7 files changed, 90 insertions, 10 deletions

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 7a0f4aa4fa1e..9a62224cc278 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -38,6 +38,9 @@
 
 #define _COMPONENT              ACPI_MEMORY_DEVICE_COMPONENT
 
+#undef PREFIX
+#define         PREFIX          "ACPI:memory_hp:"
+
 ACPI_MODULE_NAME("acpi_memhotplug");
 MODULE_AUTHOR("Naveen B S <naveen.b.s@intel.com>");
 MODULE_DESCRIPTION("Hotplug Mem Driver");
@@ -153,6 +156,7 @@ acpi_memory_get_device(acpi_handle handle,
         acpi_handle phandle;
         struct acpi_device *device = NULL;
         struct acpi_device *pdevice = NULL;
+        int result;
 
 
         if (!acpi_bus_get_device(handle, &device) && device)
@@ -165,9 +169,9 @@ acpi_memory_get_device(acpi_handle handle,
         }
 
         /* Get the parent device */
-        status = acpi_bus_get_device(phandle, &pdevice);
-        if (ACPI_FAILURE(status)) {
-                ACPI_EXCEPTION((AE_INFO, status, "Cannot get acpi bus device"));
+        result = acpi_bus_get_device(phandle, &pdevice);
+        if (result) {
+                printk(KERN_WARNING PREFIX "Cannot get acpi bus device");
                 return -EINVAL;
         }
 
@@ -175,9 +179,9 @@ acpi_memory_get_device(acpi_handle handle,
          * Now add the notified device.  This creates the acpi_device
          * and invokes .add function
          */
-        status = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
-        if (ACPI_FAILURE(status)) {
-                ACPI_EXCEPTION((AE_INFO, status, "Cannot add acpi bus"));
+        result = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
+        if (result) {
+                printk(KERN_WARNING PREFIX "Cannot add acpi bus");
                 return -EINVAL;
         }
 
@@ -238,7 +242,12 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
                         num_enabled++;
                         continue;
                 }
-
+                /*
+                 * If the memory block size is zero, please ignore it.
+                 * Don't try to do the following memory hotplug flowchart.
+                 */
+                if (!info->length)
+                        continue;
                 if (node < 0)
                         node = memory_add_physaddr_to_nid(info->start_addr);
 
@@ -253,8 +262,15 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
                 mem_device->state = MEMORY_INVALID_STATE;
                 return -EINVAL;
         }
-
-        return result;
+        /*
+         * Sometimes the memory device will contain several memory blocks.
+         * When one memory block is hot-added to the system memory, it will
+         * be regarded as a success.
+         * Otherwise if the last memory block can't be hot-added to the system
+         * memory, it will be failure and the memory device can't be bound with
+         * driver.
+         */
+        return 0;
 }
 
 static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 544dcf834922..eb6f038b03d9 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -97,6 +97,7 @@
 #define AOPOBJ_OBJECT_INITIALIZED   0x08
 #define AOPOBJ_SETUP_COMPLETE       0x10
 #define AOPOBJ_SINGLE_DATUM         0x20
+#define AOPOBJ_INVALID              0x40        /* Used if host OS won't allow an op_region address */
 
 /******************************************************************************
  *
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 584d766e6f12..b79978f7bc71 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -397,6 +397,30 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
         status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
                                            extra_desc->extra.aml_length,
                                            extra_desc->extra.aml_start);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* Validate the region address/length via the host OS */
+
+        status = acpi_os_validate_address(obj_desc->region.space_id,
+                                          obj_desc->region.address,
+                                          (acpi_size) obj_desc->region.length,
+                                          acpi_ut_get_node_name(node));
+
+        if (ACPI_FAILURE(status)) {
+                /*
+                 * Invalid address/length. We will emit an error message and mark
+                 * the region as invalid, so that it will cause an additional error if
+                 * it is ever used. Then return AE_OK.
+                 */
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "During address validation of OpRegion [%4.4s]",
+                                node->name.ascii));
+                obj_desc->common.flags |= AOPOBJ_INVALID;
+                status = AE_OK;
+        }
+
         return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index d4075b821021..6687be167f5f 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -113,6 +113,12 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
                 }
         }
 
+        /* Exit if Address/Length have been disallowed by the host OS */
+
+        if (rgn_desc->common.flags & AOPOBJ_INVALID) {
+                return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
+        }
+
         /*
          * Exit now for SMBus address space, it has a non-linear address space
          * and the request cannot be directly validated
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 71670719d61a..5691f165a952 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -189,11 +189,36 @@ acpi_status __init acpi_os_initialize(void)
         return AE_OK;
 }
 
+static void bind_to_cpu0(struct work_struct *work)
+{
+        set_cpus_allowed(current, cpumask_of_cpu(0));
+        kfree(work);
+}
+
+static void bind_workqueue(struct workqueue_struct *wq)
+{
+        struct work_struct *work;
+
+        work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
+        INIT_WORK(work, bind_to_cpu0);
+        queue_work(wq, work);
+}
+
 acpi_status acpi_os_initialize1(void)
 {
+        /*
+         * On some machines, a software-initiated SMI causes corruption unless
+         * the SMI runs on CPU 0.  An SMI can be initiated by any AML, but
+         * typically it's done in GPE-related methods that are run via
+         * workqueues, so we can avoid the known corruption cases by binding
+         * the workqueues to CPU 0.
+         */
         kacpid_wq = create_singlethread_workqueue("kacpid");
+        bind_workqueue(kacpid_wq);
         kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
+        bind_workqueue(kacpi_notify_wq);
         kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
+        bind_workqueue(kacpi_hotplug_wq);
         BUG_ON(!kacpid_wq);
         BUG_ON(!kacpi_notify_wq);
         BUG_ON(!kacpi_hotplug_wq);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 01574a066534..42159a28f433 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -397,6 +397,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
                 },
         },
         {
+        .callback = init_set_sci_en_on_resume,
+        .ident = "Hewlett-Packard HP G7000 Notebook PC",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"),
+                },
+        },
+        {
         .callback = init_old_suspend_ordering,
         .ident = "Panasonic CF51-2L",
         .matches = {
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 0944daec064f..9c61ab2177cf 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -121,7 +121,7 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
         table_attr->attr.size = 0;
         table_attr->attr.read = acpi_table_show;
         table_attr->attr.attr.name = table_attr->name;
-        table_attr->attr.attr.mode = 0444;
+        table_attr->attr.attr.mode = 0400;
 
         return;
 }