From 24f8b116c45e46779dec553f934c3d74f79c06fb Mon Sep 17 00:00:00 2001
From: Horst Schirmeier <horst@schirmeier.com>
Date: Sat, 11 Mar 2006 00:16:55 -0800
Subject: [PATCH] USB: fix check_ctrlrecip to allow control transfers in state
 ADDRESS

check_ctrlrecip() disallows any control transfers if the device is
deconfigured (in configuration 0, ie.  state ADDRESS).  This for example
makes it impossible to read the device descriptors without configuring the
device, although most standard device requests are allowed in this state by
the spec.  This patch allows control transfers for the ADDRESS state, too.

Signed-off-by: Horst Schirmeier <horst@schirmeier.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index de6a7c0..545da37 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -493,7 +493,8 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, unsig
 {
 	int ret = 0;
 
-	if (ps->dev->state != USB_STATE_CONFIGURED)
+	if (ps->dev->state != USB_STATE_ADDRESS
+	 && ps->dev->state != USB_STATE_CONFIGURED)
 		return -EHOSTUNREACH;
 	if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype))
 		return 0;
-- 
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