Re: [RFC/CFT] cmd640 irqlocking fixes

[Alan Cox]

On Thu, 2002-07-25 at 13:30, Andre Hedrick wrote:
> 
> EEK!
> 
> Alan, how are you going to sync to access to the shared HBA registers if
> the lock is decoupled from the main loop?  Since there are general
> register mucking abouts during data transfers, iirc the behavors of the
> CMD640B I use for testing.  You have me a little close to the edge of my
> seat on concern.

have not been synchronized for some time on VLB with no apparent
problems. If there are cases where PCI config needs synchronizing here
(which I dont believe is the case) then the caller should be holding the
io_request lock anyway, and seems to