Re: hdparm

[Martijn van Oosterhout <kleptog@svana.org>]

On Tue, Sep 24, 2002 at 10:47:22AM -0700, Osamu Aoki wrote:
> On Tue, Sep 24, 2002 at 04:11:17PM +0100, Darren Salt wrote:
> > I demand that Simon Hürlimann may or may not have top-posted...
> > > - what are the default params? very safe, so just installing hdparm won't
> > > bring any enhancement, or should hdparm act as a speed enhancer, meaning
> > > setting dma, io_32bit...?
> > 
> > ... but having it default to being a speed enhancer is a *bad* idea unless
> > tests can be run during startup to determine whether things such as 32bit I/O
> > will work.
> 
> If you read bug report, that was concern and that was the reason why I
> proposed silly placeholder file.  What ever way we impliment, default
> shall be "off" unless someopne write very smart auto detector.

I seem to remember that any options set this way are not sticky and will be
reset if the kernel ever has to reset the controller. So the real question
is, how many systems:

- Can't handle setting the 32-bit flag or some other flag
- *and* the kernel can't recover by resetting the controller

-- 
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> There are 10 kinds of people in the world, those that can do binary
> arithmetic and those that can't.