From: Pavel Herrmann <morpheus.ibis@gmail.com>
Date: Thu, 28 Apr 2011 20:32:54 +0000 (+0200)
Subject: libata-pmp: add support for Thermaltake BlackX Duet esata drive dock
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0afc6f5ba95419fd505e60637f7645425f16e407;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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: Pavel Herrmann <morpheus.ibis@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
---

diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 3120596d4af..f06b7ea590d 100644
--- a/drivers/ata/libata-pmp.c
+++ b/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;
+		}
 	}
 }