[Quickcall] quickcalld hid events work for a short time only, then gets wedged on a 'pressed' event

[Aaron Roydhouse]

Hi David, thanks for the code to init the Quickcall devices. End-of-life 
as they are, I am very fond of the microphone array for speaker-phone 
calls. I had taken to giving them to people who call me so I could hear 
them clearly :-) But it great that thanks to your efforts I can finally 
use one myself.

I find it works great but locks up while processing button events. I 
built quickcalld on Ubuntu 11.04 with libasound 1.0.24.1-0ubunut5 and 
libusb-dev 2:0.1.12-17. It initialises the device fine and initially 
listens and acts on hid events (volume, mute). However, after anywhere 
from 1 to about a dozen events, it wedges up. The daemon process is 
still running, but it no longer reacts to events. I note that normally 
if you unplug the device the process notices and exits. However once it 
stops processing events, it also doesn't exit if you remove the device, 
you have to kill it.

Below are a couple of same runs from syslog:

Oct  1 16:44:18 shim quickcalld[504]: Running on Quickcall device at 
/sys/devices/pci0000:00/0000:00:1d.0/usb6/6-2
Oct  1 16:44:31 shim quickcalld[504]: MUTE pressed
Oct  1 16:44:31 shim quickcalld[504]: MUTE released
Oct  1 16:44:33 shim quickcalld[504]: MUTE pressed
<-- wedged here, events stop being processed

Oct  1 16:45:04 shim quickcalld[521]: Running on Quickcall device at 
/sys/devices/pci0000:00/0000:00:1d.0/usb6/6-2
Oct  1 16:45:09 shim quickcalld[521]: RIGHT pressed
Oct  1 16:45:09 shim quickcalld[521]: RIGHT released
Oct  1 16:45:12 shim quickcalld[521]: RIGHT pressed
Oct  1 16:45:12 shim quickcalld[521]: RIGHT released
Oct  1 16:45:13 shim quickcalld[521]: LEFT pressed
Oct  1 16:45:13 shim quickcalld[521]: LEFT released
Oct  1 16:45:14 shim quickcalld[521]: RIGHT pressed
Oct  1 16:45:14 shim quickcalld[521]: RIGHT released
Oct  1 16:45:15 shim quickcalld[521]: RIGHT pressed
Oct  1 16:45:15 shim quickcalld[521]: RIGHT released
Oct  1 16:45:15 shim quickcalld[521]: RIGHT pressed
Oct  1 16:45:15 shim quickcalld[521]: RIGHT released
Oct  1 16:45:16 shim quickcalld[521]: RIGHT pressed
<-- wedged here, events stop being processed

Oct  1 17:07:24 shim quickcalld[856]: Running on Quickcall device at 
/sys/devices/pci0000:00/0000:00:1d.0/usb6/6-2
Oct  1 17:07:24 shim quickcalld[856]: LEFT pressed
Oct  1 17:07:24 shim quickcalld[856]: LEFT released
Oct  1 17:07:29 shim quickcalld[856]: LEFT pressed
Oct  1 17:07:29 shim quickcalld[856]: LEFT released
Oct  1 17:07:29 shim quickcalld[856]: LEFT pressed
<-- wedged here, events stop being processed

Anyone else seen something similar?

I note it always seems to get stuck after a 'pressed' event. Could it be 
waiting for a 'released' event that it misses or that is never coming?

Aaron.

-- 
Aaron Roydhouse<aaron at roydhouse.com>
skype: aaron.roydhouse
+61 406 677404