1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c
index 67340cc70142..257706e7734f 100644
--- a/drivers/acpi/acpica/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -70,6 +70,12 @@ acpi_ex_store_buffer_to_buffer(union acpi_operand_object *source_desc,
 
         ACPI_FUNCTION_TRACE_PTR(ex_store_buffer_to_buffer, source_desc);
 
+        /* If Source and Target are the same, just return */
+
+        if (source_desc == target_desc) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
         /* We know that source_desc is a buffer by now */
 
         buffer = ACPI_CAST_PTR(u8, source_desc->buffer.pointer);
@@ -161,6 +167,12 @@ acpi_ex_store_string_to_string(union acpi_operand_object *source_desc,
 
         ACPI_FUNCTION_TRACE_PTR(ex_store_string_to_string, source_desc);
 
+        /* If Source and Target are the same, just return */
+
+        if (source_desc == target_desc) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
         /* We know that source_desc is a string by now */
 
         buffer = ACPI_CAST_PTR(u8, source_desc->string.pointer);