Patch "uas: Set max_sectors_240 quirk for ASM1053 devices" has been added to the 4.0-stable tree

Patch "uas: Set max_sectors_240 quirk for ASM1053 devices" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    uas: Set max_sectors_240 quirk for ASM1053 devices

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     uas-set-max_sectors_240-quirk-for-asm1053-devices.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8e779c6c4a398763c21371fe40f649206041dc1e Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 21 Apr 2015 11:20:32 +0200
Subject: uas: Set max_sectors_240 quirk for ASM1053 devices

From: Hans de Goede <hdegoede@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@frontier.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Steve Bangert <sbangert@frontier.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/storage/uas-detect.h |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- 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
 	 * 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
 		} 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;
 		}
 	}
 


Patches currently in stable-queue which might be from hdegoede@redhat.com are

queue-4.0/uas-set-max_sectors_240-quirk-for-asm1053-devices.patch
queue-4.0/uas-allow-uas_use_uas_driver-to-return-usb-storage-flags.patch
queue-4.0/uas-add-us_fl_max_sectors_240-flag.patch