perq = usb_stor_buf[0];
modi = usb_stor_buf[1];
- if ((perq & 0x1f) == 0x1f) {
- /* skip unknown devices */
+ /*
+ * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
+ * they would not respond to test_unit_ready .
+ */
+ if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
return 0;
}
if ((modi&0x80) == 0x80) {