Subject: Re: Separating softc and struct device?
To: None <tech-kern@netbsd.org>
From: Quentin Garnier <cube@cubidou.net>
List: tech-kern
Date: 08/29/2007 22:34:41
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On Wed, Aug 29, 2007 at 10:22:20PM +0200, Joerg Sonnenberger wrote:
> Hi all,
> is there a good reason to keep all the pointer casts for
> device softc's to struct device and vice versa? I think it would be good
> to follow the changes in ifnet vs arpcom and use direct pointer.
> An additional goody would be that struct device could become an abstract
> type and modifying it gets easier.
>=20
> Opinions?
It's my mid-term plan. My laptop has been running that way for quite a
while now.
It's not just about casts. There are several reasons it is needed:
- a device_t should be created whether or not a driver attach
(corollary: a driver can attach later)
- parent can get a device_t object, set some properties, _then_ let a
driver attach
--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"You could have made it, spitting out benchmarks
Owe it to yourself not to fail"
Amplifico, Spitting Out Benchmarks, Hometakes Vol. 2, 2005.
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