[REVIEW] move tty lock/initial up in the stack

[Poul-Henning Kamp]

In message <20040620.122057.84501606.imp at bsdimp.com>, "M. Warner Losh" writes:
>: 
>: PS: I just added cyclades to the list of references there. Feel free
>:     to add more or replace this with a better one.
>
>OK.  I've added a few of my own notes to the mix.  I think that
>fleshing out the notes a little more might be useful.  It looks like
>there are many granularities for the knowning about which uarts
>generated.  It looks like on stallion cards, for example, you know
>which pannel generated an interrupt, but that the pannel might have 4
>different multi-port uarts you have to then go query.

I put a cautionary note about sync devices there.  I would really
advocate not going anywhere near sync modes unless we have a really
compelling reason to.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.