ata problems @ r189170

[Sam Leffler]

Sam Leffler wrote:
> HEAD @ r189170 fails to boot on a T41.  Two cd/dvd drivers are 
> recognized (only 1 exists) and I get complaints of the form (and 
> transcribed):
>
> acd1: WARNING - ATAPI_IDENTIFY taskqueue timeout - completing request 
> directory
>
> (similarly for acd0) until there's a panic:
>
> panic: mtx_lock() of destroy mutex @ .../../../kern_sema.c:79
>
> (stack trace uninteresting).
>

boot -v shows:

acd0: setting PIO4 on CH4 chip
acd0: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout - ...
acd0: setting UDMA32 on ICH4 chip
ata1: Identifying devices: 00030000
ata: New devices: 00000000
ata1: reinit done ..
panic ...

    Sam