usb/101775: [libusbhid] [patch] possible error in report descriptor parsing

[Dmitry Marakasov]

>Number:         101775
>Category:       usb
>Synopsis:       [libusbhid] [patch] possible error in report descriptor parsing
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Aug 10 19:40:16 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Dmitry Marakasov
>Release:        FreeBSD 6.1-RELEASE-p3 i386
>Organization:
>Environment:
System: FreeBSD hades.panopticon 6.1-RELEASE-p3 FreeBSD 6.1-RELEASE-p3 #1: Tue Aug 8 17:11:07 MSD 2006 amdmi3 at hades.panopticon:/usr/obj/usr/src/sys/HADES i386

>Description:
Currently, when parsing HID report descriptor, libusbhid treats
global items with both tag=3 and tag=4 as `physical maximum', while
tag=3 actually is `physical minimum'.
>How-To-Repeat:
>Fix:

--- parse.c.patch begins here ---
--- src/lib/libusbhid/parse.c.orig	Thu Aug 10 23:27:17 2006
+++ src/lib/libusbhid/parse.c	Thu Aug 10 23:27:59 2006
@@ -321,7 +321,7 @@
 				c->logical_maximum = dval;
 				break;
 			case 3:
-				c->physical_maximum = dval;
+				c->physical_minimum = dval;
 				break;
 			case 4:
 				c->physical_maximum = dval;
--- parse.c.patch ends here ---


>Release-Note:
>Audit-Trail:
>Unformatted: