linux-kernel - [PATCH 3.16 035/204] usb-storage: unusual_devs entry to fix write-access regression for Seagate external drives

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Date:   Thu, 28 Dec 2017 17:05:44 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Kris Lindgren" <kris.lindgren@...il.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "Alan Stern" <stern@...land.harvard.edu>
Subject: [PATCH 3.16 035/204] usb-storage: unusual_devs entry to fix
 write-access regression for Seagate external drives

3.16.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Alan Stern <stern@...land.harvard.edu>

commit 113f6eb6d50cfa5e2a1cdcf1678b12661fa272ab upstream.

Kris Lindgren reports that without the NO_WP_DETECT flag, his Seagate
external disk drive fails all write accesses.  This regresssion dates
back approximately to the start of the 4.x kernel releases.

Signed-off-by: Alan Stern <stern@...land.harvard.edu>
Reported-by: Kris Lindgren <kris.lindgren@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/storage/unusual_devs.h | 7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1360,6 +1360,13 @@ UNUSUAL_DEV( 0x0bc2, 0x3010, 0x0000, 0x0
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_SANE_SENSE ),
 
+/* Reported by Kris Lindgren <kris.lindgren@...il.com> */
+UNUSUAL_DEV( 0x0bc2, 0x3332, 0x0000, 0x9999,
+		"Seagate",
+		"External",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_NO_WP_DETECT ),
+
 UNUSUAL_DEV(  0x0d49, 0x7310, 0x0000, 0x9999,
 		"Maxtor",
 		"USB to SATA",