ACPI / hotplug / PCI: Drop flags field from struct acpiphp_bridge

The only bridge flag used by the ACPI-based PCI hotplug (ACPIPHP)
code is BRIDGE_HAS_EJ0, but it is only used by the event handling
function hotplug_event() and if that flag is set, the corresponding
function flag FUNC_HAS_EJ0 is set as well, so that bridge flag is
redundant.

For this reason, drop BRIDGE_HAS_EJ0 and all code referring to it
and since it is the only bridge flag defined, drop the flags field
from struct acpiphp_bridge entirely.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 4f10aec..990fbfd 100644 (file)
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -83,8 +83,6 @@ struct acpiphp_bridge {
 
        int nr_slots;
 
-       u32 flags;
-
        /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
        struct pci_bus *pci_bus;
 
@@ -154,9 +152,6 @@ struct acpiphp_attention_info
 /* ACPI _STA method value (ignore bit 4; battery present) */
 #define ACPI_STA_ALL                   (0x0000000f)
 
-/* bridge flags */
-#define BRIDGE_HAS_EJ0         (0x00000001)
-
 /* slot flags */
 
 #define SLOT_POWEREDON         (0x00000001)

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index a251071..5d79175 100644 (file)
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -986,9 +986,6 @@ static void hotplug_event(acpi_handle handle, u32 type, void *data)
        case ACPI_NOTIFY_EJECT_REQUEST:
                /* request device eject */
                dbg("%s: Device eject notify on %s\n", __func__, objname);
-               if (bridge && !(bridge->flags & BRIDGE_HAS_EJ0))
-                       break;
-
                if (!(acpiphp_disable_slot(func->slot)))
                        acpiphp_eject_slot(func->slot);
 
@@ -1125,12 +1122,6 @@ void acpiphp_enumerate_slots(struct pci_bus *bus)
                mutex_unlock(&acpiphp_context_lock);
        }
 
-       status = acpi_get_handle(bridge->handle, "_EJ0", &handle);
-       if (ACPI_SUCCESS(status)) {
-               dbg("found ejectable p2p bridge\n");
-               bridge->flags |= BRIDGE_HAS_EJ0;
-       }
-
        /* must be added to the list prior to calling register_slot */
        mutex_lock(&bridge_mutex);
        list_add(&bridge->list, &bridge_list);