ACPI: Do not pass NULL to acpi_get_handle() when looking for _EJD

When trying to get the acpi_handle from an acpi_buffer, pass
ACPI_ROOT_OBJECT instead of NULL to acpi_get_handle(). This fixes the
detection of dock dependent bays.

Signed-off-by: Holger Macht <hmacht@suse.de>
Tested-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 3fac011f9cf9..d9b914303b9c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -609,7 +609,8 @@ acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
         status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
         if (ACPI_SUCCESS(status)) {
                 obj = buffer.pointer;
-                status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+                status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer,
+                                         ejd);
                 kfree(buffer.pointer);
         }
         return status;