kern/37894: azalia power management support is incomplete, buggy

[jmcneill%invisible.ca@localhost]

>Number:         37894
>Category:       kern
>Synopsis:       azalia power management support is incomplete, buggy
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 29 02:45:00 +0000 2008
>Originator:     Jared D. McNeill
>Release:        NetBSD 4.99.50
>Organization:
        
>Environment:
        
        
System: NetBSD black.invisible.ca 4.99.50 NetBSD 4.99.50 (GENERIC) #203: Mon 
Jan 28 21:28:55 EST 2008 
jmcneill%black.invisible.ca@localhost:/export/home/jmcneill/branches/HEAD/src/sys/arch/amd64/compile/GENERIC
 amd64
Architecture: x86_64
Machine: amd64
>Description:
        Frequently on resume from D3, azalia shows:

                azalia0: RIRB time out
                azalia0: RIRB time out
                azalia0: RIRB time out
                [...]
                audio0 detached

        Not entirely sure why, as the resume sequence is identical to
        the attach sequence.
>How-To-Repeat:
        Suspend/resume with the azalia driver loaded, doesn't happen every
        time.
>Fix:
        Workaround: After resume:

                # drvctl -d azalia0
                # drvctl -r pci0

        Will always restore azalia to a working state.

>Unformatted: