The following reply was made to PR usb/188829; it has been noted by GNATS.

From: Roberto de Iriarte <rdeir...@spock.cl>
To: Hans Petter Selasky <h...@selasky.org>,
  freebsd-gnats-sub...@freebsd.org
Cc:  
Subject: Re: usb/188829: atp fails on Macbook Pro 4.1
Date: Mon, 21 Apr 2014 12:15:10 -0300

 On 04/20/14 13:35, Hans Petter Selasky wrote:
 > On 04/20/14 18:01, Roberto de Iriarte wrote:
 >>
 >>> Number:         188829
 >>> Category:       usb
 >>> Synopsis:       atp fails on Macbook Pro 4.1
 >>> 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:   Sun Apr 20 16:10:00 UTC 2014
 >>> Closed-Date:
 >>> Last-Modified:
 >>> Originator:     Roberto de Iriarte
 >>> Release:        10.0-STABLE
 >>> Organization:
 >> De Iriarte
 >>> Environment:
 >> FreeBSD mbp 10.0-STABLE FreeBSD 10.0-STABLE #13 r264692M: Sun Apr 20
 >> 12:14:28 CLST 2014     root@mbp:/usr/obj/usr/src/sys/GENERIC  amd64
 >>> Description:
 >> On my Macbook Pro 4.1, after upgrading from 10.0-RELEASE to
 >> 10.0-STABLE, the atp touchpad driver becomes unresponsive after a few
 >> minutes under high I/O load, until it stalls completely. The device
 >> never unstalls, regardless of system load.
 >>
 >> Closing and opening /dev/atp0 (i.e. restarting moused) restores
 >> responsiveness for a couple of minutes, then it fails in the same
 >> manner.
 >>
 >> Reverting back /usr/src/sys/dev/usb/input/atp.c from rev. 263063 to
 >> rev. 233774 (as shipped with FreeBSD 10.0-RELEASE) solves the problem
 >> completely on my machine.
 >>
 >> Unfortunately, i am not versed in the workings of the atp driver in
 >> order to debug the new driver any further.
 >>> How-To-Repeat:
 >> Use the trackpad under high I/O load
 >>> Fix:
 >> Hack: Revert back to /usr/src/sys/dev/usb/input/atp.c as shipped with
 >> 10.0-RELEASE (r. 233774)
 >>
 >>> Release-Note:
 >>> Audit-Trail:
 >>> Unformatted:
 >> _______________________________________________
 >
 > Hi,
 >
 > Can you send output from:
 >
 > usbconfig dump_device_desc
 >
 > which is relevant for your device.
 >
 The relevant device is
 
 ugen5.3: <Apple Internal Keyboard  Trackpad Apple Computer> at usbus5,
 cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (40mA)
 
   bLength = 0x0012
   bDescriptorType = 0x0001
   bcdUSB = 0x0200
   bDeviceClass = 0x0000
   bDeviceSubClass = 0x0000
   bDeviceProtocol = 0x0000
   bMaxPacketSize0 = 0x0008
   idVendor = 0x05ac
   idProduct = 0x021a
   bcdDevice = 0x0018
   iManufacturer = 0x0001  <Apple Computer>
   iProduct = 0x0002  <Apple Internal Keyboard / Trackpad>
   iSerialNumber = 0x0000  <no string>
   bNumConfigurations = 0x0001
 
 
 > What happens if you add to /boot/loader.conf
 >
 > wsp_load=YES
 >
 > And re-boot?
 >
 > --HPS
 >
 I tried the following configurations on /boot/loader.conf
 
 atp_load=YES
 wsp_load=YES
 
 Same effect as with atp_load only, device gets dected as atp0, fails as
 described
 
 wsp_load=YES only
 
 Device gets detected as usm0, using the ums driver, it works but no
 touchpad features are recognized)
 
 Thanks a lot!
 Roberto
 
 
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