summaryrefslogtreecommitdiff
path: root/drivers/acpi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/acpi_processor.c3
-rw-r--r--drivers/acpi/battery.c2
-rw-r--r--drivers/acpi/dock.c4
-rw-r--r--drivers/acpi/glue.c133
-rw-r--r--drivers/acpi/internal.h2
-rw-r--r--drivers/acpi/proc.c8
-rw-r--r--drivers/acpi/video.c80
-rw-r--r--drivers/acpi/video_detect.c15
8 files changed, 129 insertions, 118 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index fd6c51cc3acb..5a74a9c1e42c 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -451,7 +451,6 @@ static void acpi_processor_remove(struct acpi_device *device)
/* Clean up. */
per_cpu(processor_device_array, pr->id) = NULL;
per_cpu(processors, pr->id) = NULL;
- try_offline_node(cpu_to_node(pr->id));
/* Remove the CPU. */
get_online_cpus();
@@ -459,6 +458,8 @@ static void acpi_processor_remove(struct acpi_device *device)
acpi_unmap_lsapic(pr->id);
put_online_cpus();
+ try_offline_node(cpu_to_node(pr->id));
+
out:
free_cpumask_var(pr->throttling.shared_cpu_map);
kfree(pr);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 74669ac4c615..da9fcaac1e85 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -117,6 +117,7 @@ struct acpi_battery {
struct acpi_device *device;
struct notifier_block pm_nb;
unsigned long update_time;
+ int revision;
int rate_now;
int capacity_now;
int voltage_now;
@@ -359,6 +360,7 @@ static struct acpi_offsets info_offsets[] = {
};
static struct acpi_offsets extended_info_offsets[] = {
+ {offsetof(struct acpi_battery, revision), 0},
{offsetof(struct acpi_battery, power_unit), 0},
{offsetof(struct acpi_battery, design_capacity), 0},
{offsetof(struct acpi_battery, full_charge_capacity), 0},
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index f601658a4ad2..b527c1bd8bb2 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -881,8 +881,10 @@ static int __init dock_add(acpi_handle handle)
status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
dock_notify_handler, dock_station);
- if (ACPI_FAILURE(status))
+ if (ACPI_FAILURE(status)) {
+ ret = -ENODEV;
goto err_rmgroup;
+ }
dock_station_count++;
list_add(&dock_station->sibling, &dock_stations);
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index f68095756fb7..408f6b2a5fa8 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -31,6 +31,7 @@ static LIST_HEAD(bus_type_list);
static DECLARE_RWSEM(bus_type_sem);
#define PHYSICAL_NODE_STRING "physical_node"
+#define PHYSICAL_NODE_NAME_SIZE (sizeof(PHYSICAL_NODE_STRING) + 10)
int register_acpi_bus_type(struct acpi_bus_type *type)
{
@@ -78,41 +79,108 @@ static struct acpi_bus_type *acpi_get_bus_type(struct device *dev)
return ret;
}
-static acpi_status do_acpi_find_child(acpi_handle handle, u32 lvl_not_used,
- void *addr_p, void **ret_p)
+static acpi_status acpi_dev_present(acpi_handle handle, u32 lvl_not_used,
+ void *not_used, void **ret_p)
{
- unsigned long long addr, sta;
- acpi_status status;
+ struct acpi_device *adev = NULL;
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &addr);
- if (ACPI_SUCCESS(status) && addr == *((u64 *)addr_p)) {
+ acpi_bus_get_device(handle, &adev);
+ if (adev) {
*ret_p = handle;
- status = acpi_bus_get_status_handle(handle, &sta);
- if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_ENABLED))
- return AE_CTRL_TERMINATE;
+ return AE_CTRL_TERMINATE;
}
return AE_OK;
}
-acpi_handle acpi_get_child(acpi_handle parent, u64 address)
+static bool acpi_extra_checks_passed(acpi_handle handle, bool is_bridge)
{
- void *ret = NULL;
+ unsigned long long sta;
+ acpi_status status;
+
+ status = acpi_bus_get_status_handle(handle, &sta);
+ if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_ENABLED))
+ return false;
+
+ if (is_bridge) {
+ void *test = NULL;
+
+ /* Check if this object has at least one child device. */
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
+ acpi_dev_present, NULL, NULL, &test);
+ return !!test;
+ }
+ return true;
+}
+
+struct find_child_context {
+ u64 addr;
+ bool is_bridge;
+ acpi_handle ret;
+ bool ret_checked;
+};
+
+static acpi_status do_find_child(acpi_handle handle, u32 lvl_not_used,
+ void *data, void **not_used)
+{
+ struct find_child_context *context = data;
+ unsigned long long addr;
+ acpi_status status;
- if (!parent)
- return NULL;
+ status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &addr);
+ if (ACPI_FAILURE(status) || addr != context->addr)
+ return AE_OK;
- acpi_walk_namespace(ACPI_TYPE_DEVICE, parent, 1, NULL,
- do_acpi_find_child, &address, &ret);
- return (acpi_handle)ret;
+ if (!context->ret) {
+ /* This is the first matching object. Save its handle. */
+ context->ret = handle;
+ return AE_OK;
+ }
+ /*
+ * There is more than one matching object with the same _ADR value.
+ * That really is unexpected, so we are kind of beyond the scope of the
+ * spec here. We have to choose which one to return, though.
+ *
+ * First, check if the previously found object is good enough and return
+ * its handle if so. Second, check the same for the object that we've
+ * just found.
+ */
+ if (!context->ret_checked) {
+ if (acpi_extra_checks_passed(context->ret, context->is_bridge))
+ return AE_CTRL_TERMINATE;
+ else
+ context->ret_checked = true;
+ }
+ if (acpi_extra_checks_passed(handle, context->is_bridge)) {
+ context->ret = handle;
+ return AE_CTRL_TERMINATE;
+ }
+ return AE_OK;
}
-EXPORT_SYMBOL(acpi_get_child);
+
+acpi_handle acpi_find_child(acpi_handle parent, u64 addr, bool is_bridge)
+{
+ if (parent) {
+ struct find_child_context context = {
+ .addr = addr,
+ .is_bridge = is_bridge,
+ };
+
+ acpi_walk_namespace(ACPI_TYPE_DEVICE, parent, 1, do_find_child,
+ NULL, &context, NULL);
+ return context.ret;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(acpi_find_child);
int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
acpi_status status;
struct acpi_device_physical_node *physical_node, *pn;
- char physical_node_name[sizeof(PHYSICAL_NODE_STRING) + 2];
+ char physical_node_name[PHYSICAL_NODE_NAME_SIZE];
+ struct list_head *physnode_list;
+ unsigned int node_id;
int retval = -EINVAL;
if (ACPI_HANDLE(dev)) {
@@ -139,25 +207,27 @@ int acpi_bind_one(struct device *dev, acpi_handle handle)
mutex_lock(&acpi_dev->physical_node_lock);
- /* Sanity check. */
- list_for_each_entry(pn, &acpi_dev->physical_node_list, node)
+ /*
+ * Keep the list sorted by node_id so that the IDs of removed nodes can
+ * be recycled easily.
+ */
+ physnode_list = &acpi_dev->physical_node_list;
+ node_id = 0;
+ list_for_each_entry(pn, &acpi_dev->physical_node_list, node) {
+ /* Sanity check. */
if (pn->dev == dev) {
dev_warn(dev, "Already associated with ACPI node\n");
goto err_free;
}
-
- /* allocate physical node id according to physical_node_id_bitmap */
- physical_node->node_id =
- find_first_zero_bit(acpi_dev->physical_node_id_bitmap,
- ACPI_MAX_PHYSICAL_NODE);
- if (physical_node->node_id >= ACPI_MAX_PHYSICAL_NODE) {
- retval = -ENOSPC;
- goto err_free;
+ if (pn->node_id == node_id) {
+ physnode_list = &pn->node;
+ node_id++;
+ }
}
- set_bit(physical_node->node_id, acpi_dev->physical_node_id_bitmap);
+ physical_node->node_id = node_id;
physical_node->dev = dev;
- list_add_tail(&physical_node->node, &acpi_dev->physical_node_list);
+ list_add(&physical_node->node, physnode_list);
acpi_dev->physical_node_count++;
mutex_unlock(&acpi_dev->physical_node_lock);
@@ -208,7 +278,7 @@ int acpi_unbind_one(struct device *dev)
mutex_lock(&acpi_dev->physical_node_lock);
list_for_each_safe(node, next, &acpi_dev->physical_node_list) {
- char physical_node_name[sizeof(PHYSICAL_NODE_STRING) + 2];
+ char physical_node_name[PHYSICAL_NODE_NAME_SIZE];
entry = list_entry(node, struct acpi_device_physical_node,
node);
@@ -216,7 +286,6 @@ int acpi_unbind_one(struct device *dev)
continue;
list_del(node);
- clear_bit(entry->node_id, acpi_dev->physical_node_id_bitmap);
acpi_dev->physical_node_count--;
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 227aca77ee1e..5da44e81dd4d 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -169,10 +169,8 @@ int acpi_create_platform_device(struct acpi_device *adev,
-------------------------------------------------------------------------- */
#if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
bool acpi_video_backlight_quirks(void);
-bool acpi_video_verify_backlight_support(void);
#else
static inline bool acpi_video_backlight_quirks(void) { return false; }
-static inline bool acpi_video_verify_backlight_support(void) { return false; }
#endif
#endif /* _ACPI_INTERNAL_H_ */
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index aa1227a7e3f2..04a13784dd20 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -311,6 +311,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
dev->pnp.bus_id,
(u32) dev->wakeup.sleep_state);
+ mutex_lock(&dev->physical_node_lock);
+
if (!dev->physical_node_count) {
seq_printf(seq, "%c%-8s\n",
dev->wakeup.flags.run_wake ? '*' : ' ',
@@ -338,6 +340,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
put_device(ldev);
}
}
+
+ mutex_unlock(&dev->physical_node_lock);
}
mutex_unlock(&acpi_device_lock);
return 0;
@@ -347,12 +351,16 @@ static void physical_device_enable_wakeup(struct acpi_device *adev)
{
struct acpi_device_physical_node *entry;
+ mutex_lock(&adev->physical_node_lock);
+
list_for_each_entry(entry,
&adev->physical_node_list, node)
if (entry->dev && device_can_wakeup(entry->dev)) {
bool enable = !device_may_wakeup(entry->dev);
device_set_wakeup_enable(entry->dev, enable);
}
+
+ mutex_unlock(&adev->physical_node_lock);
}
static ssize_t
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index f1fb2429dbb0..725143016f3b 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -682,7 +682,7 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device,
* Some systems always report current brightness level as maximum
* through _BQC, we need to test another value for them.
*/
- test_level = current_level == max_level ? br->levels[2] : max_level;
+ test_level = current_level == max_level ? br->levels[3] : max_level;
result = acpi_video_device_lcd_set_level(device, test_level);
if (result)
@@ -894,10 +894,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
if (acpi_has_method(device->dev->handle, "_DDC"))
device->cap._DDC = 1;
- if (acpi_video_init_brightness(device))
- return;
-
- if (acpi_video_verify_backlight_support()) {
+ if (acpi_video_backlight_support()) {
struct backlight_properties props;
struct pci_dev *pdev;
acpi_handle acpi_parent;
@@ -906,6 +903,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
static int count = 0;
char *name;
+ result = acpi_video_init_brightness(device);
+ if (result)
+ return;
name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
if (!name)
return;
@@ -965,11 +965,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
if (result)
printk(KERN_ERR PREFIX "Create sysfs link\n");
- } else {
- /* Remove the brightness object. */
- kfree(device->brightness->levels);
- kfree(device->brightness);
- device->brightness = NULL;
}
}
@@ -1344,8 +1339,8 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event)
unsigned long long level_current, level_next;
int result = -EINVAL;
- /* no warning message if acpi_backlight=vendor or a quirk is used */
- if (!acpi_video_verify_backlight_support())
+ /* no warning message if acpi_backlight=vendor is used */
+ if (!acpi_video_backlight_support())
return 0;
if (!device->brightness)
@@ -1853,46 +1848,6 @@ static int acpi_video_bus_remove(struct acpi_device *device)
return 0;
}
-static acpi_status video_unregister_backlight(acpi_handle handle, u32 lvl,
- void *context, void **rv)
-{
- struct acpi_device *acpi_dev;
- struct acpi_video_bus *video;
- struct acpi_video_device *dev, *next;
-
- if (acpi_bus_get_device(handle, &acpi_dev))
- return AE_OK;
-
- if (acpi_match_device_ids(acpi_dev, video_device_ids))
- return AE_OK;
-
- video = acpi_driver_data(acpi_dev);
- if (!video)
- return AE_OK;
-
- acpi_video_bus_stop_devices(video);
- mutex_lock(&video->device_list_lock);
- list_for_each_entry_safe(dev, next, &video->video_device_list, entry) {
- if (dev->backlight) {
- backlight_device_unregister(dev->backlight);
- dev->backlight = NULL;
- kfree(dev->brightness->levels);
- kfree(dev->brightness);
- }
- if (dev->cooling_dev) {
- sysfs_remove_link(&dev->dev->dev.kobj,
- "thermal_cooling");
- sysfs_remove_link(&dev->cooling_dev->device.kobj,
- "device");
- thermal_cooling_device_unregister(dev->cooling_dev);
- dev->cooling_dev = NULL;
- }
- }
- mutex_unlock(&video->device_list_lock);
- acpi_video_bus_start_devices(video);
- return AE_OK;
-}
-
static int __init is_i740(struct pci_dev *dev)
{
if (dev->device == 0x00D1)
@@ -1924,25 +1879,14 @@ static int __init intel_opregion_present(void)
return opregion;
}
-int __acpi_video_register(bool backlight_quirks)
+int acpi_video_register(void)
{
- bool no_backlight;
- int result;
-
- no_backlight = backlight_quirks ? acpi_video_backlight_quirks() : false;
-
+ int result = 0;
if (register_count) {
/*
- * If acpi_video_register() has been called already, don't try
- * to register acpi_video_bus, but unregister backlight devices
- * if no backlight support is requested.
+ * if the function of acpi_video_register is already called,
+ * don't register the acpi_vide_bus again and return no error.
*/
- if (no_backlight)
- acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- video_unregister_backlight,
- NULL, NULL, NULL);
-
return 0;
}
@@ -1958,7 +1902,7 @@ int __acpi_video_register(bool backlight_quirks)
return 0;
}
-EXPORT_SYMBOL(__acpi_video_register);
+EXPORT_SYMBOL(acpi_video_register);
void acpi_video_unregister(void)
{
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index c7e43ec9b987..940edbf2fe8f 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -235,12 +235,7 @@ static void acpi_video_caps_check(void)
bool acpi_video_backlight_quirks(void)
{
- if (acpi_gbl_osi_data >= ACPI_OSI_WIN_8) {
- acpi_video_caps_check();
- acpi_video_support |= ACPI_VIDEO_SKIP_BACKLIGHT;
- return true;
- }
- return false;
+ return acpi_gbl_osi_data >= ACPI_OSI_WIN_8;
}
EXPORT_SYMBOL(acpi_video_backlight_quirks);
@@ -288,14 +283,6 @@ int acpi_video_backlight_support(void)
}
EXPORT_SYMBOL(acpi_video_backlight_support);
-/* For the ACPI video driver use only. */
-bool acpi_video_verify_backlight_support(void)
-{
- return (acpi_video_support & ACPI_VIDEO_SKIP_BACKLIGHT) ?
- false : acpi_video_backlight_support();
-}
-EXPORT_SYMBOL(acpi_video_verify_backlight_support);
-
/*
* Use acpi_backlight=vendor/video to force that backlight switching
* is processed by vendor specific acpi drivers or video.ko driver.
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-14 21:20:30 +0000