From 175f88a374ca905293f67219a8201cd00a27f541 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Tue, 28 Mar 2017 10:33:15 +0200
Subject: [PATCH] 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>
---
drivers/usb/misc/lvstest.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index 6d075cdb6ed16..2142132a1f82e 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -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) {
--
2.30.2