_remove(struct acpi_device *device)
 {
-	struct thermal_cooling_device *cdev = acpi_driver_data(device);
+	struct thermal_cooling_device *cdev;
+
+	if (!device)
+		return -EINVAL;
 
-	if (!device || !cdev)
+	cdev =  acpi_driver_data(device);
+	if (!cdev)
 		return -EINVAL;
 
 	sysfs_remove_link(&device->dev.kobj, "thermal_cooling");

drivers/acpi/osl.c

@@ -641,7 +641,7 @@ void __init acpi_initrd_override(void *data, size_t size)
 	 * Both memblock_reserve and e820_add_region (via arch_reserve_mem_area)
 	 * works fine.
 	 */
-	memblock_reserve(acpi_tables_addr, acpi_tables_addr + all_tables_size);
+	memblock_reserve(acpi_tables_addr, all_tables_size);
 	arch_reserve_mem_area(acpi_tables_addr, all_tables_size);
 
 	p = early_ioremap(acpi_tables_addr, all_tables_size);
@@ -1555,7 +1555,7 @@ int acpi_check_resource_conflict(const struct resource *res)
 	else
 		space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
 
-	length = res->end - res->start + 1;
+	length = resource_size(res);
 	if (acpi_enforce_resources != ENFORCE_RESOURCES_NO)
 		warn = 1;
 	clash = acpi_check_address_range(space_id, res->start, length, warn);

drivers/acpi/pci_root.c

@@ -201,8 +201,8 @@ static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root,
 		*control &= OSC_PCI_CONTROL_MASKS;
 		capbuf[OSC_CONTROL_TYPE] = *control | root->osc_control_set;
 	} else {
-		/* Run _OSC query for all possible controls. */
-		capbuf[OSC_CONTROL_TYPE] = OSC_PCI_CONTROL_MASKS;
+		/* Run _OSC query only with existing controls. */
+		capbuf[OSC_CONTROL_TYPE] = root->osc_control_set;
 	}
 
 	status = acpi_pci_run_osc(root->device->handle, capbuf, &result);

drivers/acpi/processor_thermal.c

@@ -218,9 +218,13 @@ processor_get_max_state(struct thermal_cooling_device *cdev,
 			unsigned long *state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
 
-	if (!device || !pr)
+	if (!device)
+		return -EINVAL;
+
+	pr = acpi_driver_data(device);
+	if (!pr)
 		return -EINVAL;
 
 	*state = acpi_processor_max_state(pr);
@@ -232,9 +236,13 @@ processor_get_cur_state(struct thermal_cooling_device *cdev,
 			unsigned long *cur_state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
 
-	if (!device || !pr)
+	if (!device)
+		return -EINVAL;
+
+	pr = acpi_driver_data(device);
+	if (!pr)
 		return -EINVAL;
 
 	*cur_state = cpufreq_get_cur_state(pr->id);
@@ -248,11 +256,15 @@ processor_set_cur_state(struct thermal_cooling_device *cdev,
 			unsigned long state)
 {
 	struct acpi_device *device = cdev->devdata;
-	struct acpi_processor *pr = acpi_driver_data(device);
+	struct acpi_processor *pr;
 	int result = 0;
 	int max_pstate;
 
-	if (!device || !pr)
+	if (!device)
+		return -EINVAL;
+
+	pr = acpi_driver_data(device);
+	if (!pr)
 		return -EINVAL;
 
 	max_pstate = cpufreq_get_max_state(pr->id);

drivers/acpi/processor_throttling.c

@@ -211,9 +211,10 @@ static int acpi_processor_update_tsd_coord(void)
  */
 void acpi_processor_throttling_init(void)
 {
-	if (acpi_processor_update_tsd_coord())
+	if (acpi_processor_update_tsd_coord()) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			"Assume no T-state coordination\n"));
+	}
 
 	return;
 }

drivers/acpi/thermal.c

@@ -723,9 +723,19 @@ static int thermal_get_trend(struct thermal_zone_device *thermal,
 		return -EINVAL;
 
 	if (type == THERMAL_TRIP_ACTIVE) {
-		/* aggressive active cooling */
-		*trend = THERMAL_TREND_RAISING;
-		return 0;
+		unsigned long trip_temp;
+		unsigned long temp = KELVIN_TO_MILLICELSIUS(tz->temperature,
+							tz->kelvin_offset);
+		if (thermal_get_trip_temp(thermal, trip, &trip_temp))
+			return -EINVAL;
+
+		if (temp > trip_temp) {
+			*trend = THERMAL_TREND_RAISING;
+			return 0;
+		} else {
+			/* Fall back on default trend */
+			return -EINVAL;
+		}
 	}
 
 	/*

include/acpi/acpi_drivers.h

@@ -95,7 +95,6 @@ int acpi_pci_link_free_irq(acpi_handle handle);
 struct pci_bus;
 
 struct pci_dev *acpi_get_pci_dev(acpi_handle);
-int acpi_pci_bind_root(struct acpi_device *device);
 
 /* Arch-defined function to add a bus to the system */
 

include/acpi/actypes.h

@@ -650,13 +650,14 @@ typedef u32 acpi_event_type;
  * The encoding of acpi_event_status is illustrated below.
  * Note that a set bit (1) indicates the property is TRUE
  * (e.g. if bit 0 is set then the event is enabled).
- * +-------------+-+-+-+
- * |   Bits 31:3 |2|1|0|
- * +-------------+-+-+-+
- *          |     | | |
- *          |     | | +- Enabled?
- *          |     | +--- Enabled for wake?
- *          |     +----- Set?
+ * +-------------+-+-+-+-+
+ * |   Bits 31:4 |3|2|1|0|
+ * +-------------+-+-+-+-+
+ *          |     | | | |
+ *          |     | | | +- Enabled?
+ *          |     | | +--- Enabled for wake?
+ *          |     | +----- Set?
+ *          |     +------- Has a handler?
  *          +----------- <Reserved>
  */
 typedef u32 acpi_event_status;