Re: [patch 1/3] ps3: Disk Storage Driver

[Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>]

On Thu, 19 Jul 2007, Cornelia Huck wrote:
> On Thu, 19 Jul 2007 10:57:53 +0200 (CEST),
> Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> wrote:
> 
> > Were .probe()/.remove() made concurrent again? I thought that idea was dropped
> > because it caused too many problems?
> 
> Well, for a given device, ->probe()/->remove() are locked by dev->sem,
> so that there cannot be two probes/removes for the same device at the
> same time. However, if you have multiple hotplug events pending at the

OK.

> same time, it depends on your bus whether it does some serialization or
> whether it allows multiple probes/removes running for different devices.
> (Initial probing of a bus and probing of all devices with a new driver
> is done serialized again, I think that's what you're referring to.)

We have a probe thread that checks for new storage devices and adds them to the
bus with ps3_system_bus_device_register(), which calls device_register().

I guess the actual bus probe() routine gets called through the notifier call
chain? That's where I got lost...

With kind regards,
 
Geert Uytterhoeven
Software Architect

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