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[PATCH] USB: fix check_ctrlrecip to allow control transfers in state ADDRESS

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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>
This commit is contained in:
Horst Schirmeier 2006-03-11 00:16:55 -08:00 committed by Greg Kroah-Hartman
parent f88f8295d8
commit 24f8b116c4
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/core/devio.c
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@ -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;