Re: [KJ] [PATCH] Correct misc_register return code handling in several drivers

[Matthew Wilcox]

On Tue, Oct 24, 2006 at 08:53:06AM -0400, Neil Horman wrote:
> The INIT_LIST_HEAD is there to prevent a potential oops on module removal.
> misc_register, if it fails, leaves miscdevice.list unchanged.  That means its
> next and prev pointers contain NULL or garbage, when both pointers should contain
> &miscdevice.list. If we don't do that, then there is a chance we will oops on
> module removal when we do a list_del in misc_deregister on the moudule_exit
> routine.  I could have done this statically, but I thought it looked cleaner to
> do it with the macro in the code.

Maybe it would be better to have misc_register() call INIT_LIST_HEAD in
the failure case?
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