Pull bugzilla-8842 into release branch
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 06db892..975f029 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -163,6 +163,8 @@
acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA
Format: <irq>,<irq>...
+ acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT
+
acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS
Format: To spoof as Windows 98: ="Microsoft Windows"
diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index 6711fbc..eb2f598 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -105,10 +105,10 @@
as a driver attribute (see below).
Sysfs driver attributes are on the driver's sysfs attribute space,
-for 2.6.20 this is /sys/bus/platform/drivers/thinkpad-acpi/.
+for 2.6.20 this is /sys/bus/platform/drivers/thinkpad_acpi/.
Sysfs device attributes are on the driver's sysfs attribute space,
-for 2.6.20 this is /sys/devices/platform/thinkpad-acpi/.
+for 2.6.20 this is /sys/devices/platform/thinkpad_acpi/.
Driver version
--------------
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index 9c4bd22..86fd142 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -1192,6 +1192,7 @@
break;
default:
kfree(model);
+ model = NULL;
break;
}
}
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 8165103..d7b499f 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -113,7 +113,7 @@
acpi_string oem_info;
};
-enum acpi_battery_files{
+enum acpi_battery_files {
ACPI_BATTERY_INFO = 0,
ACPI_BATTERY_STATE,
ACPI_BATTERY_ALARM,
@@ -129,13 +129,14 @@
};
struct acpi_battery {
- struct mutex mutex;
struct acpi_device *device;
struct acpi_battery_flags flags;
struct acpi_buffer bif_data;
struct acpi_buffer bst_data;
+ struct mutex lock;
unsigned long alarm;
unsigned long update_time[ACPI_BATTERY_NUMFILES];
+
};
inline int acpi_battery_present(struct acpi_battery *battery)
@@ -235,10 +236,10 @@
return 0;
/* Evaluate _BIF */
-
- status =
- acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL,
- &buffer);
+ mutex_lock(&battery->lock);
+ status = acpi_evaluate_object(acpi_battery_handle(battery), "_BIF",
+ NULL, &buffer);
+ mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
return -ENODEV;
@@ -285,10 +286,10 @@
return 0;
/* Evaluate _BST */
-
- status =
- acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL,
- &buffer);
+ mutex_lock(&battery->lock);
+ status = acpi_evaluate_object(acpi_battery_handle(battery), "_BST",
+ NULL, &buffer);
+ mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
return -ENODEV;
@@ -336,9 +337,10 @@
arg0.integer.value = alarm;
- status =
- acpi_evaluate_object(acpi_battery_handle(battery), "_BTP",
+ mutex_lock(&battery->lock);
+ status = acpi_evaluate_object(acpi_battery_handle(battery), "_BTP",
&arg_list, NULL);
+ mutex_unlock(&battery->lock);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -658,8 +660,6 @@
if (!battery || (count > sizeof(alarm_string) - 1))
return -EINVAL;
- mutex_lock(&battery->mutex);
-
result = acpi_battery_update(battery, 1, &update_result);
if (result) {
result = -ENODEV;
@@ -688,9 +688,7 @@
acpi_battery_check_result(battery, result);
if (!result)
- result = count;
-
- mutex_unlock(&battery->mutex);
+ return count;
return result;
}
@@ -714,8 +712,6 @@
int update_result = ACPI_BATTERY_NONE_UPDATE;
int update = 0;
- mutex_lock(&battery->mutex);
-
update = (get_seconds() - battery->update_time[fid] >= update_time);
update = (update | battery->flags.update[fid]);
@@ -733,7 +729,6 @@
result = acpi_read_funcs[fid].print(seq, result);
acpi_battery_check_result(battery, result);
battery->flags.update[fid] = result;
- mutex_unlock(&battery->mutex);
return result;
}
@@ -897,10 +892,7 @@
if (!battery)
return -ENOMEM;
- mutex_init(&battery->mutex);
-
- mutex_lock(&battery->mutex);
-
+ mutex_init(&battery->lock);
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
@@ -936,7 +928,6 @@
kfree(battery);
}
- mutex_unlock(&battery->mutex);
return result;
}
@@ -951,8 +942,6 @@
battery = acpi_driver_data(device);
- mutex_lock(&battery->mutex);
-
status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY,
acpi_battery_notify);
@@ -963,9 +952,7 @@
kfree(battery->bst_data.pointer);
- mutex_unlock(&battery->mutex);
-
- mutex_destroy(&battery->mutex);
+ mutex_destroy(&battery->lock);
kfree(battery);
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 5b302c4..a9e3331 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -52,6 +52,8 @@
/* Local prototypes */
static acpi_status acpi_tb_load_namespace(void);
+static int no_auto_ssdt;
+
/*******************************************************************************
*
* FUNCTION: acpi_allocate_root_table
@@ -536,6 +538,10 @@
ACPI_INFO((AE_INFO, "Table DSDT replaced by host OS"));
acpi_tb_print_table_header(0, table);
+
+ if (no_auto_ssdt == 0) {
+ printk(KERN_WARNING "ACPI: DSDT override uses original SSDTs unless \"acpi_no_auto_ssdt\"");
+ }
}
status =
@@ -577,6 +583,11 @@
continue;
}
+ if (no_auto_ssdt) {
+ printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+ continue;
+ }
+
/* Ignore errors while loading tables, get as many as possible */
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
@@ -622,3 +633,15 @@
}
ACPI_EXPORT_SYMBOL(acpi_load_tables)
+
+
+static int __init acpi_no_auto_ssdt_setup(char *s) {
+
+ printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
+
+ no_auto_ssdt = 1;
+
+ return 1;
+}
+
+__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 73037a4..aeec67e 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -1147,10 +1147,15 @@
return 0;
}
+const static struct acpi_device_id sonypi_device_ids[] = {
+ {"SNY6001", 0},
+ {"", 0},
+};
+
static struct acpi_driver sonypi_acpi_driver = {
.name = "sonypi",
.class = "hkey",
- .ids = "SNY6001",
+ .ids = sonypi_device_ids,
.ops = {
.add = sonypi_acpi_add,
.remove = sonypi_acpi_remove,
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index aaaa61e..518d5d3 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -200,14 +200,22 @@
config THINKPAD_ACPI_INPUT_ENABLED
bool "Enable input layer support by default"
depends on THINKPAD_ACPI
- default y
+ default n
---help---
- Enables hot key handling over the input layer by default. If unset,
- the driver does not enable any hot key handling by default, and also
- starts up with a mostly empty keymap.
+ This option enables thinkpad-acpi hot key handling over the input
+ layer at driver load time. When it is unset, the driver does not
+ enable hot key handling by default, and also starts up with a mostly
+ empty keymap.
- If you are not sure, say Y here. Say N to retain the deprecated
- behavior of ibm-acpi, and thinkpad-acpi for kernels up to 2.6.21.
+ This option should be enabled if you have a new enough HAL or other
+ userspace support that properly handles the thinkpad-acpi event
+ device. It auto-tunes the hot key support to those reported by the
+ firmware and enables it automatically.
+
+ If unsure, say N here to retain the old behaviour of ibm-acpi, and
+ thinkpad-acpi up to kernel 2.6.21: userspace will have to enable and
+ set up the thinkpad-acpi hot key handling using the sysfs interace
+ after loading the driver.
endif # MISC_DEVICES
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 14ee06c..91da688 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -845,7 +845,7 @@
};
/* SNC-only model map */
-struct dmi_system_id sony_nc_ids[] = {
+static struct dmi_system_id sony_nc_ids[] = {
{
.ident = "Sony Vaio FE Series",
.callback = sony_nc_C_enable,
@@ -942,6 +942,11 @@
}
}
+ /* set the last requested brightness level */
+ if (sony_backlight_device &&
+ !sony_backlight_update_status(sony_backlight_device))
+ printk(KERN_WARNING DRV_PFX "unable to restore brightness level");
+
/* re-initialize models with specific requirements */
dmi_check_system(sony_nc_ids);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index fa80f35..f6cd34a 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -4668,12 +4668,15 @@
thinkpad_acpi_module_exit();
return ret;
}
+ tp_features.platform_drv_registered = 1;
+
ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
if (ret) {
printk(IBM_ERR "unable to create sysfs driver attributes\n");
thinkpad_acpi_module_exit();
return ret;
}
+ tp_features.platform_drv_attrs_registered = 1;
/* Device initialization */
@@ -4756,8 +4759,11 @@
if (tpacpi_pdev)
platform_device_unregister(tpacpi_pdev);
- tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
- platform_driver_unregister(&tpacpi_pdriver);
+ if (tp_features.platform_drv_attrs_registered)
+ tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
+
+ if (tp_features.platform_drv_registered)
+ platform_driver_unregister(&tpacpi_pdriver);
if (proc_dir)
remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h
index 88af089..eee8809 100644
--- a/drivers/misc/thinkpad_acpi.h
+++ b/drivers/misc/thinkpad_acpi.h
@@ -246,6 +246,8 @@
u16 wan:1;
u16 fan_ctrl_status_undef:1;
u16 input_device_registered:1;
+ u16 platform_drv_registered:1;
+ u16 platform_drv_attrs_registered:1;
} tp_features;
struct thinkpad_id_data {
