ACPI: remove unnecessary argument checking

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>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 6c83342d13d5..f2e283426be9 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");