[PATCH v3 09/17] ACPI: remove unnecessary argument checking

[Bjorn Helgaas <bjorn.helgaas@hp.com>]

acpi_add_single_object() is static, and all callers supply a valid "child"
argument, so we don't need to check it.  This patch also remove some
unnecessary initializations.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
---
 drivers/acpi/scan.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 6c83342..f2e2834 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1222,14 +1222,10 @@ acpi_add_single_object(struct acpi_device **child,
 		       struct acpi_device *parent, acpi_handle handle, int type,
 			struct acpi_bus_ops *ops)
 {
-	int result = 0;
-	struct acpi_device *device = NULL;
+	int result;
+	struct acpi_device *device;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-
-	if (!child)
-		return -EINVAL;
-
 	device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL);
 	if (!device) {
 		printk(KERN_ERR PREFIX "Memory allocation error\n");