linux-kernel - Re: [PATCH 4.19 089/219] ipmi: Dont allow device module unload when in use

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Date:   Mon, 30 Dec 2019 11:32:18 +0100
From:   Pavel Machek <pavel@...x.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        tony camuso <tcamuso@...hat.com>,
        Corey Minyard <cminyard@...sta.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 4.19 089/219] ipmi: Dont allow device module unload when
 in use

On Sun 2019-12-29 18:18:11, Greg Kroah-Hartman wrote:
> From: Corey Minyard <cminyard@...sta.com>
> 
> [ Upstream commit cbb79863fc3175ed5ac506465948b02a893a8235 ]
> 
> If something has the IPMI driver open, don't allow the device
> module to be unloaded.  Before it would unload and the user would
> get errors on use.
> 
> This change is made on user request, and it makes it consistent
> with the I2C driver, which has the same behavior.
> 
> It does change things a little bit with respect to kernel users.
> If the ACPI or IPMI watchdog (or any other kernel user) has
> created a user, then the device module cannot be unloaded.  Before
> it could be unloaded,
> 
> This does not affect hot-plug.  If the device goes away (it's on
> something removable that is removed or is hot-removed via sysfs)
> then it still behaves as it did before.

I don't think this is good idea for stable. First, it includes
unrelated function rename, and second, it does not really fix any bug;
it just changes behaviour.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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