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orinoco_usb: fix interface sanity check

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commit b73e05aa54 upstream.

Make sure to use the current alternate setting when verifying the
interface descriptors to avoid binding to an invalid interface.

Failing to do so could cause the driver to misbehave or trigger a WARN()
in usb_submit_urb() that kernels with panic_on_warn set would choke on.

Fixes: 9afac70a73 ("orinoco: add orinoco_usb driver")
Cc: stable <stable@vger.kernel.org>     # 2.6.35
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2019-12-10 12:44:23 +01:00
committed by Chris
parent 48e2cfbf98
commit 3f766cf96c
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/intersil/orinoco/orinoco_usb.c
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@@ -1601,9 +1601,9 @@ static int ezusb_probe(struct usb_interface *interface,
/* set up the endpoint information */
/* check out the endpoints */
iface_desc = &interface->altsetting[0].desc;
iface_desc = &interface->cur_altsetting->desc;
for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
ep = &interface->altsetting[0].endpoint[i].desc;
ep = &interface->cur_altsetting->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(ep)) {
/* we found a bulk in endpoint */