port-i386/37790: Sony VAIO stuck calling _WAK on resume due to stuck EC

[jmcneill%invisible.ca@localhost]

>Number:         37790
>Category:       port-i386
>Synopsis:       Sony VAIO stuck callin _WAK on resume due to stuck EC
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 18 00:40:00 +0000 2008
>Originator:     Jared D. McNeill
>Release:        NetBSD 4.99.49
>Organization:
        
>Environment:
        
        
System: NetBSD silver.invisible.ca 4.99.49 NetBSD 4.99.49 (GENERIC) #4: Thu Jan 
17 19:14:44 EST 2008 
jmcneill%silver.invisible.ca@localhost:/export/home/jmcneill/branches/HEAD/src/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
>Description:
        On resume, an EC read triggered by the _WAK method on my VAIO VGN-N250E
        gets stuck in the EC state machine.

        acpi_ec.c rev 1.49 works around this issue, but is not a proper fix.
>How-To-Repeat:
        Suspend/resume on a VAIO VGN-N250E.
>Fix:
        Unknown. Workaround is to either disable acpiec and acpiecdt, or
        update to rev 1.49 of acpi_ec.c.

>Unformatted: