From: Hans de Goede <hdegoede@redhat.com>
Date: Fri, 1 Aug 2014 15:33:08 +0000 (+0200)
Subject: uas: Limit qdepth to 32 when connected over usb-2
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~164^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2875c33787ebda21aeecc1a9d3ff52b3aa413ec;p=pandora-kernel.git

uas: Limit qdepth to 32 when connected over usb-2

Some jmicron uas chipsets act up (they disconnect from the bus) when sending
more then 32 commands to them at once.

Rather then building an ever growing list with usb-id based quirks for
devices using this chipset, simply reduce the qdepth to 32 when connected
over usb-2. 32 should be plenty to keep things close to maximum
possible throughput on usb-2.

Cc: stable@vger.kernel.org
Tested-and-reported-by: Laszlo T. <tlacix@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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