Re: new computer, strange usb messages at boot

From: Larry Rosenman <ler_at_lerctr.org>
Date: Tue, 23 Feb 2016 08:28:43 -0600
On 2016-02-22 01:10, Hans Petter Selasky wrote:
> On 02/21/16 17:28, Larry Rosenman wrote:
>> Does this mean that the touch screen is hitting a limit in FreeBSD's
>> driver?
> 
> Yes, the hid driver is limiting the range of some report. This should
> be harmless. You would need to dump the HID descriptor to see the
> limits. Maybe we could raise the limit from 256 to 4096 or something
> in that range, to make the warning to away. It's
> 
> sys/dev/usb/usb_hid.c:
> 
>>                                         /* range check usage count */
>>                                         if (c->loc.count > 255) {
>>                                                 DPRINTFN(0, "Number of 
>> "
>>                                                     "items truncated 
>> to 255\n");
>>                                                 s->ncount = 255;
>>                                         } else
>>                                                 s->ncount = 
>> c->loc.count;
>> 
> 
> Try adding c->loc.count to the printout, to see the limit it is 
> exceeding.
> 
> --HPS

hid_get_item: Number of items truncated to 255 (was 256)


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler_at_lerctr.org
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961
Received on Tue Feb 23 2016 - 13:28:44 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:41:03 UTC