port-arm/49737: armgtmr0 timer broken

[martin%NetBSD.org@localhost]

>Number:         49737
>Category:       port-arm
>Synopsis:       armgtmr0 timer broken
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 08 16:10:00 +0000 2015
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.6
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 7.99.6 NetBSD 7.99.6 (CUBIETRUCK) #148: Sun Mar 8 17:00:07 CET 2015 martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/evbarm/compile/CUBIETRUCK evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:

Since some time the /usr/tests/lib/libc/sys:t_clock_gettime test fails
on my CUBIETRUCK.

Last known working kernel is from Feb 23.

>How-To-Repeat:

as root do:
	cd /usr/tests/lib/libc/sys
	atf-run t_clock_gettime

and watch:

tc-so:Checking armgtmr0 for 5 seconds
tc-so:BAD time TSA: 0x54fc72da.37acd333, TSB: 0x54fc72da.37ab6eb9, diff = -91258 nsec, 1897690454 nsec

>Fix:
n/a