libata-pmp: add support for Thermaltake BlackX Duet esata drive dock

Some errors still show up, but the dock works, both drives can be
accessed at the same time

The chip maker and designation is unknown - possibly jmicron JMB350?
Signed-off-by: NPavel Herrmann <morpheus.ibis@gmail.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

drivers/ata/libata-pmp.c

@@ -449,6 +449,16 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		 * otherwise.  Don't try hard to recover it.
 		 */
 		ap->pmp_link[ap->nr_pmp_links - 1].flags |= ATA_LFLAG_NO_RETRY;
+	} else if (vendor == 0x197b && devid == 0x2352) {
+		/* chip found in Thermaltake BlackX Duet, jmicron JMB350? */
+		ata_for_each_link(link, ap, EDGE) {
+			/* SRST breaks detection and disks get misclassified
+			 * LPM disabled to avoid potential problems
+			 */
+			link->flags |= ATA_LFLAG_NO_LPM |
+				       ATA_LFLAG_NO_SRST |
+				       ATA_LFLAG_ASSUME_ATA;
+		}
 	}
 }