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Message-Id: <20150511175438.680960508@linuxfoundation.org>
Date: Mon, 11 May 2015 10:54:59 -0700
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Steve Bangert <sbangert@...ntier.com>,
Hans de Goede <hdegoede@...hat.com>,
Alan Stern <stern@...land.harvard.edu>
Subject: [PATCH 4.0 53/72] uas: Set max_sectors_240 quirk for ASM1053 devices
4.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans de Goede <hdegoede@...hat.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@...ntier.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Tested-by: Steve Bangert <sbangert@...ntier.com>
Acked-by: Alan Stern <stern@...land.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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;
}
}
--
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