ACPI / hotplug / PCI: Consolidate slot disabling and ejecting
Both acpiphp_disable_slot() and acpiphp_eject_slot() are always
called together so instead of calling each separately we can
consolidate them into one function acpiphp_disable_and_eject_slot()
that does both (but it will return success on _EJ0 failures that
were ignored in the majority of call sites anyway).
[rjw: Rebased plus minor tweaks]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index f131512..6db790e 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -765,27 +765,6 @@
}
/**
- * acpiphp_eject_slot - physically eject the slot
- * @slot: ACPI PHP slot
- */
-int acpiphp_eject_slot(struct acpiphp_slot *slot)
-{
- struct acpiphp_func *func;
-
- list_for_each_entry(func, &slot->funcs, sibling) {
- /* We don't want to call _EJ0 on non-existing functions. */
- if (!(func->flags & FUNC_HAS_EJ0))
- continue;
-
- if (ACPI_FAILURE(acpi_evaluate_ej0(func_to_handle(func))))
- return -1;
- else
- break;
- }
- return 0;
-}
-
-/**
* acpiphp_check_bridge - re-enumerate devices
* @bridge: where to begin re-enumeration
*
@@ -805,13 +784,11 @@
if (slot->flags & SLOT_ENABLED) {
if (status == ACPI_STA_ALL)
continue;
- retval = acpiphp_disable_slot(slot);
- if (retval) {
- err("Error occurred in disabling\n");
+
+ retval = acpiphp_disable_and_eject_slot(slot);
+ if (retval)
goto err_exit;
- } else {
- acpiphp_eject_slot(slot);
- }
+
disabled++;
} else {
if (status != ACPI_STA_ALL)
@@ -951,9 +928,7 @@
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
dbg("%s: Device eject notify on %s\n", __func__, objname);
- if (!(acpiphp_disable_slot(func->slot)))
- acpiphp_eject_slot(func->slot);
-
+ acpiphp_disable_and_eject_slot(func->slot);
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
@@ -1148,11 +1123,12 @@
}
/**
- * acpiphp_disable_slot - power off slot
+ * acpiphp_disable_and_eject_slot - power off and eject slot
* @slot: ACPI PHP slot
*/
-int acpiphp_disable_slot(struct acpiphp_slot *slot)
+int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)
{
+ struct acpiphp_func *func;
int retval = 0;
mutex_lock(&slot->crit_sect);
@@ -1167,6 +1143,16 @@
if (retval)
goto err_exit;
+ list_for_each_entry(func, &slot->funcs, sibling)
+ if (func->flags & FUNC_HAS_EJ0) {
+ acpi_handle handle = func_to_handle(func);
+
+ if (ACPI_FAILURE(acpi_evaluate_ej0(handle)))
+ acpi_handle_err(handle, "_EJ0 failed\n");
+
+ break;
+ }
+
err_exit:
mutex_unlock(&slot->crit_sect);
return retval;