From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
The acpiphp_bus_trim() and acpiphp_bus_add() functions need not
return error codes that are never checked, so redefine them and
simplify them a bit.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/pci/hotplug/acpiphp_glue.c | 52 +++++++++----------------------------
1 file changed, 13 insertions(+), 39 deletions(-)
Index: linux-pm/drivers/pci/hotplug/acpiphp_glue.c
===================================================================
--- linux-pm.orig/drivers/pci/hotplug/acpiphp_glue.c
+++ linux-pm/drivers/pci/hotplug/acpiphp_glue.c
@@ -540,53 +540,27 @@ static unsigned char acpiphp_max_busnr(s
return max;
}
-
/**
- * acpiphp_bus_add - add a new bus to acpi subsystem
- * @func: acpiphp_func of the bridge
+ * acpiphp_bus_trim - Trim device objects in an ACPI namespace subtree.
+ * @handle: ACPI device object handle to start from.
*/
-static int acpiphp_bus_add(struct acpiphp_func *func)
+static void acpiphp_bus_trim(acpi_handle handle)
{
- acpi_handle handle = func_to_handle(func);
- struct acpi_device *device;
- int ret_val;
-
- if (!acpi_bus_get_device(handle, &device)) {
- dbg("bus exists... trim\n");
- /* this shouldn't be in here, so remove
- * the bus then re-add it...
- */
- acpi_bus_trim(device);
- }
-
- ret_val = acpi_bus_scan(handle);
- if (!ret_val)
- ret_val = acpi_bus_get_device(handle, &device);
-
- if (ret_val)
- dbg("error adding bus, %x\n", -ret_val);
+ struct acpi_device *adev = NULL;
- return ret_val;
+ acpi_bus_get_device(handle, &adev);
+ if (adev)
+ acpi_bus_trim(adev);
}
-
/**
- * acpiphp_bus_trim - trim a bus from acpi subsystem
- * @handle: handle to acpi namespace
+ * acpiphp_bus_add - Scan ACPI namespace subtree.
+ * @handle: ACPI object handle to start the scan from.
*/
-static int acpiphp_bus_trim(acpi_handle handle)
+static void acpiphp_bus_add(acpi_handle handle)
{
- struct acpi_device *device;
- int retval;
-
- retval = acpi_bus_get_device(handle, &device);
- if (retval) {
- dbg("acpi_device not found\n");
- return retval;
- }
-
- acpi_bus_trim(device);
- return 0;
+ acpiphp_bus_trim(handle);
+ acpi_bus_scan(handle);
}
static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
@@ -649,7 +623,7 @@ static int __ref enable_device(struct ac
goto err_exit;
list_for_each_entry(func, &slot->funcs, sibling)
- acpiphp_bus_add(func);
+ acpiphp_bus_add(func_to_handle(func));
num = pci_scan_slot(bus, PCI_DEVFN(slot->device, 0));
if (num == 0) {
--
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