Em Thu, Jul 04, 2002 at 12:50:12PM -0700, Matthew Dharm escreveu:
> > > Because relying on a pointer has caused problems in the past, especially
> > > when there are concerns that the pointer might be invalid.

> > Could you explain a bit more? How could the pointer become invalid?

> There was a large discussion of this in relation to another driver on
> linux-usb-devel... basically, the pointer is just an address to a structure
> owned by an HCD... it's entirely possible for the structure to go away on
> us unexpectedly.  We _should_ get the notification via the _disconnect()
> call, but real-world experience showed us that this wasn't always
> happening.

Humm, I believed that USB was using refcounting

- Arnaldo
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