Re: PATCH: (as177) Add class_device_unregister_wait() andplatform_device_unregister_wait() to the driver model core

From: Linus Torvalds
Date: Fri Jan 23 2004 - 12:43:36 EST




On Fri, 23 Jan 2004, Alan Stern wrote:
>
> Since I haven't seen any progress towards implementing the
> class_device_unregister_wait() and platform_device_unregister_wait()
> functions, here is my attempt.

So why would this not deadlock?

The reason we don't wait on things like this is that it's basically
impossible not to deadlock.

There are damn good reasons why the kernel uses reference counting
everywhere. Any other approach is broken.

Linus
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