usb/77604: Sluggish Logitch LX700 USB Mouse

[Jonathan Fosburgh]

The following reply was made to PR usb/77604; it has been noted by GNATS.

From: Jonathan Fosburgh <jonathan at fosburgh.org>
To: FreeBSD-gnats-submit at freebsd.org, freebsd-usb at freebsd.org
Cc:  
Subject: Re: usb/77604: Sluggish Logitch LX700 USB Mouse
Date: Wed, 9 Mar 2005 13:24:35 -0600

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 Attached is a patch to -CURRENT that fixes this problem. It is based on a=20
 patch to 5-STABLE sent to me by Morten Johansen. It is adapted from NetBSD'=
 s=20
 version of the hid_report_size() function. I am sending both patches, since=
 =20
 there are slight differences  between HEAD and RELENG_5.
 
 =2D-=20
 Jonathan Fosburgh
 AIX and Storage Administrator
 UT MD Anderson Cancer Center
 Houston, TX
 
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 =2D-- hid.c.orig	Tue Feb 22 01:27:35 2005
 +++ hid.c	Tue Feb 22 01:38:44 2005
 @@ -371,14 +371,22 @@ hid_report_size(void *buf, int len, enum
  {
  	struct hid_data *d;
  	struct hid_item h;
 =2D	int size, id;
 +	int hi, lo, size, id;
 =20
  	id =3D 0;
 +	hi =3D lo =3D -1;
  	for (d =3D hid_start_parse(buf, len, 1<<k); hid_get_item(d, &h); )
 =2D		if (h.report_ID !=3D 0)
 =2D			id =3D h.report_ID;
 +		if (h.kind =3D=3D k) {
 +			if (h.report_ID !=3D 0 && !id)
 +				id =3D h.report_ID;
 +			if (h.report_ID =3D=3D id) {
 +				if (lo < 0)
 +					lo =3D h.loc.pos;
 +				hi =3D h.loc.pos + h.loc.size * h.loc.count;
 +			}
 +		}
  	hid_end_parse(d);
 =2D	size =3D h.loc.pos;
 +	size =3D hi - lo;
  	if (id !=3D 0) {
  		size +=3D 8;
  		*idp =3D id;	/* XXX wrong */
 
 
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 =2D-- hid.c.orig	Sun Feb  6 06:41:00 2005
 +++ hid.c	Wed Mar  9 11:31:02 2005
 @@ -371,14 +371,23 @@
  {
  	struct hid_data *d;
  	struct hid_item h;
 =2D	int size, id;
 +	int hi, lo, size, id;
 =20
  	id =3D 0;
 +	hi =3D lo =3D -1;
  	for (d =3D hid_start_parse(buf, len, 1<<k); hid_get_item(d, &h); )
 =2D		if (h.report_ID !=3D 0 && !id)
 =2D			id =3D h.report_ID;
 +		if (h.kind =3D=3D k) {
 +                       if (h.report_ID !=3D 0 && !id)
 +                               id =3D h.report_ID;
 +                       if (h.report_ID =3D=3D id) {
 +                               if (lo < 0)
 +                                       lo =3D h.loc.pos;
 +                               hi =3D h.loc.pos + h.loc.size * h.loc.count;
 +                       }
 +               }
 +
  	hid_end_parse(d);
 =2D	size =3D h.loc.pos;
 +	size =3D hi - lo;
  	if (id !=3D 0) {
  		size +=3D 8;
  		*idp =3D id;	/* XXX wrong */
 
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