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USB: lvstest: tighten endpoint sanity check 

Use the new endpoint helpers to lookup the required interrupt-in
endpoint.

Note that this in fact both loosens and tightens the endpoint sanity
check by accepting any interface with an interrupt-in endpoint rather
than always using the first endpoint without verifying its type.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2017-03-28 10:33:15 +02:00 committed by Greg Kroah-Hartman
parent e47ff590cc
commit 175f88a374
1 changed files with 3 additions and 4 deletions
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7
drivers/usb/misc/lvstest.c
View File

@ -367,10 +367,9 @@ static int lvs_rh_probe(struct usb_interface *intf,
hdev = interface_to_usbdev(intf);
desc = intf->cur_altsetting;
if (desc->desc.bNumEndpoints < 1)
return -ENODEV;
endpoint = &desc->endpoint[0].desc;
ret = usb_find_int_in_endpoint(desc, &endpoint);
if (ret)
return ret;
/* valid only for SS root hub */
if (hdev->descriptor.bDeviceProtocol != USB_HUB_PR_SS || hdev->parent) {