ACPI: Remove acpi_start_single_object() and acpi_bus_start()

The ACPI PCI root bridge driver was the only ACPI driver implementing
the .start() callback, which isn't used by any ACPI drivers any more
now.

For this reason, acpi_start_single_object() has no purpose any more,
so remove it and all references to it.  Also remove
acpi_bus_start_device(), whose only purpose was to call
acpi_start_single_object().

Moreover, since after the removal of acpi_bus_start_device() the
only purpose of acpi_bus_start() remains to call
acpi_update_all_gpes(), move that into acpi_bus_add() and drop
acpi_bus_start() too, remove its header from acpi_bus.h and
update all of its former users accordingly.

This change was previously proposed in a different from by
Yinghai Lu.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Toshi Kani <toshi.kani@hp.com>

2 files changed, 1 insertions, 5 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 3d6d4fd1e3c5..7e2bad4c2fcc 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -759,7 +759,6 @@ static int acpiphp_bus_add(struct acpiphp_func *func)
                         -ret_val);
                 goto acpiphp_bus_add_out;
         }
-        ret_val = acpi_bus_start(device);
 
 acpiphp_bus_add_out:
         return ret_val;
@@ -1148,8 +1147,7 @@ static void handle_bridge_insertion(acpi_handle handle, u32 type)
                 err("cannot add bridge to acpi list\n");
                 return;
         }
-        if (!acpiphp_configure_bridge(handle) &&
-                !acpi_bus_start(device))
+        if (!acpiphp_configure_bridge(handle))
                 add_bridge(handle);
         else
                 err("cannot configure and start bridge\n");
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index f64ca92253da..20c960d5317d 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -457,8 +457,6 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
                                                ret, (int)(adr>>16),
                                                (int)(adr&0xffff));
                                         /* try to continue on */
-                                } else {
-                                        acpi_bus_start(device);
                                 }
                         }
                 }