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@xxxxxxxxxxxxxxx> know about it.
>From 8e779c6c4a398763c21371fe40f649206041dc1e Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Tue, 21 Apr 2015 11:20:32 +0200
Subject: uas: Set max_sectors_240 quirk for ASM1053 devices
From: Hans de Goede <hdegoede@xxxxxxxxxx>
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@xxxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Tested-by: Steve Bangert <sbangert@xxxxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx 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
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