ACPI: Introduce acpi_unload_parent_table() usages in Linux kernel

ACPICA has implemented acpi_unload_parent_table() which can exactly replace
the acpi_get_id()/acpi_unload_table_id() implemented in Linux kernel.  The
acpi_unload_parent_table() has been unit tested in ACPICA simulation
environment.

This patch can also help to reduce the source code differences between
Linux and ACPICA.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index bada20999870..c32fb786d48e 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -475,7 +475,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
         struct slot *slot = bss_hotplug_slot->private;
         struct pci_dev *dev, *temp;
         int rc;
-        acpi_owner_id ssdt_id = 0;
+        acpi_handle ssdt_hdl = NULL;
 
         /* Acquire update access to the bus */
         mutex_lock(&sn_hotplug_mutex);
@@ -522,7 +522,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
                         if (ACPI_SUCCESS(ret) &&
                             (adr>>16) == (slot->device_num + 1)) {
                                 /* retain the owner id */
-                                acpi_get_id(chandle, &ssdt_id);
+                                ssdt_hdl = chandle;
 
                                 ret = acpi_bus_get_device(chandle,
                                                           &device);
@@ -547,12 +547,13 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
         pci_unlock_rescan_remove();
 
         /* Remove the SSDT for the slot from the ACPI namespace */
-        if (SN_ACPI_BASE_SUPPORT() && ssdt_id) {
+        if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) {
                 acpi_status ret;
-                ret = acpi_unload_table_id(ssdt_id);
+                ret = acpi_unload_parent_table(ssdt_hdl);
                 if (ACPI_FAILURE(ret)) {
-                        printk(KERN_ERR "%s: acpi_unload_table_id failed (0x%x) for id %d\n",
-                               __func__, ret, ssdt_id);
+                        acpi_handle_err(ssdt_hdl,
+                                        "%s: acpi_unload_parent_table failed (0x%x)\n",
+                                        __func__, ret);
                         /* try to continue on */
                 }
         }