ses: fix additional element traversal bug

[pandora-kernel.git] / drivers / scsi / ses.c

diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index b3051fe..3643bbf 100644 (file)
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -454,7 +454,15 @@ static void ses_enclosure_data_process(struct enclosure_device *edev,
                        if (desc_ptr)
                                desc_ptr += len;
 
-                       if (addl_desc_ptr)
+                       if (addl_desc_ptr &&
+                           /* only find additional descriptions for specific devices */
+                           (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
+                            type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE ||
+                            type_ptr[0] == ENCLOSURE_COMPONENT_SAS_EXPANDER ||
+                            /* these elements are optional */
+                            type_ptr[0] == ENCLOSURE_COMPONENT_SCSI_TARGET_PORT ||
+                            type_ptr[0] == ENCLOSURE_COMPONENT_SCSI_INITIATOR_PORT ||
+                            type_ptr[0] == ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS))
                                addl_desc_ptr += addl_desc_ptr[1] + 2;
 
                }