On Tue, 8 May 2007, Cornelia Huck wrote:
>
> Is there any reason why a driver shouldn't be able to handle probing
> several devices at once?
Internal driver reasons?
Look, Cornelia, there's about a million drivers in the kernel. They are
not all safe. End of discussion.
If you are willing to go through them all, fix everything, test it, talk
with all maintainers, all the more power to you.
As it is, that's not going to happen. So you should *assume* that drivers
are not expecting to be called multiple times in parallel. And if they
are, you may then assume that people don't want them to be, because they
want stable naming.
> What if two devices become hotplugged at the same time? Does this imply
> that the bus _always_ needs to do some serializing there?
You want to test it? Be my guest.
But the final nail in the coffin is that doing it at the bus level is
INFERIOR. As you yourself admitted, it's better to do some things
synchronously.
Linus
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