Author: hselasky
Date: Tue Jan 20 11:43:16 2015
New Revision: 277417
URL: https://svnweb.freebsd.org/changeset/base/277417
Log:
Fix returned data for the USB_GET_DEV_PORT_PATH IOCTL in particular
the value returned in the "udp_port_level" field.
Reported by: Uffe Jakobsen <u...@uffe.org>
MFC after: 1 week
Modified:
head/sys/dev/usb/usb_generic.c
Modified: head/sys/dev/usb/usb_generic.c
==============================================================================
--- head/sys/dev/usb/usb_generic.c Tue Jan 20 11:32:48 2015
(r277416)
+++ head/sys/dev/usb/usb_generic.c Tue Jan 20 11:43:16 2015
(r277417)
@@ -1849,14 +1849,13 @@ ugen_get_port_path(struct usb_fifo *f, s
if (nlevel > USB_DEVICE_PORT_PATH_MAX)
goto error;
+ /* store total level of ports */
+ dpp->udp_port_level = nlevel;
+
/* store port index array */
next = udev;
while (next->parent_hub != NULL) {
- nlevel--;
-
- dpp->udp_port_no[nlevel] = next->port_no;
- dpp->udp_port_level = nlevel;
-
+ dpp->udp_port_no[--nlevel] = next->port_no;
next = next->parent_hub;
}
return (0); /* success */
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