Update 2.6.36 to 2.6.36.4wip-dissipation2-jerickso

5 files changed, 64 insertions, 5 deletions

diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index d555b374e314..6b0b5d08d97a 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -300,10 +300,25 @@ acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state,
                          * we must enter this object into the namespace.  The created
                          * object is temporary and will be deleted upon completion of
                          * the execution of this method.
+                         *
+                         * Note 10/2010: Except for the Scope() op. This opcode does
+                         * not actually create a new object, it refers to an existing
+                         * object. However, for Scope(), we want to indeed open a
+                         * new scope.
                          */
-                        status = acpi_ds_load2_begin_op(walk_state, NULL);
+                        if (op->common.aml_opcode != AML_SCOPE_OP) {
+                                status =
+                                    acpi_ds_load2_begin_op(walk_state, NULL);
+                        } else {
+                                status =
+                                    acpi_ds_scope_stack_push(op->named.node,
+                                                             op->named.node->
+                                                             type, walk_state);
+                                if (ACPI_FAILURE(status)) {
+                                        return_ACPI_STATUS(status);
+                                }
+                        }
                 }
-
                 break;
 
         case AML_CLASS_EXECUTE:
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 98417201e9ce..4c0a0a37d46e 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -98,6 +98,7 @@ enum {
          * due to bad math.
          */
         ACPI_BATTERY_QUIRK_SIGNED16_CURRENT,
+        ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY,
 };
 
 struct acpi_battery {
@@ -412,6 +413,8 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
                 result = extract_package(battery, buffer.pointer,
                                 info_offsets, ARRAY_SIZE(info_offsets));
         kfree(buffer.pointer);
+        if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
+                battery->full_charge_capacity = battery->design_capacity;
         return result;
 }
 
@@ -448,6 +451,10 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
             battery->rate_now != -1)
                 battery->rate_now = abs((s16)battery->rate_now);
 
+        if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)
+            && battery->capacity_now >= 0 && battery->capacity_now <= 100)
+                battery->capacity_now = (battery->capacity_now *
+                                battery->full_charge_capacity) / 100;
         return result;
 }
 
@@ -561,6 +568,33 @@ static void acpi_battery_quirks(struct acpi_battery *battery)
         }
 }
 
+/*
+ * According to the ACPI spec, some kinds of primary batteries can
+ * report percentage battery remaining capacity directly to OS.
+ * In this case, it reports the Last Full Charged Capacity == 100
+ * and BatteryPresentRate == 0xFFFFFFFF.
+ *
+ * Now we found some battery reports percentage remaining capacity
+ * even if it's rechargeable.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=15979
+ *
+ * Handle this correctly so that they won't break userspace.
+ */
+static void acpi_battery_quirks2(struct acpi_battery *battery)
+{
+        if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
+                return ;
+
+        if (battery->full_charge_capacity == 100 &&
+            battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN &&
+            battery->capacity_now >=0 && battery->capacity_now <= 100) {
+                set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags);
+                battery->full_charge_capacity = battery->design_capacity;
+                battery->capacity_now = (battery->capacity_now *
+                                battery->full_charge_capacity) / 100;
+        }
+}
+
 static int acpi_battery_update(struct acpi_battery *battery)
 {
         int result, old_present = acpi_battery_present(battery);
@@ -586,7 +620,9 @@ static int acpi_battery_update(struct acpi_battery *battery)
         if (!battery->bat.dev)
                 sysfs_add_battery(battery);
 #endif
-        return acpi_battery_get_state(battery);
+        result = acpi_battery_get_state(battery);
+        acpi_battery_quirks2(battery);
+        return result;
 }
 
 /* --------------------------------------------------------------------------
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 310e3b9749cb..d68bd61072bb 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -935,6 +935,12 @@ static int __init acpi_bus_init(void)
                 goto error1;
         }
 
+        /*
+         * _PDC control method may load dynamic SSDT tables,
+         * and we need to install the table handler before that.
+         */
+        acpi_sysfs_init();
+
         acpi_early_processor_set_pdc();
 
         /*
@@ -1026,7 +1032,6 @@ static int __init acpi_init(void)
         acpi_scan_init();
         acpi_ec_init();
         acpi_power_init();
-        acpi_sysfs_init();
         acpi_debugfs_init();
         acpi_sleep_proc_init();
         acpi_wakeup_device_init();
diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c
index 7de27d49c4b9..74c4a398604a 100644
--- a/drivers/acpi/debugfs.c
+++ b/drivers/acpi/debugfs.c
@@ -79,7 +79,7 @@ int __init acpi_debugfs_init(void)
         if (!acpi_dir)
                 goto err;
 
-        cm_dentry = debugfs_create_file("custom_method", S_IWUGO,
+        cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
                                         acpi_dir, NULL, &cm_fops);
         if (!cm_dentry)
                 goto err;
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index f31291ba94d0..7bff18b33089 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -929,6 +929,9 @@ static struct dmi_system_id __initdata ec_dmi_table[] = {
         ec_flag_msi, "MSI hardware", {
         DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-Star")}, NULL},
         {
+        ec_flag_msi, "MSI hardware", {
+        DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR")}, NULL},
+        {
         ec_validate_ecdt, "ASUS hardware", {
         DMI_MATCH(DMI_BIOS_VENDOR, "ASUS") }, NULL},
         {},