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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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