7974 Some USB3 drives don't attach
Reviewed by: Dan McDonald <danmcd@omniti.com>

@@ -21,11 +21,11 @@
 /*
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  *
  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
- * Copyright 2016 Joyent, Inc.
+ * Copyright 2017 Joyent, Inc.
  */
 
 /*
  * USBA: Solaris USB Architecture support
  *

@@ -1140,10 +1140,11 @@
                 n_cvs_ptr = &state->st_curr_alt->altif_n_cvs;
                 cvs_ptr = &state->st_curr_alt->altif_cvs;
                 break;
 
         case USB_DESCR_TYPE_EP:
+        case USB_DESCR_TYPE_SS_EP_COMP:
                 n_cvs_ptr = &state->st_curr_ep->ep_n_cvs;
                 cvs_ptr = &state->st_curr_ep->ep_cvs;
                 break;
 
         default: