devsw_detach is failing -- is this a manifestation of PR kern/56962?

To: tech-kern%netbsd.org@localhost
Subject: devsw_detach is failing -- is this a manifestation of PR kern/56962?
From: Brian Buhrow <buhrow%nfbcal.org@localhost>
Date: Wed, 1 Feb 2023 23:24:53 -0800

	Hello.  I've found that after I perform a modunload on the module I'm working on, I cannot
then modload the module because devsw_attach fails to attach the same module again.  And, yes,
the module calls devsw_detach before it unloads.

	
	I'm runing NetBSD-9.99.77, which predates the pr kern/56962 fixes.  Is this behavior
expected prior to the fix for this bug or am I running into something else?

-thanks
-Brian

Follow-Ups:
- Re: devsw_detach is failing -- is this a manifestation of PR kern/56962?
  - From: Brian Buhrow
- Re: devsw_detach is failing -- is this a manifestation of PR kern/56962?
  - From: Taylor R Campbell

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