On Mon, Apr 23, 2007 at 03:40:21PM +0900, Tejun Heo wrote:
> Hello, Dmitry.
>
> Dmitry Torokhov wrote:
> > Isn't think a good thing? By decoupling the 2 layers we insulate them
> > from changes in each other. This allows bug subsystems to concentrate
> > on topics that important to them instead of worying about refcounting
> > objects that are not directly interesting for the subsystem in
> > question.
>
> I think the best thing would be make struct device's lifetime rules
> simple enough such that it doesn't really matter to driver subsystems
> and drivers can just do what they wanna do.
I agree.
> Also, separate struct device from the actual implementation has problem
> in that struct device is widely used to refer to the device by many
> layers drivers register devices to. Basically, you'll have to implement
> immediate-disconnect between struct device and the actual
> implementation. So, it just shifts the problem from struct device to
> the place between struct device and actual implementation and I think
> struct device itself is better place to deal with that than somewhere
> inbetween it and driver private data.
I also agree.
> > Now for smaller subsystems it may make sense to embed stuct devices
> > into subsystem objects and manage it all together. In fact input
> > system does this but I think it is much simlpier than SCSI or IDE.
>
> Well, both SCSI and IDE heavily depend on struct device acting as 'base
> class'. It's all over the place and almost a basic assumption about the
> driver model.
And that's how it should be.
And your sysfs patches now make it a lot easier than before, and I can't
thank you enough for doing that work.
thanks,
greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
