2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------
From: Felipe Balbi <ba...@ti.com>
commit 472b91274a6c6857877b5caddb875dcb5ecdfcb8 upstream.
composite.c always sets req->length to zero
and expects function driver's setup handlers
to return the amount of bytes to be used
on req->length. If we test against req->length
w_length will always be greater than req->length
thus making us always stall that particular
SEND_ENCAPSULATED_COMMAND request.
Tested against a Windows XP SP3.
Signed-off-by: Felipe Balbi <ba...@ti.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
drivers/usb/gadget/f_rndis.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
Index: linux-2.6.35.y/drivers/usb/gadget/f_rndis.c
===================================================================
--- linux-2.6.35.y.orig/drivers/usb/gadget/f_rndis.c
+++ linux-2.6.35.y/drivers/usb/gadget/f_rndis.c
@@ -420,8 +420,7 @@ rndis_setup(struct usb_function *f, cons
*/
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8)
| USB_CDC_SEND_ENCAPSULATED_COMMAND:
- if (w_length > req->length || w_value
- || w_index != rndis->ctrl_id)
+ if (w_value || w_index != rndis->ctrl_id)
goto invalid;
/* read the request; process it later */
value = w_length;
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