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-rw-r--r--drivers/acpi/Kconfig1
-rw-r--r--drivers/acpi/ac.c20
-rw-r--r--drivers/acpi/acpi_memhotplug.c34
-rw-r--r--drivers/acpi/acpica/acobject.h1
-rw-r--r--drivers/acpi/acpica/dsopcode.c24
-rw-r--r--drivers/acpi/acpica/exfldio.c6
-rw-r--r--drivers/acpi/acpica/exstorob.c12
-rw-r--r--drivers/acpi/battery.c34
-rw-r--r--drivers/acpi/blacklist.c16
-rw-r--r--drivers/acpi/bus.c91
-rw-r--r--drivers/acpi/glue.c40
-rw-r--r--drivers/acpi/osl.c50
-rw-r--r--drivers/acpi/pci_bind.c313
-rw-r--r--drivers/acpi/pci_irq.c17
-rw-r--r--drivers/acpi/pci_root.c297
-rw-r--r--drivers/acpi/power.c28
-rw-r--r--drivers/acpi/processor_core.c51
-rw-r--r--drivers/acpi/processor_idle.c49
-rw-r--r--drivers/acpi/processor_thermal.c6
-rw-r--r--drivers/acpi/processor_throttling.c30
-rw-r--r--drivers/acpi/scan.c69
-rw-r--r--drivers/acpi/sleep.c8
-rw-r--r--drivers/acpi/system.c2
-rw-r--r--drivers/acpi/video.c66
-rw-r--r--drivers/acpi/video_detect.c9
25 files changed, 555 insertions, 719 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 431f8b43955..7ec7d88c599 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -266,6 +266,7 @@ config ACPI_DEBUG_FUNC_TRACE
config ACPI_PCI_SLOT
tristate "PCI slot detection driver"
+ depends on SYSFS
default n
help
This driver creates entries in /sys/bus/pci/slots/ for all PCI
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 88e42abf5d8..0df8fcb687d 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -61,6 +61,7 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file);
static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device, int type);
static int acpi_ac_resume(struct acpi_device *device);
+static void acpi_ac_notify(struct acpi_device *device, u32 event);
static const struct acpi_device_id ac_device_ids[] = {
{"ACPI0003", 0},
@@ -72,10 +73,12 @@ static struct acpi_driver acpi_ac_driver = {
.name = "ac",
.class = ACPI_AC_CLASS,
.ids = ac_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_ac_add,
.remove = acpi_ac_remove,
.resume = acpi_ac_resume,
+ .notify = acpi_ac_notify,
},
};
@@ -220,16 +223,14 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
Driver Model
-------------------------------------------------------------------------- */
-static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_ac_notify(struct acpi_device *device, u32 event)
{
- struct acpi_ac *ac = data;
- struct acpi_device *device = NULL;
+ struct acpi_ac *ac = acpi_driver_data(device);
if (!ac)
return;
- device = ac->device;
switch (event) {
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -253,7 +254,6 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
static int acpi_ac_add(struct acpi_device *device)
{
int result = 0;
- acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
@@ -286,13 +286,6 @@ static int acpi_ac_add(struct acpi_device *device)
ac->charger.get_property = get_ac_property;
power_supply_register(&ac->device->dev, &ac->charger);
#endif
- status = acpi_install_notify_handler(device->handle,
- ACPI_ALL_NOTIFY, acpi_ac_notify,
- ac);
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto end;
- }
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
@@ -328,7 +321,6 @@ static int acpi_ac_resume(struct acpi_device *device)
static int acpi_ac_remove(struct acpi_device *device, int type)
{
- acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
@@ -337,8 +329,6 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
ac = acpi_driver_data(device);
- status = acpi_remove_notify_handler(device->handle,
- ACPI_ALL_NOTIFY, acpi_ac_notify);
#ifdef CONFIG_ACPI_SYSFS_POWER
if (ac->charger.dev)
power_supply_unregister(&ac->charger);
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 7a0f4aa4fa1..9a62224cc27 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -38,6 +38,9 @@
#define _COMPONENT ACPI_MEMORY_DEVICE_COMPONENT
+#undef PREFIX
+#define PREFIX "ACPI:memory_hp:"
+
ACPI_MODULE_NAME("acpi_memhotplug");
MODULE_AUTHOR("Naveen B S <naveen.b.s@intel.com>");
MODULE_DESCRIPTION("Hotplug Mem Driver");
@@ -153,6 +156,7 @@ acpi_memory_get_device(acpi_handle handle,
acpi_handle phandle;
struct acpi_device *device = NULL;
struct acpi_device *pdevice = NULL;
+ int result;
if (!acpi_bus_get_device(handle, &device) && device)
@@ -165,9 +169,9 @@ acpi_memory_get_device(acpi_handle handle,
}
/* Get the parent device */
- status = acpi_bus_get_device(phandle, &pdevice);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Cannot get acpi bus device"));
+ result = acpi_bus_get_device(phandle, &pdevice);
+ if (result) {
+ printk(KERN_WARNING PREFIX "Cannot get acpi bus device");
return -EINVAL;
}
@@ -175,9 +179,9 @@ acpi_memory_get_device(acpi_handle handle,
* Now add the notified device. This creates the acpi_device
* and invokes .add function
*/
- status = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Cannot add acpi bus"));
+ result = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
+ if (result) {
+ printk(KERN_WARNING PREFIX "Cannot add acpi bus");
return -EINVAL;
}
@@ -238,7 +242,12 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
num_enabled++;
continue;
}
-
+ /*
+ * If the memory block size is zero, please ignore it.
+ * Don't try to do the following memory hotplug flowchart.
+ */
+ if (!info->length)
+ continue;
if (node < 0)
node = memory_add_physaddr_to_nid(info->start_addr);
@@ -253,8 +262,15 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
mem_device->state = MEMORY_INVALID_STATE;
return -EINVAL;
}
-
- return result;
+ /*
+ * Sometimes the memory device will contain several memory blocks.
+ * When one memory block is hot-added to the system memory, it will
+ * be regarded as a success.
+ * Otherwise if the last memory block can't be hot-added to the system
+ * memory, it will be failure and the memory device can't be bound with
+ * driver.
+ */
+ return 0;
}
static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 544dcf83492..eb6f038b03d 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -97,6 +97,7 @@
#define AOPOBJ_OBJECT_INITIALIZED 0x08
#define AOPOBJ_SETUP_COMPLETE 0x10
#define AOPOBJ_SINGLE_DATUM 0x20
+#define AOPOBJ_INVALID 0x40 /* Used if host OS won't allow an op_region address */
/******************************************************************************
*
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 584d766e6f1..b79978f7bc7 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -397,6 +397,30 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Validate the region address/length via the host OS */
+
+ status = acpi_os_validate_address(obj_desc->region.space_id,
+ obj_desc->region.address,
+ (acpi_size) obj_desc->region.length,
+ acpi_ut_get_node_name(node));
+
+ if (ACPI_FAILURE(status)) {
+ /*
+ * Invalid address/length. We will emit an error message and mark
+ * the region as invalid, so that it will cause an additional error if
+ * it is ever used. Then return AE_OK.
+ */
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During address validation of OpRegion [%4.4s]",
+ node->name.ascii));
+ obj_desc->common.flags |= AOPOBJ_INVALID;
+ status = AE_OK;
+ }
+
return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index d4075b82102..6687be167f5 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -113,6 +113,12 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
}
}
+ /* Exit if Address/Length have been disallowed by the host OS */
+
+ if (rgn_desc->common.flags & AOPOBJ_INVALID) {
+ return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
+ }
+
/*
* Exit now for SMBus address space, it has a non-linear address space
* and the request cannot be directly validated
diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c
index 67340cc7014..257706e7734 100644
--- a/drivers/acpi/acpica/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -70,6 +70,12 @@ acpi_ex_store_buffer_to_buffer(union acpi_operand_object *source_desc,
ACPI_FUNCTION_TRACE_PTR(ex_store_buffer_to_buffer, source_desc);
+ /* If Source and Target are the same, just return */
+
+ if (source_desc == target_desc) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
/* We know that source_desc is a buffer by now */
buffer = ACPI_CAST_PTR(u8, source_desc->buffer.pointer);
@@ -161,6 +167,12 @@ acpi_ex_store_string_to_string(union acpi_operand_object *source_desc,
ACPI_FUNCTION_TRACE_PTR(ex_store_string_to_string, source_desc);
+ /* If Source and Target are the same, just return */
+
+ if (source_desc == target_desc) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
/* We know that source_desc is a string by now */
buffer = ACPI_CAST_PTR(u8, source_desc->string.pointer);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b0de6312919..58b4517ce71 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -796,13 +796,12 @@ static void acpi_battery_remove_fs(struct acpi_device *device)
Driver Interface
-------------------------------------------------------------------------- */
-static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_battery_notify(struct acpi_device *device, u32 event)
{
- struct acpi_battery *battery = data;
- struct acpi_device *device;
+ struct acpi_battery *battery = acpi_driver_data(device);
+
if (!battery)
return;
- device = battery->device;
acpi_battery_update(battery);
acpi_bus_generate_proc_event(device, event,
acpi_battery_present(battery));
@@ -819,7 +818,6 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
- acpi_status status = 0;
struct acpi_battery *battery = NULL;
if (!device)
return -EINVAL;
@@ -834,22 +832,12 @@ static int acpi_battery_add(struct acpi_device *device)
acpi_battery_update(battery);
#ifdef CONFIG_ACPI_PROCFS_POWER
result = acpi_battery_add_fs(device);
- if (result)
- goto end;
#endif
- status = acpi_install_notify_handler(device->handle,
- ACPI_ALL_NOTIFY,
- acpi_battery_notify, battery);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler"));
- result = -ENODEV;
- goto end;
- }
- printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
- ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
- device->status.battery_present ? "present" : "absent");
- end:
- if (result) {
+ if (!result) {
+ printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
+ ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
+ device->status.battery_present ? "present" : "absent");
+ } else {
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_remove_fs(device);
#endif
@@ -860,15 +848,11 @@ static int acpi_battery_add(struct acpi_device *device)
static int acpi_battery_remove(struct acpi_device *device, int type)
{
- acpi_status status = 0;
struct acpi_battery *battery = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
battery = acpi_driver_data(device);
- status = acpi_remove_notify_handler(device->handle,
- ACPI_ALL_NOTIFY,
- acpi_battery_notify);
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_remove_fs(device);
#endif
@@ -896,10 +880,12 @@ static struct acpi_driver acpi_battery_driver = {
.name = "battery",
.class = ACPI_BATTERY_CLASS,
.ids = battery_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_battery_add,
.resume = acpi_battery_resume,
.remove = acpi_battery_remove,
+ .notify = acpi_battery_notify,
},
};
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 09c69806c1f..f6baa77deef 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -192,6 +192,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
},
},
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-NS10J_S",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
+ },
+ },
+ {
+ .callback = dmi_disable_osi_vista,
+ .ident = "Sony VGN-SR290J",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
+ },
+ },
/*
* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ae862f1798d..2876fc70c3a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,18 +450,16 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
Notification Handling
-------------------------------------------------------------------------- */
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static void acpi_bus_check_device(acpi_handle handle)
{
- acpi_status status = 0;
+ struct acpi_device *device;
+ acpi_status status;
struct acpi_device_status old_status;
-
+ if (acpi_bus_get_device(handle, &device))
+ return;
if (!device)
- return -EINVAL;
-
- if (status_changed)
- *status_changed = 0;
+ return;
old_status = device->status;
@@ -471,22 +469,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
*/
if (device->parent && !device->parent->status.present) {
device->status = device->parent->status;
- if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
- if (status_changed)
- *status_changed = 1;
- }
- return 0;
+ return;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ return;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
- return 0;
-
- if (status_changed)
- *status_changed = 1;
+ return;
/*
* Device Insertion/Removal
@@ -498,33 +489,17 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
/* TBD: Handle device removal */
}
-
- return 0;
}
-static int acpi_bus_check_scope(struct acpi_device *device)
+static void acpi_bus_check_scope(acpi_handle handle)
{
- int result = 0;
- int status_changed = 0;
-
-
- if (!device)
- return -EINVAL;
-
/* Status Change? */
- result = acpi_bus_check_device(device, &status_changed);
- if (result)
- return result;
-
- if (!status_changed)
- return 0;
+ acpi_bus_check_device(handle);
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
-
- return 0;
}
static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
@@ -547,22 +522,19 @@ EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
*/
static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
- int result = 0;
struct acpi_device *device = NULL;
+ struct acpi_driver *driver;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
+ type, handle));
blocking_notifier_call_chain(&acpi_bus_notify_list,
type, (void *)handle);
- if (acpi_bus_get_device(handle, &device))
- return;
-
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received BUS CHECK notification for device [%s]\n",
- device->pnp.bus_id));
- result = acpi_bus_check_scope(device);
+ acpi_bus_check_scope(handle);
/*
* TBD: We'll need to outsource certain events to non-ACPI
* drivers via the device manager (device.c).
@@ -570,10 +542,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
case ACPI_NOTIFY_DEVICE_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE CHECK notification for device [%s]\n",
- device->pnp.bus_id));
- result = acpi_bus_check_device(device, NULL);
+ acpi_bus_check_device(handle);
/*
* TBD: We'll need to outsource certain events to non-ACPI
* drivers via the device manager (device.c).
@@ -581,44 +550,26 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
case ACPI_NOTIFY_DEVICE_WAKE:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE WAKE notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_EJECT_REQUEST:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received EJECT REQUEST notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received DEVICE CHECK LIGHT notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD: Exactly what does 'light' mean? */
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received FREQUENCY MISMATCH notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_BUS_MODE_MISMATCH:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received BUS MODE MISMATCH notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
case ACPI_NOTIFY_POWER_FAULT:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Received POWER FAULT notification for device [%s]\n",
- device->pnp.bus_id));
/* TBD */
break;
@@ -629,7 +580,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
}
- return;
+ acpi_bus_get_device(handle, &device);
+ if (device) {
+ driver = device->driver;
+ if (driver && driver->ops.notify &&
+ (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
+ driver->ops.notify(device, type);
+ }
}
/* --------------------------------------------------------------------------
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 8bd2c2a6884..a8a5c29958c 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -140,46 +140,6 @@ struct device *acpi_get_physical_device(acpi_handle handle)
EXPORT_SYMBOL(acpi_get_physical_device);
-/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge
- * This should work in general, but did not on a Lenovo T61 for the
- * graphics card. But this must be fixed when the PCI device is
- * bound and the kernel device struct is attached to the acpi device
- * Note: A success call will increase reference count by one
- * Do call put_device(dev) on the returned device then
- */
-struct device *acpi_get_physical_pci_device(acpi_handle handle)
-{
- struct device *dev;
- long long device_id;
- acpi_status status;
-
- status =
- acpi_evaluate_integer(handle, "_ADR", NULL, &device_id);
-
- if (ACPI_FAILURE(status))
- return NULL;
-
- /* We need to attempt to determine whether the _ADR refers to a
- PCI device or not. There's no terribly good way to do this,
- so the best we can hope for is to assume that there'll never
- be a device in the host bridge */
- if (device_id >= 0x10000) {
- /* It looks like a PCI device. Does it exist? */
- dev = acpi_get_physical_device(handle);
- } else {
- /* It doesn't look like a PCI device. Does its parent
- exist? */
- acpi_handle phandle;
- if (acpi_get_parent(handle, &phandle))
- return NULL;
- dev = acpi_get_physical_device(phandle);
- }
- if (!dev)
- return NULL;
- return dev;
-}
-EXPORT_SYMBOL(acpi_get_physical_pci_device);
-
static int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index d916bea729f..5691f165a95 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -79,6 +79,7 @@ static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
+static struct workqueue_struct *kacpi_hotplug_wq;
struct acpi_res_list {
resource_size_t start;
@@ -188,12 +189,39 @@ acpi_status __init acpi_os_initialize(void)
return AE_OK;
}
+static void bind_to_cpu0(struct work_struct *work)
+{
+ set_cpus_allowed(current, cpumask_of_cpu(0));
+ kfree(work);
+}
+
+static void bind_workqueue(struct workqueue_struct *wq)
+{
+ struct work_struct *work;
+
+ work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
+ INIT_WORK(work, bind_to_cpu0);
+ queue_work(wq, work);
+}
+
acpi_status acpi_os_initialize1(void)
{
+ /*
+ * On some machines, a software-initiated SMI causes corruption unless
+ * the SMI runs on CPU 0. An SMI can be initiated by any AML, but
+ * typically it's done in GPE-related methods that are run via
+ * workqueues, so we can avoid the known corruption cases by binding
+ * the workqueues to CPU 0.
+ */
kacpid_wq = create_singlethread_workqueue("kacpid");
+ bind_workqueue(kacpid_wq);
kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
+ bind_workqueue(kacpi_notify_wq);
+ kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
+ bind_workqueue(kacpi_hotplug_wq);
BUG_ON(!kacpid_wq);
BUG_ON(!kacpi_notify_wq);
+ BUG_ON(!kacpi_hotplug_wq);
return AE_OK;
}
@@ -206,6 +234,7 @@ acpi_status acpi_os_terminate(void)
destroy_workqueue(kacpid_wq);
destroy_workqueue(kacpi_notify_wq);
+ destroy_workqueue(kacpi_hotplug_wq);
return AE_OK;
}
@@ -716,6 +745,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
struct workqueue_struct *queue;
+ work_func_t func;
int ret;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
@@ -740,15 +770,17 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
dpc->function = function;
dpc->context = context;
- if (!hp) {
- INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- queue = (type == OSL_NOTIFY_HANDLER) ?
- kacpi_notify_wq : kacpid_wq;
- ret = queue_work(queue, &dpc->work);
- } else {
- INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred);
- ret = schedule_work(&dpc->work);
- }
+ /*
+ * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq
+ * because the hotplug code may call driver .remove() functions,
+ * which invoke flush_scheduled_work/acpi_os_wait_events_complete
+ * to flush these workqueues.
+ */
+ queue = hp ? kacpi_hotplug_wq :
+ (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq);
+ func = hp ? acpi_os_execute_hp_deferred : acpi_os_execute_deferred;
+ INIT_WORK(&dpc->work, func);
+ ret = queue_work(queue, &dpc->work);
if (!ret) {
printk(KERN_ERR PREFIX
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index bc46de3d967..a5a77b78a72 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -24,12 +24,7 @@
*/
#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
@@ -38,310 +33,76 @@
#define _COMPONENT ACPI_PCI_COMPONENT
ACPI_MODULE_NAME("pci_bind");
-struct acpi_pci_data {
- struct acpi_pci_id id;
- struct pci_bus *bus;
- struct pci_dev *dev;
-};
-
-static int acpi_pci_unbind(struct acpi_device *device);
-
-static void acpi_pci_data_handler(acpi_handle handle, u32 function,
- void *context)
-{
-
- /* TBD: Anything we need to do here? */
-
- return;
-}
-
-/**
- * acpi_get_pci_id
- * ------------------
- * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem)
- * to resolve PCI information for ACPI-PCI devices defined in the namespace.
- * This typically occurs when resolving PCI operation region information.
- */
-acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
+static int acpi_pci_unbind(struct acpi_device *device)
{
- int result = 0;
- acpi_status status = AE_OK;
- struct acpi_device *device = NULL;
- struct acpi_pci_data *data = NULL;
-
-
- if (!id)
- return AE_BAD_PARAMETER;
-
- result = acpi_bus_get_device(handle, &device);
- if (result) {
- printk(KERN_ERR PREFIX
- "Invalid ACPI Bus context for device %s\n",
- acpi_device_bid(device));
- return AE_NOT_EXIST;
- }
-
- status = acpi_get_data(handle, acpi_pci_data_handler, (void **)&data);
- if (ACPI_FAILURE(status) || !data) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Invalid ACPI-PCI context for device %s",
- acpi_device_bid(device)));
- return status;
- }
+ struct pci_dev *dev;
- *id = data->id;
+ dev = acpi_get_pci_dev(device->handle);
+ if (!dev || !dev->subordinate)
+ goto out;
- /*
- id->segment = data->id.segment;
- id->bus = data->id.bus;
- id->device = data->id.device;
- id->function = data->id.function;
- */
+ acpi_pci_irq_del_prt(dev->subordinate);
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Device %s has PCI address %04x:%02x:%02x.%d\n",
- acpi_device_bid(device), id->segment, id->bus,
- id->device, id->function));
+ device->ops.bind = NULL;
+ device->ops.unbind = NULL;
- return AE_OK;
+out:
+ pci_dev_put(dev);
+ return 0;
}
-EXPORT_SYMBOL(acpi_get_pci_id);
-
-int acpi_pci_bind(struct acpi_device *device)
+static int acpi_pci_bind(struct acpi_device *device)
{
- int result = 0;
acpi_status status;
- struct acpi_pci_data *data;
- struct acpi_pci_data *pdata;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
acpi_handle handle;
+ struct pci_bus *bus;
+ struct pci_dev *dev;
- if (!device || !device->parent)
- return -EINVAL;
-
- data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
- if (ACPI_FAILURE(status)) {
- kfree(data);
- return -ENODEV;
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n",
- (char *)buffer.pointer));
-
- /*
- * Segment & Bus
- * -------------
- * These are obtained via the parent device's ACPI-PCI context.
- */
- status = acpi_get_data(device->parent->handle, acpi_pci_data_handler,
- (void **)&pdata);
- if (ACPI_FAILURE(status) || !pdata || !pdata->bus) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Invalid ACPI-PCI context for parent device %s",
- acpi_device_bid(device->parent)));
- result = -ENODEV;
- goto end;
- }
- data->id.segment = pdata->id.segment;
- data->id.bus = pdata->bus->number;
-
- /*
- * Device & Function
- * -----------------
- * These are simply obtained from the device's _ADR method. Note
- * that a value of zero is valid.
- */
- data->id.device = device->pnp.bus_address >> 16;
- data->id.function = device->pnp.bus_address & 0xFFFF;
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %04x:%02x:%02x.%d\n",
- data->id.segment, data->id.bus, data->id.device,
- data->id.function));
-
- /*
- * TBD: Support slot devices (e.g. function=0xFFFF).
- */
-
- /*
- * Locate PCI Device
- * -----------------
- * Locate matching device in PCI namespace. If it doesn't exist
- * this typically means that the device isn't currently inserted
- * (e.g. docking station, port replicator, etc.).
- */
- data->dev = pci_get_slot(pdata->bus,
- PCI_DEVFN(data->id.device, data->id.function));
- if (!data->dev) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Device %04x:%02x:%02x.%d not present in PCI namespace\n",
- data->id.segment, data->id.bus,
- data->id.device, data->id.function));
- result = -ENODEV;
- goto end;
- }
- if (!data->dev->bus) {
- printk(KERN_ERR PREFIX
- "Device %04x:%02x:%02x.%d has invalid 'bus' field\n",
- data->id.segment, data->id.bus,
- data->id.device, data->id.function);
- result = -ENODEV;
- goto end;
- }
+ dev = acpi_get_pci_dev(device->handle);
+ if (!dev)
+ return 0;
/*
- * PCI Bridge?
- * -----------
- * If so, set the 'bus' field and install the 'bind' function to
- * facilitate callbacks for all of its children.
+ * Install the 'bind' function to facilitate callbacks for
+ * children of the P2P bridge.
*/
- if (data->dev->subordinate) {
+ if (dev->subordinate) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device %04x:%02x:%02x.%d is a PCI bridge\n",
- data->id.segment, data->id.bus,
- data->id.device, data->id.function));
- data->bus = data->dev->subordinate;
+ pci_domain_nr(dev->bus), dev->bus->number,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
device->ops.bind = acpi_pci_bind;
device->ops.unbind = acpi_pci_unbind;
}
/*
- * Attach ACPI-PCI Context
- * -----------------------
- * Thus binding the ACPI and PCI devices.
- */
- status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Unable to attach ACPI-PCI context to device %s",
- acpi_device_bid(device)));
- result = -ENODEV;
- goto end;
- }
-
- /*
- * PCI Routing Table
- * -----------------
- * Evaluate and parse _PRT, if exists. This code is independent of
- * PCI bridges (above) to allow parsing of _PRT objects within the
- * scope of non-bridge devices. Note that _PRTs within the scope of
- * a PCI bridge assume the bridge's subordinate bus number.
+ * Evaluate and parse _PRT, if exists. This code allows parsing of
+ * _PRT objects within the scope of non-bridge devices. Note that
+ * _PRTs within the scope of a PCI bridge assume the bridge's
+ * subordinate bus number.
*
* TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
*/
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
- if (ACPI_SUCCESS(status)) {
- if (data->bus) /* PCI-PCI bridge */
- acpi_pci_irq_add_prt(device->handle, data->id.segment,
- data->bus->number);
- else /* non-bridge PCI device */
- acpi_pci_irq_add_prt(device->handle, data->id.segment,
- data->id.bus);
- }
-
- end:
- kfree(buffer.pointer);
- if (result) {
- pci_dev_put(data->dev);
- kfree(data);
- }
- return result;
-}
-
-static int acpi_pci_unbind(struct acpi_device *device)
-{
- int result = 0;
- acpi_status status;
- struct acpi_pci_data *data;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-
-
- if (!device || !device->parent)
- return -EINVAL;
-
- status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ goto out;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n",
- (char *) buffer.pointer));
- kfree(buffer.pointer);
+ if (dev->subordinate)
+ bus = dev->subordinate;
+ else
+ bus = dev->bus;
- status =
- acpi_get_data(device->handle, acpi_pci_data_handler,
- (void **)&data);
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto end;
- }
+ acpi_pci_irq_add_prt(device->handle, bus);
- status = acpi_detach_data(device->handle, acpi_pci_data_handler);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Unable to detach data from device %s",
- acpi_device_bid(device)));
- result = -ENODEV;
- goto end;
- }
- if (data->dev->subordinate) {
- acpi_pci_irq_del_prt(data->id.segment, data->bus->number);
- }
- pci_dev_put(data->dev);
- kfree(data);
-
- end:
- return result;
+out:
+ pci_dev_put(dev);
+ return 0;
}
-int
-acpi_pci_bind_root(struct acpi_device *device,
- struct acpi_pci_id *id, struct pci_bus *bus)
+int acpi_pci_bind_root(struct acpi_device *device)
{
- int result = 0;
- acpi_status status;
- struct acpi_pci_data *data = NULL;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-
- if (!device || !id || !bus) {
- return -EINVAL;
- }
-
- data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- data->id = *id;
- data->bus = bus;
device->ops.bind = acpi_pci_bind;
device->ops.unbind = acpi_pci_unbind;
- status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
- if (ACPI_FAILURE(status)) {
- kfree (data);
- return -ENODEV;
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI root bridge [%s] to "
- "%04x:%02x\n", (char *)buffer.pointer,
- id->segment, id->bus));
-
- status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Unable to attach ACPI-PCI context to device %s",
- (char *)buffer.pointer));
- result = -ENODEV;
- goto end;
- }
-
- end:
- kfree(buffer.pointer);
- if (result != 0)
- kfree(data);
-
- return result;
+ return 0;
}
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 2faa9e2ac89..b794eb88ab9 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -182,7 +182,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
}
}
-static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
+static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
struct acpi_pci_routing_table *prt)
{
struct acpi_prt_entry *entry;
@@ -196,8 +196,8 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
* 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert
* it here.
*/
- entry->id.segment = segment;
- entry->id.bus = bus;
+ entry->id.segment = pci_domain_nr(bus);
+ entry->id.bus = bus->number;
entry->id.device = (prt->address >> 16) & 0xFFFF;
entry->pin = prt->pin + 1;
@@ -242,7 +242,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
return 0;
}
-int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
+int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -271,7 +271,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
entry = buffer.pointer;
while (entry && (entry->length > 0)) {
- acpi_pci_irq_add_entry(handle, segment, bus, entry);
+ acpi_pci_irq_add_entry(handle, bus, entry);
entry = (struct acpi_pci_routing_table *)
((unsigned long)entry + entry->length);
}
@@ -280,16 +280,17 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
return 0;
}
-void acpi_pci_irq_del_prt(int segment, int bus)
+void acpi_pci_irq_del_prt(struct pci_bus *bus)
{
struct acpi_prt_entry *entry, *tmp;
printk(KERN_DEBUG
"ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
- segment, bus);
+ pci_domain_nr(bus), bus->number);
spin_lock(&acpi_prt_lock);
list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
- if (segment == entry->id.segment && bus == entry->id.bus) {
+ if (pci_domain_nr(bus) == entry->id.segment
+ && bus->number == entry->id.bus) {
list_del(&entry->list);
kfree(entry);
}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 196f97d0095..55b5b90c2a4 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -63,9 +63,10 @@ static struct acpi_driver acpi_pci_root_driver = {
struct acpi_pci_root {
struct list_head node;
- struct acpi_device * device;
- struct acpi_pci_id id;
+ struct acpi_device *device;
struct pci_bus *bus;
+ u16 segment;
+ u8 bus_nr;
u32 osc_support_set; /* _OSC state of support bits */
u32 osc_control_set; /* _OSC state of control bits */
@@ -82,7 +83,7 @@ static DEFINE_MUTEX(osc_lock);
int acpi_pci_register_driver(struct acpi_pci_driver *driver)
{
int n = 0;
- struct list_head *entry;
+ struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr)
@@ -92,9 +93,7 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver)
if (!driver->add)
return 0;
- list_for_each(entry, &acpi_pci_roots) {
- struct acpi_pci_root *root;
- root = list_entry(entry, struct acpi_pci_root, node);
+ list_for_each_entry(root, &acpi_pci_roots, node) {
driver->add(root->device->handle);
n++;
}
@@ -106,7 +105,7 @@ EXPORT_SYMBOL(acpi_pci_register_driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
{
- struct list_head *entry;
+ struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr) {
@@ -120,28 +119,48 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
if (!driver->remove)
return;
- list_for_each(entry, &acpi_pci_roots) {
- struct acpi_pci_root *root;
- root = list_entry(entry, struct acpi_pci_root, node);
+ list_for_each_entry(root, &acpi_pci_roots, node)
driver->remove(root->device->handle);
- }
}
EXPORT_SYMBOL(acpi_pci_unregister_driver);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
{
- struct acpi_pci_root *tmp;
+ struct acpi_pci_root *root;
- list_for_each_entry(tmp, &acpi_pci_roots, node) {
- if ((tmp->id.segment == (u16) seg) && (tmp->id.bus == (u16) bus))
- return tmp->device->handle;
- }
+ list_for_each_entry(root, &acpi_pci_roots, node)
+ if ((root->segment == (u16) seg) && (root->bus_nr == (u16) bus))
+ return root->device->handle;
return NULL;
}
EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
+/**
+ * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge
+ * @handle - the ACPI CA node in question.
+ *
+ * Note: we could make this API take a struct acpi_device * instead, but
+ * for now, it's more convenient to operate on an acpi_handle.
+ */
+int acpi_is_root_bridge(acpi_handle handle)
+{
+ int ret;
+ struct acpi_device *device;
+
+ ret = acpi_bus_get_device(handle, &device);
+ if (ret)
+ return 0;
+
+ ret = acpi_match_device_ids(device, root_device_ids);
+ if (ret)
+ return 0;
+ else
+ return 1;
+}
+EXPORT_SYMBOL_GPL(acpi_is_root_bridge);
+
static acpi_status
get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
{
@@ -161,19 +180,22 @@ get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
return AE_OK;
}
-static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
+static acpi_status try_get_root_bridge_busnr(acpi_handle handle,
+ unsigned long long *bus)
{
acpi_status status;
+ int busnum;
- *busnum = -1;
+ busnum = -1;
status =
acpi_walk_resources(handle, METHOD_NAME__CRS,
- get_root_bridge_busnr_callback, busnum);
+ get_root_bridge_busnr_callback, &busnum);
if (ACPI_FAILURE(status))
return status;
/* Check if we really get a bus number from _CRS */
- if (*busnum == -1)
+ if (busnum == -1)
return AE_ERROR;
+ *bus = busnum;
return AE_OK;
}
@@ -298,6 +320,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
{
struct acpi_pci_root *root;
+
list_for_each_entry(root, &acpi_pci_roots, node) {
if (root->device->handle == handle)
return root;
@@ -305,6 +328,87 @@ static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
return NULL;
}
+struct acpi_handle_node {
+ struct list_head node;
+ acpi_handle handle;
+};
+
+/**
+ * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev
+ * @handle: the handle in question
+ *
+ * Given an ACPI CA handle, the desired PCI device is located in the
+ * list of PCI devices.
+ *
+ * If the device is found, its reference count is increased and this
+ * function returns a pointer to its data structure. The caller must
+ * decrement the reference count by calling pci_dev_put().
+ * If no device is found, %NULL is returned.
+ */
+struct pci_dev *acpi_get_pci_dev(acpi_handle handle)
+{
+ int dev, fn;
+ unsigned long long adr;
+ acpi_status status;
+ acpi_handle phandle;
+ struct pci_bus *pbus;
+ struct pci_dev *pdev = NULL;
+ struct acpi_handle_node *node, *tmp;
+ struct acpi_pci_root *root;
+ LIST_HEAD(device_list);
+
+ /*
+ * Walk up the ACPI CA namespace until we reach a PCI root bridge.
+ */
+ phandle = handle;
+ while (!acpi_is_root_bridge(phandle)) {
+ node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL);
+ if (!node)
+ goto out;
+
+ INIT_LIST_HEAD(&node->node);
+ node->handle = phandle;
+ list_add(&node->node, &device_list);
+
+ status = acpi_get_parent(phandle, &phandle);
+ if (ACPI_FAILURE(status))
+ goto out;
+ }
+
+ root = acpi_pci_find_root(phandle);
+ if (!root)
+ goto out;
+
+ pbus = root->bus;
+
+ /*
+ * Now, walk back down the PCI device tree until we return to our
+ * original handle. Assumes that everything between the PCI root
+ * bridge and the device we're looking for must be a P2P bridge.
+ */
+ list_for_each_entry(node, &device_list, node) {
+ acpi_handle hnd = node->handle;
+ status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr);
+ if (ACPI_FAILURE(status))
+ goto out;
+ dev = (adr >> 16) & 0xffff;
+ fn = adr & 0xffff;
+
+ pdev = pci_get_slot(pbus, PCI_DEVFN(dev, fn));
+ if (!pdev || hnd == handle)
+ break;
+
+ pbus = pdev->subordinate;
+ pci_dev_put(pdev);
+ }
+out:
+ list_for_each_entry_safe(node, tmp, &device_list, node)
+ kfree(node);
+
+ return pdev;
+}
+EXPORT_SYMBOL_GPL(acpi_get_pci_dev);
+
/**
* acpi_pci_osc_control_set - commit requested control to Firmware
* @handle: acpi_handle for the target ACPI object
@@ -363,31 +467,46 @@ EXPORT_SYMBOL(acpi_pci_osc_control_set);
static int __devinit acpi_pci_root_add(struct acpi_device *device)
{
- int result = 0;
- struct acpi_pci_root *root = NULL;
- struct acpi_pci_root *tmp;
- acpi_status status = AE_OK;
- unsigned long long value = 0;
- acpi_handle handle = NULL;
+ unsigned long long segment, bus;
+ acpi_status status;
+ int result;
+ struct acpi_pci_root *root;
+ acpi_handle handle;
struct acpi_device *child;
u32 flags, base_flags;
+ segment = 0;
+ status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
+ &segment);
+ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+ printk(KERN_ERR PREFIX "can't evaluate _SEG\n");
+ return -ENODEV;
+ }
- if (!device)
- return -EINVAL;
+ /* Check _CRS first, then _BBN. If no _BBN, default to zero. */
+ bus = 0;
+ status = try_get_root_bridge_busnr(device->handle, &bus);
+ if (ACPI_FAILURE(status)) {
+ status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL, &bus);
+ if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+ printk(KERN_ERR PREFIX
+ "no bus number in _CRS and can't evaluate _BBN\n");
+ return -ENODEV;
+ }
+ }
root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
if (!root)
return -ENOMEM;
- INIT_LIST_HEAD(&root->node);
+ INIT_LIST_HEAD(&root->node);
root->device = device;
+ root->segment = segment & 0xFFFF;
+ root->bus_nr = bus & 0xFF;
strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
device->driver_data = root;
- device->ops.bind = acpi_pci_bind;
-
/*
* All supported architectures that use ACPI have support for
* PCI domains, so we indicate this in _OSC support capabilities.
@@ -395,79 +514,6 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
acpi_pci_osc_support(root, flags);
- /*
- * Segment
- * -------
- * Obtained via _SEG, if exists, otherwise assumed to be zero (0).
- */
- status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
- &value);
- switch (status) {
- case AE_OK:
- root->id.segment = (u16) value;
- break;
- case AE_NOT_FOUND:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Assuming segment 0 (no _SEG)\n"));
- root->id.segment = 0;
- break;
- default:
- ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SEG"));
- result = -ENODEV;
- goto end;
- }
-
- /*
- * Bus
- * ---
- * Obtained via _BBN, if exists, otherwise assumed to be zero (0).
- */
- status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL,
- &value);
- switch (status) {
- case AE_OK:
- root->id.bus = (u16) value;
- break;
- case AE_NOT_FOUND:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Assuming bus 0 (no _BBN)\n"));
- root->id.bus = 0;
- break;
- default:
- ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BBN"));
- result = -ENODEV;
- goto end;
- }
-
- /* Some systems have wrong _BBN */
- list_for_each_entry(tmp, &acpi_pci_roots, node) {
- if ((tmp->id.segment == root->id.segment)
- && (tmp->id.bus == root->id.bus)) {
- int bus = 0;
- acpi_status status;
-
- printk(KERN_ERR PREFIX
- "Wrong _BBN value, reboot"
- " and use option 'pci=noacpi'\n");
-
- status = try_get_root_bridge_busnr(device->handle, &bus);
- if (ACPI_FAILURE(status))
- break;
- if (bus != root->id.bus) {
- printk(KERN_INFO PREFIX
- "PCI _CRS %d overrides _BBN 0\n", bus);
- root->id.bus = bus;
- }
- break;
- }
- }
- /*
- * Device & Function
- * -----------------
- * Obtained from _ADR (which has already been evaluated for us).
- */
- root->id.device = device->pnp.bus_address >> 16;
- root->id.function = device->pnp.bus_address & 0xFFFF;
-
/*
* TBD: Need PCI interface for enumeration/configuration of roots.
*/
@@ -477,7 +523,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
acpi_device_name(device), acpi_device_bid(device),
- root->id.segment, root->id.bus);
+ root->segment, root->bus_nr);
/*
* Scan the Root Bridge
@@ -486,11 +532,11 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
* PCI namespace does not get created until this call is made (and
* thus the root bridge's pci_dev does not exist).
*/
- root->bus = pci_acpi_scan_root(device, root->id.segment, root->id.bus);
+ root->bus = pci_acpi_scan_root(device, segment, bus);
if (!root->bus) {
printk(KERN_ERR PREFIX
"Bus %04x:%02x not present in PCI namespace\n",
- root->id.segment, root->id.bus);
+ root->segment, root->bus_nr);
result = -ENODEV;
goto end;
}
@@ -500,7 +546,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
* -----------------------
* Thus binding the ACPI and PCI devices.
*/
- result = acpi_pci_bind_root(device, &root->id, root->bus);
+ result = acpi_pci_bind_root(device);
if (result)
goto end;
@@ -511,8 +557,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
*/
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
if (ACPI_SUCCESS(status))
- result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
- root->id.bus);
+ result = acpi_pci_irq_add_prt(device->handle, root->bus);
/*
* Scan and bind all _ADR-Based Devices
@@ -531,42 +576,28 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
if (flags != base_flags)
acpi_pci_osc_support(root, flags);
- end:
- if (result) {
- if (!list_empty(&root->node))
- list_del(&root->node);
- kfree(root);
- }
+ return 0;
+end:
+ if (!list_empty(&root->node))
+ list_del(&root->node);
+ kfree(root);
return result;
}
static int acpi_pci_root_start(struct acpi_device *device)
{
- struct acpi_pci_root *root;
+ struct acpi_pci_root *root = acpi_driver_data(device);
-
- list_for_each_entry(root, &acpi_pci_roots, node) {
- if (root->device == device) {
- pci_bus_add_devices(root->bus);
- return 0;
- }
- }
- return -ENODEV;
+ pci_bus_add_devices(root->bus);
+ return 0;
}
static int acpi_pci_root_remove(struct acpi_device *device, int type)
{
- struct acpi_pci_root *root = NULL;
-
-
- if (!device || !acpi_driver_data(device))
- return -EINVAL;
-
- root = acpi_driver_data(device);
+ struct acpi_pci_root *root = acpi_driver_data(device);
kfree(root);
-
return 0;
}
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 56665a63bf1..d74365d4a6e 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -194,7 +194,7 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
{
- int result = 0, state;
+ int result = 0;
int found = 0;
acpi_status status = AE_OK;
struct acpi_power_resource *resource = NULL;
@@ -236,18 +236,6 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
if (ACPI_FAILURE(status))
return -ENODEV;
- if (!acpi_power_nocheck) {
- /*
- * If acpi_power_nocheck is set, it is unnecessary to check
- * the power state after power transition.
- */
- result = acpi_power_get_state(resource->device->handle,
- &state);
- if (result)
- return result;
- if (state != ACPI_POWER_RESOURCE_STATE_ON)
- return -ENOEXEC;
- }
/* Update the power resource's _device_ power state */
resource->device->power.state = ACPI_STATE_D0;
@@ -258,7 +246,7 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
{
- int result = 0, state;
+ int result = 0;
acpi_status status = AE_OK;
struct acpi_power_resource *resource = NULL;
struct list_head *node, *next;
@@ -293,18 +281,6 @@ static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
if (ACPI_FAILURE(status))
return -ENODEV;
- if (!acpi_power_nocheck) {
- /*
- * If acpi_power_nocheck is set, it is unnecessary to check
- * the power state after power transition.
- */
- result = acpi_power_get_state(handle, &state);
- if (result)
- return result;
- if (state != ACPI_POWER_RESOURCE_STATE_OFF)
- return -ENOEXEC;
- }
-
/* Update the power resource's _device_ power state */
resource->device->power.state = ACPI_STATE_D3;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 23f0fb84f1c..2cc4b303387 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -89,7 +89,7 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr);
static const struct acpi_device_id processor_device_ids[] = {
{ACPI_PROCESSOR_OBJECT_HID, 0},
- {ACPI_PROCESSOR_HID, 0},
+ {"ACPI0007", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, processor_device_ids);
@@ -596,7 +596,21 @@ static int acpi_processor_get_info(struct acpi_device *device)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No bus mastering arbitration control\n"));
- if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) {
+ if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
+ /* Declared with "Processor" statement; match ProcessorID */
+ status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Evaluating processor object\n");
+ return -ENODEV;
+ }
+
+ /*
+ * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+ * >>> 'acpi_get_processor_id(acpi_id, &id)' in
+ * arch/xxx/acpi.c
+ */
+ pr->acpi_id = object.processor.proc_id;
+ } else {
/*
* Declared with "Device" statement; match _UID.
* Note that we don't handle string _UIDs yet.
@@ -611,20 +625,6 @@ static int acpi_processor_get_info(struct acpi_device *device)
}
device_declaration = 1;
pr->acpi_id = value;
- } else {
- /* Declared with "Processor" statement; match ProcessorID */
- status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Evaluating processor object\n");
- return -ENODEV;
- }
-
- /*
- * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
- * >>> 'acpi_get_processor_id(acpi_id, &id)' in
- * arch/xxx/acpi.c
- */
- pr->acpi_id = object.processor.proc_id;
}
cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id);
@@ -649,7 +649,16 @@ static int acpi_processor_get_info(struct acpi_device *device)
return -ENODEV;
}
}
-
+ /*
+ * On some boxes several processors use the same processor bus id.
+ * But they are located in different scope. For example:
+ * \_SB.SCK0.CPU0
+ * \_SB.SCK1.CPU0
+ * Rename the processor device bus id. And the new bus id will be
+ * generated as the following format:
+ * CPU+CPU ID.
+ */
+ sprintf(acpi_device_bid(device), "CPU%X", pr->id);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
pr->acpi_id));
@@ -731,6 +740,8 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
/* _PDC call should be done before doing anything else (if reqd.). */
arch_acpi_processor_init_pdc(pr);
acpi_processor_set_pdc(pr);
+ arch_acpi_processor_cleanup_pdc(pr);
+
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr);
#endif
@@ -1140,6 +1151,9 @@ static int __init acpi_processor_init(void)
{
int result = 0;
+ if (acpi_disabled)
+ return 0;
+
memset(&errata, 0, sizeof(errata));
#ifdef CONFIG_SMP
@@ -1186,6 +1200,9 @@ out_proc:
static void __exit acpi_processor_exit(void)
{
+ if (acpi_disabled)
+ return;
+
acpi_processor_ppc_exit();
acpi_thermal_cpufreq_exit();
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 10a2d913635..66393d5c4c7 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -139,7 +139,7 @@ static void acpi_safe_halt(void)
* are affected too. We pick the most conservative approach: we assume
* that the local APIC stops in both C2 and C3.
*/
-static void acpi_timer_check_state(int state, struct acpi_processor *pr,
+static void lapic_timer_check_state(int state, struct acpi_processor *pr,
struct acpi_processor_cx *cx)
{
struct acpi_processor_power *pwr = &pr->power;
@@ -162,8 +162,9 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
pr->power.timer_broadcast_on_state = state;
}
-static void acpi_propagate_timer_broadcast(struct acpi_processor *pr)
+static void lapic_timer_propagate_broadcast(void *arg)
{
+ struct acpi_processor *pr = (struct acpi_processor *) arg;
unsigned long reason;
reason = pr->power.timer_broadcast_on_state < INT_MAX ?
@@ -173,7 +174,7 @@ static void acpi_propagate_timer_broadcast(struct acpi_processor *pr)
}
/* Power(C) State timer broadcast control */
-static void acpi_state_timer_broadcast(struct acpi_processor *pr,
+static void lapic_timer_state_broadcast(struct acpi_processor *pr,
struct acpi_processor_cx *cx,
int broadcast)
{
@@ -190,10 +191,10 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
#else
-static void acpi_timer_check_state(int state, struct acpi_processor *pr,
+static void lapic_timer_check_state(int state, struct acpi_processor *pr,
struct acpi_processor_cx *cstate) { }
-static void acpi_propagate_timer_broadcast(struct acpi_processor *pr) { }
-static void acpi_state_timer_broadcast(struct acpi_processor *pr,
+static void lapic_timer_propagate_broadcast(struct acpi_processor *pr) { }
+static void lapic_timer_state_broadcast(struct acpi_processor *pr,
struct acpi_processor_cx *cx,
int broadcast)
{
@@ -515,7 +516,8 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
struct acpi_processor_cx *cx)
{
- static int bm_check_flag;
+ static int bm_check_flag = -1;
+ static int bm_control_flag = -1;
if (!cx->address)
@@ -545,12 +547,14 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
}
/* All the logic here assumes flags.bm_check is same across all CPUs */
- if (!bm_check_flag) {
+ if (bm_check_flag == -1) {
/* Determine whether bm_check is needed based on CPU */
acpi_processor_power_init_bm_check(&(pr->flags), pr->id);
bm_check_flag = pr->flags.bm_check;
+ bm_control_flag = pr->flags.bm_control;
} else {
pr->flags.bm_check = bm_check_flag;
+ pr->flags.bm_control = bm_control_flag;
}
if (pr->flags.bm_check) {
@@ -614,29 +618,26 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
switch (cx->type) {
case ACPI_STATE_C1:
cx->valid = 1;
- acpi_timer_check_state(i, pr, cx);
break;
case ACPI_STATE_C2:
acpi_processor_power_verify_c2(cx);
- if (cx->valid)
- acpi_timer_check_state(i, pr, cx);
break;
case ACPI_STATE_C3:
acpi_processor_power_verify_c3(pr, cx);
- if (cx->valid)
- acpi_timer_check_state(i, pr, cx);
break;
}
- if (cx->valid)
- tsc_check_state(cx->type);
+ if (!cx->valid)
+ continue;
- if (cx->valid)
- working++;
+ lapic_timer_check_state(i, pr, cx);
+ tsc_check_state(cx->type);
+ working++;
}
- acpi_propagate_timer_broadcast(pr);
+ smp_call_function_single(pr->id, lapic_timer_propagate_broadcast,
+ pr, 1);
return (working);
}
@@ -839,7 +840,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
return 0;
}
- acpi_state_timer_broadcast(pr, cx, 1);
+ lapic_timer_state_broadcast(pr, cx, 1);
kt1 = ktime_get_real();
acpi_idle_do_entry(cx);
kt2 = ktime_get_real();
@@ -847,7 +848,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
local_irq_enable();
cx->usage++;
- acpi_state_timer_broadcast(pr, cx, 0);
+ lapic_timer_state_broadcast(pr, cx, 0);
return idle_time;
}
@@ -892,7 +893,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
* Must be done before busmaster disable as we might need to
* access HPET !
*/
- acpi_state_timer_broadcast(pr, cx, 1);
+ lapic_timer_state_broadcast(pr, cx, 1);
if (cx->type == ACPI_STATE_C3)
ACPI_FLUSH_CPU_CACHE();
@@ -914,7 +915,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
cx->usage++;
- acpi_state_timer_broadcast(pr, cx, 0);
+ lapic_timer_state_broadcast(pr, cx, 0);
cx->time += sleep_ticks;
return idle_time;
}
@@ -981,7 +982,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
* Must be done before busmaster disable as we might need to
* access HPET !
*/
- acpi_state_timer_broadcast(pr, cx, 1);
+ lapic_timer_state_broadcast(pr, cx, 1);
kt1 = ktime_get_real();
/*
@@ -1026,7 +1027,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
cx->usage++;
- acpi_state_timer_broadcast(pr, cx, 0);
+ lapic_timer_state_broadcast(pr, cx, 0);
cx->time += sleep_ticks;
return idle_time;
}
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 39838c66603..31adda1099e 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -66,7 +66,7 @@ static int acpi_processor_apply_limit(struct acpi_processor *pr)
if (pr->limit.thermal.tx > tx)
tx = pr->limit.thermal.tx;
- result = acpi_processor_set_throttling(pr, tx);
+ result = acpi_processor_set_throttling(pr, tx, false);
if (result)
goto end;
}
@@ -421,12 +421,12 @@ processor_set_cur_state(struct thermal_cooling_device *cdev,
if (state <= max_pstate) {
if (pr->flags.throttling && pr->throttling.state)
- result = acpi_processor_set_throttling(pr, 0);
+ result = acpi_processor_set_throttling(pr, 0, false);
cpufreq_set_cur_state(pr->id, state);
} else {
cpufreq_set_cur_state(pr->id, max_pstate);
result = acpi_processor_set_throttling(pr,
- state - max_pstate);
+ state - max_pstate, false);
}
return result;
}
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 227543789ba..ae39797aab5 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -62,7 +62,8 @@ struct throttling_tstate {
#define THROTTLING_POSTCHANGE (2)
static int acpi_processor_get_throttling(struct acpi_processor *pr);
-int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
+int acpi_processor_set_throttling(struct acpi_processor *pr,
+ int state, bool force);
static int acpi_processor_update_tsd_coord(void)
{
@@ -361,7 +362,7 @@ int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
*/
target_state = throttling_limit;
}
- return acpi_processor_set_throttling(pr, target_state);
+ return acpi_processor_set_throttling(pr, target_state, false);
}
/*
@@ -839,10 +840,10 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
if (ret >= 0) {
state = acpi_get_throttling_state(pr, value);
if (state == -1) {
- ACPI_WARNING((AE_INFO,
- "Invalid throttling state, reset"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Invalid throttling state, reset\n"));
state = 0;
- ret = acpi_processor_set_throttling(pr, state);
+ ret = acpi_processor_set_throttling(pr, state, true);
if (ret)
return ret;
}
@@ -915,7 +916,7 @@ static int acpi_processor_get_fadt_info(struct acpi_processor *pr)
}
static int acpi_processor_set_throttling_fadt(struct acpi_processor *pr,
- int state)
+ int state, bool force)
{
u32 value = 0;
u32 duty_mask = 0;
@@ -930,7 +931,7 @@ static int acpi_processor_set_throttling_fadt(struct acpi_processor *pr,
if (!pr->flags.throttling)
return -ENODEV;
- if (state == pr->throttling.state)
+ if (!force && (state == pr->throttling.state))
return 0;
if (state < pr->throttling_platform_limit)
@@ -988,7 +989,7 @@ static int acpi_processor_set_throttling_fadt(struct acpi_processor *pr,
}
static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
- int state)
+ int state, bool force)
{
int ret;
acpi_integer value;
@@ -1002,7 +1003,7 @@ static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
if (!pr->flags.throttling)
return -ENODEV;
- if (state == pr->throttling.state)
+ if (!force && (state == pr->throttling.state))
return 0;
if (state < pr->throttling_platform_limit)
@@ -1018,7 +1019,8 @@ static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
return 0;
}
-int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
+int acpi_processor_set_throttling(struct acpi_processor *pr,
+ int state, bool force)
{
cpumask_var_t saved_mask;
int ret = 0;
@@ -1070,7 +1072,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
/* FIXME: use work_on_cpu() */
set_cpus_allowed_ptr(current, cpumask_of(pr->id));
ret = p_throttling->acpi_processor_set_throttling(pr,
- t_state.target_state);
+ t_state.target_state, force);
} else {
/*
* When the T-state coordination is SW_ALL or HW_ALL,
@@ -1103,7 +1105,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
set_cpus_allowed_ptr(current, cpumask_of(i));
ret = match_pr->throttling.
acpi_processor_set_throttling(
- match_pr, t_state.target_state);
+ match_pr, t_state.target_state, force);
}
}
/*
@@ -1201,7 +1203,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Disabling throttling (was T%d)\n",
pr->throttling.state));
- result = acpi_processor_set_throttling(pr, 0);
+ result = acpi_processor_set_throttling(pr, 0, false);
if (result)
goto end;
}
@@ -1307,7 +1309,7 @@ static ssize_t acpi_processor_write_throttling(struct file *file,
if (strcmp(tmpbuf, charp) != 0)
return -EINVAL;
- result = acpi_processor_set_throttling(pr, state_val);
+ result = acpi_processor_set_throttling(pr, state_val, false);
if (result)
return result;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8ff510b91d8..781435d7e36 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -95,7 +95,7 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
-static int acpi_bus_hot_remove_device(void *context)
+static void acpi_bus_hot_remove_device(void *context)
{
struct acpi_device *device;
acpi_handle handle = context;
@@ -104,10 +104,10 @@ static int acpi_bus_hot_remove_device(void *context)
acpi_status status = AE_OK;
if (acpi_bus_get_device(handle, &device))
- return 0;
+ return;
if (!device)
- return 0;
+ return;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Hot-removing device %s...\n", dev_name(&device->dev)));
@@ -115,7 +115,7 @@ static int acpi_bus_hot_remove_device(void *context)
if (acpi_bus_trim(device, 1)) {
printk(KERN_ERR PREFIX
"Removing device failed\n");
- return -1;
+ return;
}
/* power off device */
@@ -142,9 +142,10 @@ static int acpi_bus_hot_remove_device(void *context)
*/
status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ printk(KERN_WARNING PREFIX
+ "Eject device failed\n");
- return 0;
+ return;
}
static ssize_t
@@ -155,7 +156,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
acpi_status status;
acpi_object_type type = 0;
struct acpi_device *acpi_device = to_acpi_device(d);
- struct task_struct *task;
if ((!count) || (buf[0] != '1')) {
return -EINVAL;
@@ -172,11 +172,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
goto err;
}
- /* remove the device in another thread to fix the deadlock issue */
- task = kthread_run(acpi_bus_hot_remove_device,
- acpi_device->handle, "acpi_hot_remove_device");
- if (IS_ERR(task))
- ret = PTR_ERR(task);
+ acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle);
err:
return ret;
}
@@ -198,12 +194,12 @@ acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *b
int result;
result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
- if(result)
+ if (result)
goto end;
result = sprintf(buf, "%s\n", (char*)path.pointer);
kfree(path.pointer);
- end:
+end:
return result;
}
static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
@@ -217,21 +213,21 @@ static int acpi_device_setup_files(struct acpi_device *dev)
/*
* Devices gotten from FADT don't have a "path" attribute
*/
- if(dev->handle) {
+ if (dev->handle) {
result = device_create_file(&dev->dev, &dev_attr_path);
- if(result)
+ if (result)
goto end;
}
- if(dev->flags.hardware_id) {
+ if (dev->flags.hardware_id) {
result = device_create_file(&dev->dev, &dev_attr_hid);
- if(result)
+ if (result)
goto end;
}
- if (dev->flags.hardware_id || dev->flags.compatible_ids){
+ if (dev->flags.hardware_id || dev->flags.compatible_ids) {
result = device_create_file(&dev->dev, &dev_attr_modalias);
- if(result)
+ if (result)
goto end;
}
@@ -242,7 +238,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
status = acpi_get_handle(dev->handle, "_EJ0", &temp);
if (ACPI_SUCCESS(status))
result = device_create_file(&dev->dev, &dev_attr_eject);
- end:
+end:
return result;
}
@@ -262,9 +258,9 @@ static void acpi_device_remove_files(struct acpi_device *dev)
if (dev->flags.hardware_id || dev->flags.compatible_ids)
device_remove_file(&dev->dev, &dev_attr_modalias);
- if(dev->flags.hardware_id)
+ if (dev->flags.hardware_id)
device_remove_file(&dev->dev, &dev_attr_hid);
- if(dev->handle)
+ if (dev->handle)
device_remove_file(&dev->dev, &dev_attr_path);
}
/* --------------------------------------------------------------------------
@@ -512,7 +508,7 @@ static int acpi_device_register(struct acpi_device *device,
break;
}
}
- if(!found) {
+ if (!found) {
acpi_device_bus_id = new_bus_id;
strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device");
acpi_device_bus_id->instance_no = 0;
@@ -530,22 +526,21 @@ static int acpi_device_register(struct acpi_device *device,
if (device->parent)
device->dev.parent = &parent->dev;
device->dev.bus = &acpi_bus_type;
- device_initialize(&device->dev);
device->dev.release = &acpi_device_release;
- result = device_add(&device->dev);
- if(result) {
- dev_err(&device->dev, "Error adding device\n");
+ result = device_register(&device->dev);
+ if (result) {
+ dev_err(&device->dev, "Error registering device\n");
goto end;
}
result = acpi_device_setup_files(device);
- if(result)
+ if (result)
printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
dev_name(&device->dev));
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
- end:
+end:
mutex_lock(&acpi_device_lock);
if (device->parent)
list_del(&device->node);
@@ -577,7 +572,7 @@ static void acpi_device_unregister(struct acpi_device *device, int type)
* @device: the device to add and initialize
* @driver: driver for the device
*
- * Used to initialize a device via its device driver. Called whenever a
+ * Used to initialize a device via its device driver. Called whenever a
* driver is bound to a device. Invokes the driver's add() ops.
*/
static int
@@ -585,7 +580,6 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
{
int result = 0;
-
if (!device || !driver)
return -EINVAL;
@@ -802,7 +796,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
if (!acpi_match_device_ids(device, button_device_ids))
device->wakeup.flags.run_wake = 1;
- end:
+end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
return 0;
@@ -1070,7 +1064,7 @@ static void acpi_device_set_id(struct acpi_device *device,
break;
}
- /*
+ /*
* \_SB
* ----
* Fix for the system root bus device -- the only root-level device.
@@ -1320,7 +1314,7 @@ acpi_add_single_object(struct acpi_device **child,
device->parent->ops.bind(device);
}
- end:
+end:
if (!result)
*child = device;
else {
@@ -1464,7 +1458,6 @@ acpi_bus_add(struct acpi_device **child,
return result;
}
-
EXPORT_SYMBOL(acpi_bus_add);
int acpi_bus_start(struct acpi_device *device)
@@ -1484,7 +1477,6 @@ int acpi_bus_start(struct acpi_device *device)
}
return result;
}
-
EXPORT_SYMBOL(acpi_bus_start);
int acpi_bus_trim(struct acpi_device *start, int rmdevice)
@@ -1542,7 +1534,6 @@ int acpi_bus_trim(struct acpi_device *start, int rmdevice)
}
EXPORT_SYMBOL_GPL(acpi_bus_trim);
-
static int acpi_bus_scan_fixed(struct acpi_device *root)
{
int result = 0;
@@ -1610,6 +1601,6 @@ int __init acpi_scan_init(void)
if (result)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
- Done:
+Done:
return result;
}
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 01574a06653..42159a28f43 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -397,6 +397,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
},
},
{
+ .callback = init_set_sci_en_on_resume,
+ .ident = "Hewlett-Packard HP G7000 Notebook PC",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"),
+ },
+ },
+ {
.callback = init_old_suspend_ordering,
.ident = "Panasonic CF51-2L",
.matches = {
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 0944daec064..9c61ab2177c 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -121,7 +121,7 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
table_attr->attr.size = 0;
table_attr->attr.read = acpi_table_show;
table_attr->attr.attr.name = table_attr->name;
- table_attr->attr.attr.mode = 0444;
+ table_attr->attr.attr.mode = 0400;
return;
}
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 1bdfb37377e..60ea984c84a 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -76,6 +76,7 @@ MODULE_LICENSE("GPL");
static int brightness_switch_enabled = 1;
module_param(brightness_switch_enabled, bool, 0644);
+static int register_count = 0;
static int acpi_video_bus_add(struct acpi_device *device);
static int acpi_video_bus_remove(struct acpi_device *device, int type);
static int acpi_video_resume(struct acpi_device *device);
@@ -586,6 +587,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
},
},
+ {
+ .callback = video_set_bqc_offset,
+ .ident = "Acer Aspire 7720",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"),
+ },
+ },
{}
};
@@ -976,6 +985,11 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->backlight->props.max_brightness = device->brightness->count-3;
kfree(name);
+ result = sysfs_create_link(&device->backlight->dev.kobj,
+ &device->dev->dev.kobj, "device");
+ if (result)
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+
device->cdev = thermal_cooling_device_register("LCD",
device->dev, &video_cooling_ops);
if (IS_ERR(device->cdev))
@@ -1054,15 +1068,15 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
static int acpi_video_bus_check(struct acpi_video_bus *video)
{
acpi_status status = -ENOENT;
- struct device *dev;
+ struct pci_dev *dev;
if (!video)
return -EINVAL;
- dev = acpi_get_physical_pci_device(video->device->handle);
+ dev = acpi_get_pci_dev(video->device->handle);
if (!dev)
return -ENODEV;
- put_device(dev);
+ pci_dev_put(dev);
/* Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
@@ -1990,7 +2004,11 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
status = acpi_remove_notify_handler(device->dev->handle,
ACPI_DEVICE_NOTIFY,
acpi_video_device_notify);
- backlight_device_unregister(device->backlight);
+ if (device->backlight) {
+ sysfs_remove_link(&device->backlight->dev.kobj, "device");
+ backlight_device_unregister(device->backlight);
+ device->backlight = NULL;
+ }
if (device->cdev) {
sysfs_remove_link(&device->dev->dev.kobj,
"thermal_cooling");
@@ -2318,6 +2336,13 @@ static int __init intel_opregion_present(void)
int acpi_video_register(void)
{
int result = 0;
+ if (register_count) {
+ /*
+ * if the function of acpi_video_register is already called,
+ * don't register the acpi_vide_bus again and return no error.
+ */
+ return 0;
+ }
acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
if (!acpi_video_dir)
@@ -2329,10 +2354,35 @@ int acpi_video_register(void)
return -ENODEV;
}
+ /*
+ * When the acpi_video_bus is loaded successfully, increase
+ * the counter reference.
+ */
+ register_count = 1;
+
return 0;
}
EXPORT_SYMBOL(acpi_video_register);
+void acpi_video_unregister(void)
+{
+ if (!register_count) {
+ /*
+ * If the acpi video bus is already unloaded, don't
+ * unload it again and return directly.
+ */
+ return;
+ }
+ acpi_bus_unregister_driver(&acpi_video_bus);
+
+ remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
+
+ register_count = 0;
+
+ return;
+}
+EXPORT_SYMBOL(acpi_video_unregister);
+
/*
* This is kind of nasty. Hardware using Intel chipsets may require
* the video opregion code to be run first in order to initialise
@@ -2350,16 +2400,12 @@ static int __init acpi_video_init(void)
return acpi_video_register();
}
-void acpi_video_exit(void)
+static void __exit acpi_video_exit(void)
{
-
- acpi_bus_unregister_driver(&acpi_video_bus);
-
- remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
+ acpi_video_unregister();
return;
}
-EXPORT_SYMBOL(acpi_video_exit);
module_init(acpi_video_init);
module_exit(acpi_video_exit);
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 09737275e25..7cd2b63435e 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -10,7 +10,7 @@
* assinged
*
* After PCI devices are glued with ACPI devices
- * acpi_get_physical_pci_device() can be called to identify ACPI graphics
+ * acpi_get_pci_dev() can be called to identify ACPI graphics
* devices for which a real graphics card is plugged in
*
* Now acpi_video_get_capabilities() can be called to check which
@@ -36,6 +36,7 @@
#include <linux/acpi.h>
#include <linux/dmi.h>
+#include <linux/pci.h>
ACPI_MODULE_NAME("video");
#define _COMPONENT ACPI_VIDEO_COMPONENT
@@ -109,7 +110,7 @@ static acpi_status
find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
{
long *cap = context;
- struct device *dev;
+ struct pci_dev *dev;
struct acpi_device *acpi_dev;
const struct acpi_device_id video_ids[] = {
@@ -120,10 +121,10 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
return AE_OK;
if (!acpi_match_device_ids(acpi_dev, video_ids)) {
- dev = acpi_get_physical_pci_device(handle);
+ dev = acpi_get_pci_dev(handle);
if (!dev)
return AE_OK;
- put_device(dev);
+ pci_dev_put(dev);
*cap |= acpi_is_video_device(acpi_dev);
}
return AE_OK;