diff options
| author | Felipe Balbi <balbi@ti.com> | 2011-05-13 16:53:48 +0300 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2011-12-15 17:13:28 -0600 |
| commit | 5003d20a4f00f128809fe716ffe963011f43d363 (patch) | |
| tree | 321ed6ae1d40ad1f926230606e4596a463acc16f | |
| parent | 8cf93794d1bf623f4c4e1137e0e63776b815a1b4 (diff) | |
usb: gadget: rndis: don't test against req->length
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 <balbi@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/gadget/f_rndis.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 46f9cfd9f931..1d22d95dcc73 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -422,8 +422,7 @@ rndis_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) */ 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; |