[PATCH 3.16.y-ckt 024/129] uas: Set max_sectors_240 quirk for ASM1053 devices

[Luis Henriques]

3.16.7-ckt12 -stable review patch.  If anyone has any objections, please let me know.

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

From: Hans de Goede <hdegoede at redhat.com>

commit 8e779c6c4a398763c21371fe40f649206041dc1e upstream.

Testing has shown that ASM1053 devices do not work properly with transfers
larger than 240 sectors, so set max_sectors to 240 on these.

Reported-by: Steve Bangert <sbangert at frontier.com>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
Tested-by: Steve Bangert <sbangert at frontier.com>
Acked-by: Alan Stern <stern at rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/usb/storage/uas-detect.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/storage/uas-detect.h b/drivers/usb/storage/uas-detect.h
index 63ae1619fdb8..f58caa9e6a27 100644
--- a/drivers/usb/storage/uas-detect.h
+++ b/drivers/usb/storage/uas-detect.h
@@ -74,7 +74,7 @@ static int uas_use_uas_driver(struct usb_interface *intf,
 	 * this writing the following versions exist:
 	 * ASM1051 - no uas support version
 	 * ASM1051 - with broken (*) uas support
-	 * ASM1053 - with working uas support
+	 * ASM1053 - with working uas support, but problems with large xfers
 	 * ASM1153 - with working uas support
 	 *
 	 * Devices with these chips re-use a number of device-ids over the
@@ -104,6 +104,9 @@ static int uas_use_uas_driver(struct usb_interface *intf,
 		} else if (usb_ss_max_streams(&eps[1]->ss_ep_comp) == 32) {
 			/* Possibly an ASM1051, disable uas */
 			flags |= US_FL_IGNORE_UAS;
+		} else {
+			/* ASM1053, these have issues with large transfers */
+			flags |= US_FL_MAX_SECTORS_240;
 		}
 	}