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-rw-r--r--Documentation/ABI/testing/sysfs-devices-sun14
-rw-r--r--arch/x86/kernel/acpi/sleep.c2
-rw-r--r--drivers/acpi/acpi_memhotplug.c193
-rw-r--r--drivers/acpi/acpi_pad.c8
-rw-r--r--drivers/acpi/apei/ghes.c2
-rw-r--r--drivers/acpi/battery.c77
-rw-r--r--drivers/acpi/container.c27
-rw-r--r--drivers/acpi/dock.c56
-rw-r--r--drivers/acpi/ec.c97
-rw-r--r--drivers/acpi/hed.c2
-rw-r--r--drivers/acpi/internal.h4
-rw-r--r--drivers/acpi/osl.c22
-rw-r--r--drivers/acpi/pci_irq.c10
-rw-r--r--drivers/acpi/power.c2
-rw-r--r--drivers/acpi/proc.c11
-rw-r--r--drivers/acpi/processor_driver.c74
-rw-r--r--drivers/acpi/scan.c68
-rw-r--r--drivers/acpi/sleep.c25
-rw-r--r--drivers/acpi/thermal.c34
-rw-r--r--drivers/acpi/utils.c38
-rw-r--r--include/acpi/acpi_bus.h4
-rw-r--r--include/linux/acpi.h49
-rw-r--r--kernel/cpu.c8
23 files changed, 566 insertions, 261 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-sun b/Documentation/ABI/testing/sysfs-devices-sun
new file mode 100644
index 00000000000..86be9848a77
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-sun
@@ -0,0 +1,14 @@
+Whatt: /sys/devices/.../sun
+Date: October 2012
+Contact: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
+Description:
+ The file contains a Slot-unique ID which provided by the _SUN
+ method in the ACPI namespace. The value is written in Advanced
+ Configuration and Power Interface Specification as follows:
+
+ "The _SUN value is required to be unique among the slots of
+ the same type. It is also recommended that this number match
+ the slot number printed on the physical slot whenever possible."
+
+ So reading the sysfs file, we can identify a physical position
+ of the slot in the system.
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 11676cf65ae..d5e0d717005 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -101,6 +101,8 @@ static int __init acpi_sleep_setup(char *str)
#endif
if (strncmp(str, "nonvs", 5) == 0)
acpi_nvs_nosave();
+ if (strncmp(str, "nonvs_s3", 8) == 0)
+ acpi_nvs_nosave_s3();
if (strncmp(str, "old_ordering", 12) == 0)
acpi_old_suspend_ordering();
str = strchr(str, ',');
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 24c807f9663..eb30e5ab4ca 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -31,6 +31,7 @@
#include <linux/types.h>
#include <linux/memory_hotplug.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
#include <acpi/acpi_drivers.h>
#define ACPI_MEMORY_DEVICE_CLASS "memory"
@@ -78,6 +79,7 @@ struct acpi_memory_info {
unsigned short caching; /* memory cache attribute */
unsigned short write_protect; /* memory read/write attribute */
unsigned int enabled:1;
+ unsigned int failed:1;
};
struct acpi_memory_device {
@@ -86,8 +88,6 @@ struct acpi_memory_device {
struct list_head res_list;
};
-static int acpi_hotmem_initialized;
-
static acpi_status
acpi_memory_get_resource(struct acpi_resource *resource, void *context)
{
@@ -125,12 +125,20 @@ acpi_memory_get_resource(struct acpi_resource *resource, void *context)
return AE_OK;
}
+static void
+acpi_memory_free_device_resources(struct acpi_memory_device *mem_device)
+{
+ struct acpi_memory_info *info, *n;
+
+ list_for_each_entry_safe(info, n, &mem_device->res_list, list)
+ kfree(info);
+ INIT_LIST_HEAD(&mem_device->res_list);
+}
+
static int
acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
{
acpi_status status;
- struct acpi_memory_info *info, *n;
-
if (!list_empty(&mem_device->res_list))
return 0;
@@ -138,9 +146,7 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
status = acpi_walk_resources(mem_device->device->handle, METHOD_NAME__CRS,
acpi_memory_get_resource, mem_device);
if (ACPI_FAILURE(status)) {
- list_for_each_entry_safe(info, n, &mem_device->res_list, list)
- kfree(info);
- INIT_LIST_HEAD(&mem_device->res_list);
+ acpi_memory_free_device_resources(mem_device);
return -EINVAL;
}
@@ -170,7 +176,7 @@ acpi_memory_get_device(acpi_handle handle,
/* Get the parent device */
result = acpi_bus_get_device(phandle, &pdevice);
if (result) {
- printk(KERN_WARNING PREFIX "Cannot get acpi bus device");
+ acpi_handle_warn(phandle, "Cannot get acpi bus device\n");
return -EINVAL;
}
@@ -180,14 +186,14 @@ acpi_memory_get_device(acpi_handle handle,
*/
result = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
if (result) {
- printk(KERN_WARNING PREFIX "Cannot add acpi bus");
+ acpi_handle_warn(handle, "Cannot add acpi bus\n");
return -EINVAL;
}
end:
*mem_device = acpi_driver_data(device);
if (!(*mem_device)) {
- printk(KERN_ERR "\n driver data not found");
+ dev_err(&device->dev, "driver data not found\n");
return -ENODEV;
}
@@ -224,7 +230,8 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
/* Get the range from the _CRS */
result = acpi_memory_get_device_resources(mem_device);
if (result) {
- printk(KERN_ERR PREFIX "get_device_resources failed\n");
+ dev_err(&mem_device->device->dev,
+ "get_device_resources failed\n");
mem_device->state = MEMORY_INVALID_STATE;
return result;
}
@@ -251,13 +258,27 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
node = memory_add_physaddr_to_nid(info->start_addr);
result = add_memory(node, info->start_addr, info->length);
- if (result)
+
+ /*
+ * If the memory block has been used by the kernel, add_memory()
+ * returns -EEXIST. If add_memory() returns the other error, it
+ * means that this memory block is not used by the kernel.
+ */
+ if (result && result != -EEXIST) {
+ info->failed = 1;
continue;
- info->enabled = 1;
+ }
+
+ if (!result)
+ info->enabled = 1;
+ /*
+ * Add num_enable even if add_memory() returns -EEXIST, so the
+ * device is bound to this driver.
+ */
num_enabled++;
}
if (!num_enabled) {
- printk(KERN_ERR PREFIX "add_memory failed\n");
+ dev_err(&mem_device->device->dev, "add_memory failed\n");
mem_device->state = MEMORY_INVALID_STATE;
return -EINVAL;
}
@@ -272,68 +293,31 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
return 0;
}
-static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
+static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
{
- acpi_status status;
- struct acpi_object_list arg_list;
- union acpi_object arg;
- unsigned long long current_status;
-
-
- /* Issue the _EJ0 command */
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
- status = acpi_evaluate_object(mem_device->device->handle,
- "_EJ0", &arg_list, NULL);
- /* Return on _EJ0 failure */
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "_EJ0 failed"));
- return -ENODEV;
- }
-
- /* Evalute _STA to check if the device is disabled */
- status = acpi_evaluate_integer(mem_device->device->handle, "_STA",
- NULL, &current_status);
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- /* Check for device status. Device should be disabled */
- if (current_status & ACPI_STA_DEVICE_ENABLED)
- return -EINVAL;
+ int result = 0;
+ struct acpi_memory_info *info, *n;
- return 0;
-}
+ list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
+ if (info->failed)
+ /* The kernel does not use this memory block */
+ continue;
-static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
-{
- int result;
- struct acpi_memory_info *info, *n;
+ if (!info->enabled)
+ /*
+ * The kernel uses this memory block, but it may be not
+ * managed by us.
+ */
+ return -EBUSY;
+ result = remove_memory(info->start_addr, info->length);
+ if (result)
+ return result;
- /*
- * Ask the VM to offline this memory range.
- * Note: Assume that this function returns zero on success
- */
- list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
- if (info->enabled) {
- result = remove_memory(info->start_addr, info->length);
- if (result)
- return result;
- }
+ list_del(&info->list);
kfree(info);
}
- /* Power-off and eject the device */
- result = acpi_memory_powerdown_device(mem_device);
- if (result) {
- /* Set the status of the device to invalid */
- mem_device->state = MEMORY_INVALID_STATE;
- return result;
- }
-
- mem_device->state = MEMORY_POWER_OFF_STATE;
return result;
}
@@ -341,6 +325,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_memory_device *mem_device;
struct acpi_device *device;
+ struct acpi_eject_event *ej_event = NULL;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
switch (event) {
@@ -353,7 +338,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"\nReceived DEVICE CHECK notification for device\n"));
if (acpi_memory_get_device(handle, &mem_device)) {
- printk(KERN_ERR PREFIX "Cannot find driver data\n");
+ acpi_handle_err(handle, "Cannot find driver data\n");
break;
}
@@ -361,7 +346,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
break;
if (acpi_memory_enable_device(mem_device)) {
- printk(KERN_ERR PREFIX "Cannot enable memory device\n");
+ acpi_handle_err(handle,"Cannot enable memory device\n");
break;
}
@@ -373,40 +358,28 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
"\nReceived EJECT REQUEST notification for device\n"));
if (acpi_bus_get_device(handle, &device)) {
- printk(KERN_ERR PREFIX "Device doesn't exist\n");
+ acpi_handle_err(handle, "Device doesn't exist\n");
break;
}
mem_device = acpi_driver_data(device);
if (!mem_device) {
- printk(KERN_ERR PREFIX "Driver Data is NULL\n");
+ acpi_handle_err(handle, "Driver Data is NULL\n");
break;
}
- /*
- * Currently disabling memory device from kernel mode
- * TBD: Can also be disabled from user mode scripts
- * TBD: Can also be disabled by Callback registration
- * with generic sysfs driver
- */
- if (acpi_memory_disable_device(mem_device)) {
- printk(KERN_ERR PREFIX "Disable memory device\n");
- /*
- * If _EJ0 was called but failed, _OST is not
- * necessary.
- */
- if (mem_device->state == MEMORY_INVALID_STATE)
- return;
-
+ ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
+ if (!ej_event) {
+ pr_err(PREFIX "No memory, dropping EJECT\n");
break;
}
- /*
- * TBD: Invoke acpi_bus_remove to cleanup data structures
- */
+ ej_event->handle = handle;
+ ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
+ acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
+ (void *)ej_event);
- /* _EJ0 succeeded; _OST is not necessary */
+ /* eject is performed asynchronously */
return;
-
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
@@ -420,6 +393,15 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
return;
}
+static void acpi_memory_device_free(struct acpi_memory_device *mem_device)
+{
+ if (!mem_device)
+ return;
+
+ acpi_memory_free_device_resources(mem_device);
+ kfree(mem_device);
+}
+
static int acpi_memory_device_add(struct acpi_device *device)
{
int result;
@@ -449,23 +431,16 @@ static int acpi_memory_device_add(struct acpi_device *device)
/* Set the device state */
mem_device->state = MEMORY_POWER_ON_STATE;
- printk(KERN_DEBUG "%s \n", acpi_device_name(device));
-
- /*
- * Early boot code has recognized memory area by EFI/E820.
- * If DSDT shows these memory devices on boot, hotplug is not necessary
- * for them. So, it just returns until completion of this driver's
- * start up.
- */
- if (!acpi_hotmem_initialized)
- return 0;
+ pr_debug("%s\n", acpi_device_name(device));
if (!acpi_memory_check_device(mem_device)) {
/* call add_memory func */
result = acpi_memory_enable_device(mem_device);
- if (result)
- printk(KERN_ERR PREFIX
+ if (result) {
+ dev_err(&device->dev,
"Error in acpi_memory_enable_device\n");
+ acpi_memory_device_free(mem_device);
+ }
}
return result;
}
@@ -473,13 +448,18 @@ static int acpi_memory_device_add(struct acpi_device *device)
static int acpi_memory_device_remove(struct acpi_device *device, int type)
{
struct acpi_memory_device *mem_device = NULL;
-
+ int result;
if (!device || !acpi_driver_data(device))
return -EINVAL;
mem_device = acpi_driver_data(device);
- kfree(mem_device);
+
+ result = acpi_memory_remove_memory(mem_device);
+ if (result)
+ return result;
+
+ acpi_memory_device_free(mem_device);
return 0;
}
@@ -568,7 +548,6 @@ static int __init acpi_memory_device_init(void)
return -ENODEV;
}
- acpi_hotmem_initialized = 1;
return 0;
}
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index af4aad6ee2e..16fa979f718 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -286,7 +286,7 @@ static ssize_t acpi_pad_rrtime_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
unsigned long num;
- if (strict_strtoul(buf, 0, &num))
+ if (kstrtoul(buf, 0, &num))
return -EINVAL;
if (num < 1 || num >= 100)
return -EINVAL;
@@ -309,7 +309,7 @@ static ssize_t acpi_pad_idlepct_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
unsigned long num;
- if (strict_strtoul(buf, 0, &num))
+ if (kstrtoul(buf, 0, &num))
return -EINVAL;
if (num < 1 || num >= 100)
return -EINVAL;
@@ -332,7 +332,7 @@ static ssize_t acpi_pad_idlecpus_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
unsigned long num;
- if (strict_strtoul(buf, 0, &num))
+ if (kstrtoul(buf, 0, &num))
return -EINVAL;
mutex_lock(&isolated_cpus_lock);
acpi_pad_idle_cpus(num);
@@ -457,7 +457,7 @@ static void acpi_pad_notify(acpi_handle handle, u32 event,
dev_name(&device->dev), event, 0);
break;
default:
- printk(KERN_WARNING "Unsupported event [0x%x]\n", event);
+ pr_warn("Unsupported event [0x%x]\n", event);
break;
}
}
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 1599566ed1f..da93c003e95 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -994,7 +994,7 @@ err:
return rc;
}
-static int __devexit ghes_remove(struct platform_device *ghes_dev)
+static int ghes_remove(struct platform_device *ghes_dev)
{
struct ghes *ghes;
struct acpi_hest_generic *generic;
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 45e3e1759fb..7efaeaa53b8 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -34,6 +34,7 @@
#include <linux/dmi.h>
#include <linux/slab.h>
#include <linux/suspend.h>
+#include <asm/unaligned.h>
#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
@@ -95,6 +96,18 @@ enum {
ACPI_BATTERY_ALARM_PRESENT,
ACPI_BATTERY_XINFO_PRESENT,
ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY,
+ /* On Lenovo Thinkpad models from 2010 and 2011, the power unit
+ switches between mWh and mAh depending on whether the system
+ is running on battery or not. When mAh is the unit, most
+ reported values are incorrect and need to be adjusted by
+ 10000/design_voltage. Verified on x201, t410, t410s, and x220.
+ Pre-2010 and 2012 models appear to always report in mWh and
+ are thus unaffected (tested with t42, t61, t500, x200, x300,
+ and x230). Also, in mid-2012 Lenovo issued a BIOS update for
+ the 2011 models that fixes the issue (tested on x220 with a
+ post-1.29 BIOS), but as of Nov. 2012, no such update is
+ available for the 2010 models. */
+ ACPI_BATTERY_QUIRK_THINKPAD_MAH,
};
struct acpi_battery {
@@ -438,6 +451,21 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
kfree(buffer.pointer);
if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
battery->full_charge_capacity = battery->design_capacity;
+ if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) &&
+ battery->power_unit && battery->design_voltage) {
+ battery->design_capacity = battery->design_capacity *
+ 10000 / battery->design_voltage;
+ battery->full_charge_capacity = battery->full_charge_capacity *
+ 10000 / battery->design_voltage;
+ battery->design_capacity_warning =
+ battery->design_capacity_warning *
+ 10000 / battery->design_voltage;
+ /* Curiously, design_capacity_low, unlike the rest of them,
+ is correct. */
+ /* capacity_granularity_* equal 1 on the systems tested, so
+ it's impossible to tell if they would need an adjustment
+ or not if their values were higher. */
+ }
return result;
}
@@ -486,6 +514,11 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
&& battery->capacity_now >= 0 && battery->capacity_now <= 100)
battery->capacity_now = (battery->capacity_now *
battery->full_charge_capacity) / 100;
+ if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) &&
+ battery->power_unit && battery->design_voltage) {
+ battery->capacity_now = battery->capacity_now *
+ 10000 / battery->design_voltage;
+ }
return result;
}
@@ -595,6 +628,24 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
mutex_unlock(&battery->sysfs_lock);
}
+static void find_battery(const struct dmi_header *dm, void *private)
+{
+ struct acpi_battery *battery = (struct acpi_battery *)private;
+ /* Note: the hardcoded offsets below have been extracted from
+ the source code of dmidecode. */
+ if (dm->type == DMI_ENTRY_PORTABLE_BATTERY && dm->length >= 8) {
+ const u8 *dmi_data = (const u8 *)(dm + 1);
+ int dmi_capacity = get_unaligned((const u16 *)(dmi_data + 6));
+ if (dm->length >= 18)
+ dmi_capacity *= dmi_data[17];
+ if (battery->design_capacity * battery->design_voltage / 1000
+ != dmi_capacity &&
+ battery->design_capacity * 10 == dmi_capacity)
+ set_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH,
+ &battery->flags);
+ }
+}
+
/*
* According to the ACPI spec, some kinds of primary batteries can
* report percentage battery remaining capacity directly to OS.
@@ -620,6 +671,32 @@ static void acpi_battery_quirks(struct acpi_battery *battery)
battery->capacity_now = (battery->capacity_now *
battery->full_charge_capacity) / 100;
}
+
+ if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags))
+ return ;
+
+ if (battery->power_unit && dmi_name_in_vendors("LENOVO")) {
+ const char *s;
+ s = dmi_get_system_info(DMI_PRODUCT_VERSION);
+ if (s && !strnicmp(s, "ThinkPad", 8)) {
+ dmi_walk(find_battery, battery);
+ if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH,
+ &battery->flags) &&
+ battery->design_voltage) {
+ battery->design_capacity =
+ battery->design_capacity *
+ 10000 / battery->design_voltage;
+ battery->full_charge_capacity =
+ battery->full_charge_capacity *
+ 10000 / battery->design_voltage;
+ battery->design_capacity_warning =
+ battery->design_capacity_warning *
+ 10000 / battery->design_voltage;
+ battery->capacity_now = battery->capacity_now *
+ 10000 / battery->design_voltage;
+ }
+ }
+ }
}
static int acpi_battery_update(struct acpi_battery *battery)
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 1f9f7d7d7bc..811910b50b7 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -92,17 +92,24 @@ static int is_device_present(acpi_handle handle)
return ((sta & ACPI_STA_DEVICE_PRESENT) == ACPI_STA_DEVICE_PRESENT);
}
+static bool is_container_device(const char *hid)
+{
+ const struct acpi_device_id *container_id;
+
+ for (container_id = container_device_ids;
+ container_id->id[0]; container_id++) {
+ if (!strcmp((char *)container_id->id, hid))
+ return true;
+ }
+
+ return false;
+}
+
/*******************************************************************/
static int acpi_container_add(struct acpi_device *device)
{
struct acpi_container *container;
-
- if (!device) {
- printk(KERN_ERR PREFIX "device is NULL\n");
- return -EINVAL;
- }
-
container = kzalloc(sizeof(struct acpi_container), GFP_KERNEL);
if (!container)
return -ENOMEM;
@@ -164,7 +171,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
case ACPI_NOTIFY_BUS_CHECK:
/* Fall through */
case ACPI_NOTIFY_DEVICE_CHECK:
- printk(KERN_WARNING "Container driver received %s event\n",
+ pr_debug("Container driver received %s event\n",
(type == ACPI_NOTIFY_BUS_CHECK) ?
"ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
@@ -185,7 +192,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
result = container_device_add(&device, handle);
if (result) {
- printk(KERN_WARNING "Failed to add container\n");
+ acpi_handle_warn(handle, "Failed to add container\n");
break;
}
@@ -232,10 +239,8 @@ container_walk_namespace_cb(acpi_handle handle,
goto end;
}
- if (strcmp(hid, "ACPI0004") && strcmp(hid, "PNP0A05") &&
- strcmp(hid, "PNP0A06")) {
+ if (!is_container_device(hid))
goto end;
- }
switch (*action) {
case INSTALL_NOTIFY_HANDLER:
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 88eb1430466..f32bd47b35e 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -31,6 +31,7 @@
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/stddef.h>
+#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -460,12 +461,8 @@ static void handle_dock(struct dock_station *ds, int dock)
struct acpi_object_list arg_list;
union acpi_object arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- acpi_get_name(ds->handle, ACPI_FULL_PATHNAME, &name_buffer);
-
- printk(KERN_INFO PREFIX "%s - %s\n",
- (char *)name_buffer.pointer, dock ? "docking" : "undocking");
+ acpi_handle_info(ds->handle, "%s\n", dock ? "docking" : "undocking");
/* _DCK method has one argument */
arg_list.count = 1;
@@ -474,11 +471,10 @@ static void handle_dock(struct dock_station *ds, int dock)
arg.integer.value = dock;
status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
- ACPI_EXCEPTION((AE_INFO, status, "%s - failed to execute"
- " _DCK\n", (char *)name_buffer.pointer));
+ acpi_handle_err(ds->handle, "Failed to execute _DCK (0x%x)\n",
+ status);
kfree(buffer.pointer);
- kfree(name_buffer.pointer);
}
static inline void dock(struct dock_station *ds)
@@ -525,9 +521,11 @@ static void dock_lock(struct dock_station *ds, int lock)
status = acpi_evaluate_object(ds->handle, "_LCK", &arg_list, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
if (lock)
- printk(KERN_WARNING PREFIX "Locking device failed\n");
+ acpi_handle_warn(ds->handle,
+ "Locking device failed (0x%x)\n", status);
else
- printk(KERN_WARNING PREFIX "Unlocking device failed\n");
+ acpi_handle_warn(ds->handle,
+ "Unlocking device failed (0x%x)\n", status);
}
}
@@ -667,7 +665,7 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
dock_lock(ds, 0);
eject_dock(ds);
if (dock_present(ds)) {
- printk(KERN_ERR PREFIX "Unable to undock!\n");
+ acpi_handle_err(ds->handle, "Unable to undock!\n");
return -EBUSY;
}
complete_undock(ds);
@@ -715,7 +713,7 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
begin_dock(ds);
dock(ds);
if (!dock_present(ds)) {
- printk(KERN_ERR PREFIX "Unable to dock!\n");
+ acpi_handle_err(handle, "Unable to dock!\n");
complete_dock(ds);
break;
}
@@ -743,7 +741,7 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
dock_event(ds, event, UNDOCK_EVENT);
break;
default:
- printk(KERN_ERR PREFIX "Unknown dock event %d\n", event);
+ acpi_handle_err(handle, "Unknown dock event %d\n", event);
}
}
@@ -987,7 +985,7 @@ err_rmgroup:
sysfs_remove_group(&dd->dev.kobj, &dock_attribute_group);
err_unregister:
platform_device_unregister(dd);
- printk(KERN_ERR "%s encountered error %d\n", __func__, ret);
+ acpi_handle_err(handle, "%s encountered error %d\n", __func__, ret);
return ret;
}
@@ -1016,51 +1014,39 @@ static int dock_remove(struct dock_station *ds)
}
/**
- * find_dock - look for a dock station
+ * find_dock_and_bay - look for dock stations and bays
* @handle: acpi handle of a device
* @lvl: unused
- * @context: counter of dock stations found
+ * @context: unused
* @rv: unused
*
- * This is called by acpi_walk_namespace to look for dock stations.
+ * This is called by acpi_walk_namespace to look for dock stations and bays.
*/
static __init acpi_status
-find_dock(acpi_handle handle, u32 lvl, void *context, void **rv)
+find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
{
- if (is_dock(handle))
+ if (is_dock(handle) || is_ejectable_bay(handle))
dock_add(handle);
return AE_OK;
}
-static __init acpi_status
-find_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
- /* If bay is a dock, it's already handled */
- if (is_ejectable_bay(handle) && !is_dock(handle))
- dock_add(handle);
- return AE_OK;
-}
-
static int __init dock_init(void)
{
if (acpi_disabled)
return 0;
- /* look for a dock station */
+ /* look for dock stations and bays */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX, find_dock, NULL, NULL, NULL);
+ ACPI_UINT32_MAX, find_dock_and_bay, NULL, NULL, NULL);
- /* look for bay */
- acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX, find_bay, NULL, NULL, NULL);
if (!dock_station_count) {
- printk(KERN_INFO PREFIX "No dock devices found.\n");
+ pr_info(PREFIX "No dock devices found.\n");
return 0;
}
register_acpi_bus_notifier(&dock_acpi_notifier);
- printk(KERN_INFO PREFIX "%s: %d docks/bays found\n",
+ pr_info(PREFIX "%s: %d docks/bays found\n",
ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
return 0;
}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a51df968131..354007d490d 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -158,10 +158,10 @@ static int ec_transaction_done(struct acpi_ec *ec)
{
unsigned long flags;
int ret = 0;
- spin_lock_irqsave(&ec->curr_lock, flags);
+ spin_lock_irqsave(&ec->lock, flags);
if (!ec->curr || ec->curr->done)
ret = 1;
- spin_unlock_irqrestore(&ec->curr_lock, flags);
+ spin_unlock_irqrestore(&ec->lock, flags);
return ret;
}
@@ -175,32 +175,38 @@ static void start_transaction(struct acpi_ec *ec)
static void advance_transaction(struct acpi_ec *ec, u8 status)
{
unsigned long flags;
- spin_lock_irqsave(&ec->curr_lock, flags);
- if (!ec->curr)
+ struct transaction *t = ec->curr;
+
+ spin_lock_irqsave(&ec->lock, flags);
+ if (!t)
goto unlock;
- if (ec->curr->wlen > ec->curr->wi) {
+ if (t->wlen > t->wi) {
if ((status & ACPI_EC_FLAG_IBF) == 0)
acpi_ec_write_data(ec,
- ec->curr->wdata[ec->curr->wi++]);
+ t->wdata[t->wi++]);
else
goto err;
- } else if (ec->curr->rlen > ec->curr->ri) {
+ } else if (t->rlen > t->ri) {
if ((status & ACPI_EC_FLAG_OBF) == 1) {
- ec->curr->rdata[ec->curr->ri++] = acpi_ec_read_data(ec);
- if (ec->curr->rlen == ec->curr->ri)
- ec->curr->done = true;
+ t->rdata[t->ri++] = acpi_ec_read_data(ec);
+ if (t->rlen == t->ri)
+ t->done = true;
} else
goto err;
- } else if (ec->curr->wlen == ec->curr->wi &&
+ } else if (t->wlen == t->wi &&
(status & ACPI_EC_FLAG_IBF) == 0)
- ec->curr->done = true;
+ t->done = true;
goto unlock;
err:
- /* false interrupt, state didn't change */
- if (in_interrupt())
- ++ec->curr->irq_count;
+ /*
+ * If SCI bit is set, then don't think it's a false IRQ
+ * otherwise will take a not handled IRQ as a false one.
+ */
+ if (in_interrupt() && !(status & ACPI_EC_FLAG_SCI))
+ ++t->irq_count;
+
unlock:
- spin_unlock_irqrestore(&ec->curr_lock, flags);
+ spin_unlock_irqrestore(&ec->lock, flags);
}
static int acpi_ec_sync_query(struct acpi_ec *ec);
@@ -238,9 +244,9 @@ static int ec_poll(struct acpi_ec *ec)
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
break;
pr_debug(PREFIX "controller reset, restart transaction\n");
- spin_lock_irqsave(&ec->curr_lock, flags);
+ spin_lock_irqsave(&ec->lock, flags);
start_transaction(ec);
- spin_unlock_irqrestore(&ec->curr_lock, flags);
+ spin_unlock_irqrestore(&ec->lock, flags);
}
return -ETIME;
}
@@ -253,17 +259,17 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
if (EC_FLAGS_MSI)
udelay(ACPI_EC_MSI_UDELAY);
/* start transaction */
- spin_lock_irqsave(&ec->curr_lock, tmp);
+ spin_lock_irqsave(&ec->lock, tmp);
/* following two actions should be kept atomic */
ec->curr = t;
start_transaction(ec);
if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
- spin_unlock_irqrestore(&ec->curr_lock, tmp);
+ spin_unlock_irqrestore(&ec->lock, tmp);
ret = ec_poll(ec);
- spin_lock_irqsave(&ec->curr_lock, tmp);
+ spin_lock_irqsave(&ec->lock, tmp);
ec->curr = NULL;
- spin_unlock_irqrestore(&ec->curr_lock, tmp);
+ spin_unlock_irqrestore(&ec->lock, tmp);
return ret;
}
@@ -292,7 +298,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
return -EINVAL;
if (t->rdata)
memset(t->rdata, 0, t->rlen);
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
if (test_bit(EC_FLAGS_BLOCKED, &ec->flags)) {
status = -EINVAL;
goto unlock;
@@ -310,7 +316,8 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
status = -ETIME;
goto end;
}
- pr_debug(PREFIX "transaction start\n");
+ pr_debug(PREFIX "transaction start (cmd=0x%02x, addr=0x%02x)\n",
+ t->command, t->wdata ? t->wdata[0] : 0);
/* disable GPE during transaction if storm is detected */
if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
/* It has to be disabled, so that it doesn't trigger. */
@@ -326,8 +333,9 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)
/* It is safe to enable the GPE outside of the transaction. */
acpi_enable_gpe(NULL, ec->gpe);
} else if (t->irq_count > ec_storm_threshold) {
- pr_info(PREFIX "GPE storm detected, "
- "transactions will use polling mode\n");
+ pr_info(PREFIX "GPE storm detected(%d GPEs), "
+ "transactions will use polling mode\n",
+ t->irq_count);
set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
}
pr_debug(PREFIX "transaction end\n");
@@ -335,7 +343,7 @@ end:
if (ec->global_lock)
acpi_release_global_lock(glk);
unlock:
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
return status;
}
@@ -403,7 +411,7 @@ int ec_burst_disable(void)
EXPORT_SYMBOL(ec_burst_disable);
-int ec_read(u8 addr, u8 * val)
+int ec_read(u8 addr, u8 *val)
{
int err;
u8 temp_data;
@@ -468,10 +476,10 @@ void acpi_ec_block_transactions(void)
if (!ec)
return;
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
/* Prevent transactions from being carried out */
set_bit(EC_FLAGS_BLOCKED, &ec->flags);
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
}
void acpi_ec_unblock_transactions(void)
@@ -481,10 +489,10 @@ void acpi_ec_unblock_transactions(void)
if (!ec)
return;
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
/* Allow transactions to be carried out again */
clear_bit(EC_FLAGS_BLOCKED, &ec->flags);
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
}
void acpi_ec_unblock_transactions_early(void)
@@ -536,9 +544,9 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
handler->handle = handle;
handler->func = func;
handler->data = data;
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
list_add(&handler->node, &ec->list);
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
return 0;
}
@@ -547,14 +555,14 @@ EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);
void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
{
struct acpi_ec_query_handler *handler, *tmp;
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
list_for_each_entry_safe(handler, tmp, &ec->list, node) {
if (query_bit == handler->query_bit) {
list_del(&handler->node);
kfree(handler);
}
}
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
}
EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
@@ -601,9 +609,9 @@ static void acpi_ec_gpe_query(void *ec_cxt)
struct acpi_ec *ec = ec_cxt;
if (!ec)
return;
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
acpi_ec_sync_query(ec);
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
}
static int ec_check_sci(struct acpi_ec *ec, u8 state)
@@ -622,10 +630,11 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
u32 gpe_number, void *data)
{
struct acpi_ec *ec = data;
+ u8 status = acpi_ec_read_status(ec);
- pr_debug(PREFIX "~~~> interrupt\n");
+ pr_debug(PREFIX "~~~> interrupt, status:0x%02x\n", status);
- advance_transaction(ec, acpi_ec_read_status(ec));
+ advance_transaction(ec, status);
if (ec_transaction_done(ec) &&
(acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) == 0) {
wake_up(&ec->wait);
@@ -691,10 +700,10 @@ static struct acpi_ec *make_acpi_ec(void)
if (!ec)
return NULL;
ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
- mutex_init(&ec->lock);
+ mutex_init(&ec->mutex);
init_waitqueue_head(&ec->wait);
INIT_LIST_HEAD(&ec->list);
- spin_lock_init(&ec->curr_lock);
+ spin_lock_init(&ec->lock);
return ec;
}
@@ -853,12 +862,12 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
ec = acpi_driver_data(device);
ec_remove_handlers(ec);
- mutex_lock(&ec->lock);
+ mutex_lock(&ec->mutex);
list_for_each_entry_safe(handler, tmp, &ec->list, node) {
list_del(&handler->node);
kfree(handler);
}
- mutex_unlock(&ec->lock);
+ mutex_unlock(&ec->mutex);
release_region(ec->data_addr, 1);
release_region(ec->command_addr, 1);
device->driver_data = NULL;
diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c
index 20a0f2c3ca3..b514e81e8cf 100644
--- a/drivers/acpi/hed.c
+++ b/drivers/acpi/hed.c
@@ -70,7 +70,7 @@ static int __devinit acpi_hed_add(struct acpi_device *device)
return 0;
}
-static int __devexit acpi_hed_remove(struct acpi_device *device, int type)
+static int acpi_hed_remove(struct acpi_device *device, int type)
{
hed_handle = NULL;
return 0;
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 57d41f6e144..3c407cdc1ec 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -58,11 +58,11 @@ struct acpi_ec {
unsigned long data_addr;
unsigned long global_lock;
unsigned long flags;
- struct mutex lock;
+ struct mutex mutex;
wait_queue_head_t wait;
struct list_head list;
struct transaction *curr;
- spinlock_t curr_lock;
+ spinlock_t lock;
};
extern struct acpi_ec *first_ec;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 9eaf708f588..6dc4a2b1e95 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -932,7 +932,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
* having a static work_struct.
*/
- dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
+ dpc = kzalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
if (!dpc)
return AE_NO_MEMORY;
@@ -944,17 +944,22 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
* because the hotplug code may call driver .remove() functions,
* which invoke flush_scheduled_work/acpi_os_wait_events_complete
* to flush these workqueues.
+ *
+ * To prevent lockdep from complaining unnecessarily, make sure that
+ * there is a different static lockdep key for each workqueue by using
+ * INIT_WORK() for each of them separately.
*/
- queue = hp ? kacpi_hotplug_wq :
- (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq);
- dpc->wait = hp ? 1 : 0;
-
- if (queue == kacpi_hotplug_wq)
+ if (hp) {
+ queue = kacpi_hotplug_wq;
+ dpc->wait = 1;
INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- else if (queue == kacpi_notify_wq)
+ } else if (type == OSL_NOTIFY_HANDLER) {
+ queue = kacpi_notify_wq;
INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- else
+ } else {
+ queue = kacpid_wq;
INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+ }
/*
* On some machines, a software-initiated SMI causes corruption unless
@@ -986,6 +991,7 @@ acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function,
{
return __acpi_os_execute(0, function, context, 1);
}
+EXPORT_SYMBOL(acpi_os_hotplug_execute);
void acpi_os_wait_events_complete(void)
{
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 1be25a590dc..23a03249013 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -459,19 +459,19 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
*/
if (gsi < 0) {
u32 dev_gsi;
- dev_warn(&dev->dev, "PCI INT %c: no GSI", pin_name(pin));
/* Interrupt Line values above 0xF are forbidden */
if (dev->irq > 0 && (dev->irq <= 0xF) &&
(acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) {
- printk(" - using ISA IRQ %d\n", dev->irq);
+ dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ %d\n",
+ pin_name(pin), dev->irq);
acpi_register_gsi(&dev->dev, dev_gsi,
ACPI_LEVEL_SENSITIVE,
ACPI_ACTIVE_LOW);
- return 0;
} else {
- printk("\n");
- return 0;
+ dev_warn(&dev->dev, "PCI INT %c: no GSI\n",
+ pin_name(pin));
}
+ return 0;
}
rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 40e38a06ba8..7db61b8fa11 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -473,7 +473,7 @@ int acpi_power_resource_register_device(struct device *dev, acpi_handle handle)
return ret;
no_power_resource:
- printk(KERN_DEBUG PREFIX "Invalid Power Resource to register!");
+ printk(KERN_DEBUG PREFIX "Invalid Power Resource to register!\n");
return -ENODEV;
}
EXPORT_SYMBOL_GPL(acpi_power_resource_register_device);
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 27adb090bb3..ef98796b382 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -362,16 +362,13 @@ acpi_system_write_wakeup_device(struct file *file,
struct list_head *node, *next;
char strbuf[5];
char str[5] = "";
- unsigned int len = count;
- if (len > 4)
- len = 4;
- if (len < 0)
- return -EFAULT;
+ if (count > 4)
+ count = 4;
- if (copy_from_user(strbuf, buffer, len))
+ if (copy_from_user(strbuf, buffer, count))
return -EFAULT;
- strbuf[len] = '\0';
+ strbuf[count] = '\0';
sscanf(strbuf, "%s", str);
mutex_lock(&acpi_device_lock);
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index bd4e5dca3ff..e83311bf1eb 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -44,6 +44,7 @@
#include <linux/moduleparam.h>
#include <linux/cpuidle.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
#include <asm/io.h>
#include <asm/cpu.h>
@@ -282,7 +283,9 @@ static int acpi_processor_get_info(struct acpi_device *device)
/* 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");
+ dev_err(&device->dev,
+ "Failed to evaluate processor object (0x%x)\n",
+ status);
return -ENODEV;
}
@@ -301,8 +304,9 @@ static int acpi_processor_get_info(struct acpi_device *device)
status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
NULL, &value);
if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Evaluating processor _UID [%#x]\n", status);
+ dev_err(&device->dev,
+ "Failed to evaluate processor _UID (0x%x)\n",
+ status);
return -ENODEV;
}
device_declaration = 1;
@@ -345,7 +349,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
if (!object.processor.pblk_address)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
else if (object.processor.pblk_length != 6)
- printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n",
+ dev_err(&device->dev, "Invalid PBLK length [%d]\n",
object.processor.pblk_length);
else {
pr->throttling.address = object.processor.pblk_address;
@@ -430,8 +434,8 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
* Initialize missing things
*/
if (pr->flags.need_hotplug_init) {
- printk(KERN_INFO "Will online and init hotplugged "
- "CPU: %d\n", pr->id);
+ pr_info("Will online and init hotplugged CPU: %d\n",
+ pr->id);
WARN(acpi_processor_start(pr), "Failed to start CPU:"
" %d\n", pr->id);
pr->flags.need_hotplug_init = 0;
@@ -492,14 +496,16 @@ static __ref int acpi_processor_start(struct acpi_processor *pr)
&pr->cdev->device.kobj,
"thermal_cooling");
if (result) {
- printk(KERN_ERR PREFIX "Create sysfs link\n");
+ dev_err(&device->dev,
+ "Failed to create sysfs link 'thermal_cooling'\n");
goto err_thermal_unregister;
}
result = sysfs_create_link(&pr->cdev->device.kobj,
&device->dev.kobj,
"device");
if (result) {
- printk(KERN_ERR PREFIX "Create sysfs link\n");
+ dev_err(&pr->cdev->device,
+ "Failed to create sysfs link 'device'\n");
goto err_remove_sysfs_thermal;
}
@@ -561,8 +567,9 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
*/
if (per_cpu(processor_device_array, pr->id) != NULL &&
per_cpu(processor_device_array, pr->id) != device) {
- printk(KERN_WARNING "BIOS reported wrong ACPI id "
- "for the processor\n");
+ dev_warn(&device->dev,
+ "BIOS reported wrong ACPI id %d for the processor\n",
+ pr->id);
result = -ENODEV;
goto err_free_cpumask;
}
@@ -695,8 +702,8 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
static void acpi_processor_hotplug_notify(acpi_handle handle,
u32 event, void *data)
{
- struct acpi_processor *pr;
struct acpi_device *device = NULL;
+ struct acpi_eject_event *ej_event = NULL;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
int result;
@@ -716,7 +723,7 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
result = acpi_processor_device_add(handle, &device);
if (result) {
- printk(KERN_ERR PREFIX "Unable to add the device\n");
+ acpi_handle_err(handle, "Unable to add the device\n");
break;
}
@@ -728,20 +735,29 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
"received ACPI_NOTIFY_EJECT_REQUEST\n"));
if (acpi_bus_get_device(handle, &device)) {
- printk(KERN_ERR PREFIX
- "Device don't exist, dropping EJECT\n");
+ acpi_handle_err(handle,
+ "Device don't exist, dropping EJECT\n");
break;
}
- pr = acpi_driver_data(device);
- if (!pr) {
- printk(KERN_ERR PREFIX
- "Driver data is NULL, dropping EJECT\n");
+ if (!acpi_driver_data(device)) {
+ acpi_handle_err(handle,
+ "Driver data is NULL, dropping EJECT\n");
break;
}
- /* REVISIT: update when eject is supported */
- ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
- break;
+ ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
+ if (!ej_event) {
+ acpi_handle_err(handle, "No memory, dropping EJECT\n");
+ break;
+ }
+
+ ej_event->handle = handle;
+ ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
+ acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
+ (void *)ej_event);
+
+ /* eject is performed asynchronously */
+ return;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -841,7 +857,7 @@ static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
* and do it when the CPU gets online the first time
* TBD: Cleanup above functions and try to do this more elegant.
*/
- printk(KERN_INFO "CPU %d got hotplugged\n", pr->id);
+ pr_info("CPU %d got hotplugged\n", pr->id);
pr->flags.need_hotplug_init = 1;
return AE_OK;
@@ -852,8 +868,22 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr)
if (cpu_online(pr->id))
cpu_down(pr->id);
+ get_online_cpus();
+ /*
+ * The cpu might become online again at this point. So we check whether
+ * the cpu has been onlined or not. If the cpu became online, it means
+ * that someone wants to use the cpu. So acpi_processor_handle_eject()
+ * returns -EAGAIN.
+ */
+ if (unlikely(cpu_online(pr->id))) {
+ put_online_cpus();
+ pr_warn("Failed to remove CPU %d, because other task "
+ "brought the CPU back online\n", pr->id);
+ return -EAGAIN;
+ }
arch_unregister_cpu(pr->id);
acpi_unmap_lsapic(pr->id);
+ put_online_cpus();
return (0);
}
#else
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 2976058e6e8..67a7fa638f7 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -108,6 +108,7 @@ void acpi_bus_hot_remove_device(void *context)
struct acpi_eject_event *ej_event = (struct acpi_eject_event *) context;
struct acpi_device *device;
acpi_handle handle = ej_event->handle;
+ acpi_handle temp;
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status = AE_OK;
@@ -128,13 +129,16 @@ void acpi_bus_hot_remove_device(void *context)
goto err_out;
}
+ /* device has been freed */
+ device = NULL;
+
/* power off device */
status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
printk(KERN_WARNING PREFIX
"Power-off device failed\n");
- if (device->flags.lockable) {
+ if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &temp))) {
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
@@ -168,6 +172,7 @@ err_out:
kfree(context);
return;
}
+EXPORT_SYMBOL(acpi_bus_hot_remove_device);
static ssize_t
acpi_eject_store(struct device *d, struct device_attribute *attr,
@@ -227,6 +232,25 @@ acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *bu
}
static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
+static ssize_t acpi_device_uid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+
+ return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id);
+}
+static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL);
+
+static ssize_t acpi_device_adr_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+
+ return sprintf(buf, "0x%08x\n",
+ (unsigned int)(acpi_dev->pnp.bus_address));
+}
+static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL);
+
static ssize_t
acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
struct acpi_device *acpi_dev = to_acpi_device(dev);
@@ -270,11 +294,21 @@ static ssize_t description_show(struct device *dev,
}
static DEVICE_ATTR(description, 0444, description_show, NULL);
+static ssize_t
+acpi_device_sun_show(struct device *dev, struct device_attribute *attr,
+ char *buf) {
+ struct acpi_device *acpi_dev = to_acpi_device(dev);
+
+ return sprintf(buf, "%lu\n", acpi_dev->pnp.sun);
+}
+static DEVICE_ATTR(sun, 0444, acpi_device_sun_show, NULL);
+
static int acpi_device_setup_files(struct acpi_device *dev)
{
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
acpi_status status;
acpi_handle temp;
+ unsigned long long sun;
int result = 0;
/*
@@ -311,6 +345,21 @@ static int acpi_device_setup_files(struct acpi_device *dev)
goto end;
}
+ if (dev->flags.bus_address)
+ result = device_create_file(&dev->dev, &dev_attr_adr);
+ if (dev->pnp.unique_id)
+ result = device_create_file(&dev->dev, &dev_attr_uid);
+
+ status = acpi_evaluate_integer(dev->handle, "_SUN", NULL, &sun);
+ if (ACPI_SUCCESS(status)) {
+ dev->pnp.sun = (unsigned long)sun;
+ result = device_create_file(&dev->dev, &dev_attr_sun);
+ if (result)
+ goto end;
+ } else {
+ dev->pnp.sun = (unsigned long)-1;
+ }
+
/*
* If device has _EJ0, 'eject' file is created that is used to trigger
* hot-removal function from userland.
@@ -342,6 +391,14 @@ static void acpi_device_remove_files(struct acpi_device *dev)
if (ACPI_SUCCESS(status))
device_remove_file(&dev->dev, &dev_attr_eject);
+ status = acpi_get_handle(dev->handle, "_SUN", &temp);
+ if (ACPI_SUCCESS(status))
+ device_remove_file(&dev->dev, &dev_attr_sun);
+
+ if (dev->pnp.unique_id)
+ device_remove_file(&dev->dev, &dev_attr_uid);
+ if (dev->flags.bus_address)
+ device_remove_file(&dev->dev, &dev_attr_adr);
device_remove_file(&dev->dev, &dev_attr_modalias);
device_remove_file(&dev->dev, &dev_attr_hid);
if (dev->handle)
@@ -418,6 +475,7 @@ static void acpi_device_release(struct device *dev)
struct acpi_device *acpi_dev = to_acpi_device(dev);
acpi_free_ids(acpi_dev);
+ kfree(acpi_dev->pnp.unique_id);
kfree(acpi_dev);
}
@@ -1061,11 +1119,6 @@ static int acpi_bus_get_flags(struct acpi_device *device)
device->flags.ejectable = 1;
}
- /* Presence of _LCK indicates 'lockable' */
- status = acpi_get_handle(device->handle, "_LCK", &temp);
- if (ACPI_SUCCESS(status))
- device->flags.lockable = 1;
-
/* Power resources cannot be power manageable. */
if (device->device_type == ACPI_BUS_TYPE_POWER)
return 0;
@@ -1260,6 +1313,9 @@ static void acpi_device_set_id(struct acpi_device *device)
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
}
+ if (info->valid & ACPI_VALID_UID)
+ device->pnp.unique_id = kstrdup(info->unique_id.string,
+ GFP_KERNEL);
kfree(info);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 13a285dffac..1e25319164f 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -103,6 +103,21 @@ void __init acpi_nvs_nosave(void)
}
/*
+ * The ACPI specification wants us to save NVS memory regions during hibernation
+ * but says nothing about saving NVS during S3. Not all versions of Windows
+ * save NVS on S3 suspend either, and it is clear that not all systems need
+ * NVS to be saved at S3 time. To improve suspend/resume time, allow the
+ * user to disable saving NVS on S3 if their system does not require it, but
+ * continue to save/restore NVS for S4 as specified.
+ */
+static bool nvs_nosave_s3;
+
+void __init acpi_nvs_nosave_s3(void)
+{
+ nvs_nosave_s3 = true;
+}
+
+/*
* ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
* user to request that behavior by using the 'acpi_old_suspend_ordering'
* kernel command line option that causes the following variable to be set.
@@ -248,7 +263,7 @@ static int acpi_suspend_begin(suspend_state_t pm_state)
u32 acpi_state = acpi_suspend_states[pm_state];
int error = 0;
- error = nvs_nosave ? 0 : suspend_nvs_alloc();
+ error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
if (error)
return error;
@@ -524,6 +539,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
},
{
.callback = init_nvs_nosave,
+ .ident = "Sony Vaio VPCEB1S1E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1S1E"),
+ },
+ },
+ {
+ .callback = init_nvs_nosave,
.ident = "Sony Vaio VGN-FW520F",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 804204d4199..6e8cc16b54c 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -984,6 +984,38 @@ static void acpi_thermal_notify(struct acpi_device *device, u32 event)
}
}
+/*
+ * On some platforms, the AML code has dependency about
+ * the evaluating order of _TMP and _CRT/_HOT/_PSV/_ACx.
+ * 1. On HP Pavilion G4-1016tx, _TMP must be invoked after
+ * /_CRT/_HOT/_PSV/_ACx, or else system will be power off.
+ * 2. On HP Compaq 6715b/6715s, the return value of _PSV is 0
+ * if _TMP has never been evaluated.
+ *
+ * As this dependency is totally transparent to OS, evaluate
+ * all of them once, in the order of _CRT/_HOT/_PSV/_ACx,
+ * _TMP, before they are actually used.
+ */
+static void acpi_thermal_aml_dependency_fix(struct acpi_thermal *tz)
+{
+ acpi_handle handle = tz->device->handle;
+ unsigned long long value;
+ int i;
+
+ acpi_evaluate_integer(handle, "_CRT", NULL, &value);
+ acpi_evaluate_integer(handle, "_HOT", NULL, &value);
+ acpi_evaluate_integer(handle, "_PSV", NULL, &value);
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+ char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
+ acpi_status status;
+
+ status = acpi_evaluate_integer(handle, name, NULL, &value);
+ if (status == AE_NOT_FOUND)
+ break;
+ }
+ acpi_evaluate_integer(handle, "_TMP", NULL, &value);
+}
+
static int acpi_thermal_get_info(struct acpi_thermal *tz)
{
int result = 0;
@@ -992,6 +1024,8 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
if (!tz)
return -EINVAL;
+ acpi_thermal_aml_dependency_fix(tz);
+
/* Get trip points [_CRT, _PSV, etc.] (required) */
result = acpi_thermal_get_trip_points(tz);
if (result)
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 462f7e30036..74437130431 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -28,6 +28,8 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/hardirq.h>
+#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -457,3 +459,39 @@ acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
#endif
}
EXPORT_SYMBOL(acpi_evaluate_hotplug_ost);
+
+/**
+ * acpi_handle_printk: Print message with ACPI prefix and object path
+ *
+ * This function is called through acpi_handle_<level> macros and prints
+ * a message with ACPI prefix and object path. This function acquires
+ * the global namespace mutex to obtain an object path. In interrupt
+ * context, it shows the object path as <n/a>.
+ */
+void
+acpi_handle_printk(const char *level, acpi_handle handle, const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ struct acpi_buffer buffer = {
+ .length = ACPI_ALLOCATE_BUFFER,
+ .pointer = NULL
+ };
+ const char *path;
+
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ if (in_interrupt() ||
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer) != AE_OK)
+ path = "<n/a>";
+ else
+ path = buffer.pointer;
+
+ printk("%sACPI: %s: %pV", level, path, &vaf);
+
+ va_end(args);
+ kfree(buffer.pointer);
+}
+EXPORT_SYMBOL(acpi_handle_printk);
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index c4ed4c2389c..7ced5dc20dd 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -144,12 +144,11 @@ struct acpi_device_flags {
u32 bus_address:1;
u32 removable:1;
u32 ejectable:1;
- u32 lockable:1;
u32 suprise_removal_ok:1;
u32 power_manageable:1;
u32 performance_manageable:1;
u32 eject_pending:1;
- u32 reserved:23;
+ u32 reserved:24;
};
/* File System */
@@ -180,6 +179,7 @@ struct acpi_device_pnp {
acpi_device_name device_name; /* Driver-determined */
acpi_device_class device_class; /* " */
union acpi_object *str_obj; /* unicode string for _STR method */
+ unsigned long sun; /* _SUN */
};
#define acpi_device_bid(d) ((d)->pnp.bus_id)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 3574e4a2bf1..0f8022baf3f 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -279,10 +279,14 @@ int acpi_check_region(resource_size_t start, resource_size_t n,
int acpi_resources_are_enforced(void);
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_HIBERNATION
void __init acpi_no_s4_hw_signature(void);
+#endif
+
+#ifdef CONFIG_PM_SLEEP
void __init acpi_old_suspend_ordering(void);
void __init acpi_nvs_nosave(void);
+void __init acpi_nvs_nosave_s3(void);
#endif /* CONFIG_PM_SLEEP */
struct acpi_osc_context {
@@ -516,4 +520,47 @@ static inline int acpi_dev_pm_attach(struct device *dev, bool power_on)
static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {}
#endif
+#ifdef CONFIG_ACPI
+__printf(3, 4)
+void acpi_handle_printk(const char *level, acpi_handle handle,
+ const char *fmt, ...);
+#else /* !CONFIG_ACPI */
+static inline __printf(3, 4) void
+acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
+#endif /* !CONFIG_ACPI */
+
+/*
+ * acpi_handle_<level>: Print message with ACPI prefix and object path
+ *
+ * These interfaces acquire the global namespace mutex to obtain an object
+ * path. In interrupt context, it shows the object path as <n/a>.
+ */
+#define acpi_handle_emerg(handle, fmt, ...) \
+ acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_alert(handle, fmt, ...) \
+ acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_crit(handle, fmt, ...) \
+ acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_err(handle, fmt, ...) \
+ acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_warn(handle, fmt, ...) \
+ acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_notice(handle, fmt, ...) \
+ acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__)
+#define acpi_handle_info(handle, fmt, ...) \
+ acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__)
+
+/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */
+#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
+#define acpi_handle_debug(handle, fmt, ...) \
+ acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__)
+#else
+#define acpi_handle_debug(handle, fmt, ...) \
+({ \
+ if (0) \
+ acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \
+ 0; \
+})
+#endif
+
#endif /*_LINUX_ACPI_H*/
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 42bd331ee0a..f45657f1eb8 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -348,11 +348,13 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
unsigned long mod = tasks_frozen ? CPU_TASKS_FROZEN : 0;
struct task_struct *idle;
- if (cpu_online(cpu) || !cpu_present(cpu))
- return -EINVAL;
-
cpu_hotplug_begin();
+ if (cpu_online(cpu) || !cpu_present(cpu)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
idle = idle_thread_get(cpu);
if (IS_ERR(idle)) {
ret = PTR_ERR(idle);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 10:47:45 +0000