From: David Fries <David@Fries.net>
Date: Thu, 16 Jan 2014 04:29:22 +0000 (-0600)
Subject: w1: ds2490 USB setup fixes
X-Git-Tag: v3.15-rc1~141^2~94
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da78b7e74ac5964015bed78d27e1fca8bae8e29a;p=pandora-kernel.git

w1: ds2490 USB setup fixes

Calling usb_reset_configuration after usb_set_interface resets the
interface that was just selected, so call reset first.
Using alternative 3 greatly speeds the one wire search.
alt 0 or 1, 10ms int, 23.16 seconds
alt 2 or 3,  1ms int, 2.99 to 3.05 seconds

Use usb_interrupt_msg not usb_bulk_msg as it is an interrupt pipe
(bulk worked, it was just technically the wrong call).

Signed-off-by: David Fries <David@Fries.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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