diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/acpi_processor.c | 3 | ||||
-rw-r--r-- | drivers/acpi/battery.c | 2 | ||||
-rw-r--r-- | drivers/acpi/glue.c | 133 | ||||
-rw-r--r-- | drivers/acpi/internal.h | 2 | ||||
-rw-r--r-- | drivers/acpi/proc.c | 8 | ||||
-rw-r--r-- | drivers/acpi/video.c | 80 | ||||
-rw-r--r-- | drivers/acpi/video_detect.c | 15 |
7 files changed, 126 insertions, 117 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index fd6c51c..5a74a9c 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 082b4dd..d405fba 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/glue.c b/drivers/acpi/glue.c index f680957..408f6b2 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 227aca7..5da44e8 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 aa1227a..04a1378 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 6dd237e..3270d3c 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -689,7 +689,7 @@ 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) @@ -908,10 +908,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) 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; @@ -920,6 +917,9 @@ 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; @@ -979,11 +979,6 @@ 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; } } @@ -1366,8 +1361,8 @@ 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) @@ -1875,46 +1870,6 @@ 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) @@ -1946,25 +1901,14 @@ 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; } @@ -1980,7 +1924,7 @@ 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 826e52d..c339774 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -238,12 +238,7 @@ 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); @@ -291,14 +286,6 @@ 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. |