netdev - Re: [PATCH] mISDN: remove unneeded mISDN_class

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Message-ID: <ZCU4BQ0C4K6HoBsf@corigine.com>
Date:   Thu, 30 Mar 2023 09:19:33 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, Karsten Keil <isdn@...ux-pingi.de>,
        netdev@...r.kernel.org
Subject: Re: [PATCH] mISDN: remove unneeded mISDN_class_release()

On Thu, Mar 30, 2023 at 08:01:07AM +0200, Greg Kroah-Hartman wrote:
> On Wed, Mar 29, 2023 at 09:39:30PM +0200, Simon Horman wrote:
> > On Wed, Mar 29, 2023 at 08:01:27AM +0200, Greg Kroah-Hartman wrote:
> > > The mISDN_class_release() is not needed at all, as the class structure
> > > is static, and it does not actually do anything either, so it is safe to
> > > remove as struct class does not require a release callback.
> > > 
> > > Cc: Karsten Keil <isdn@...ux-pingi.de>
> > > Cc: netdev@...r.kernel.org
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > ---
> > > Note: I would like to take this through the driver-core tree as I have
> > > later struct class cleanups that depend on this change being made to the
> > > tree if that's ok with the maintainer of this file.
> > > 
> > >  drivers/isdn/mISDN/core.c | 6 ------
> > >  1 file changed, 6 deletions(-)
> > 
> > I assume this will hit the following in drivers/base/class.c:class_release():
> > 
> >         if (class->class_release)
> >                 class->class_release(class);
> >         else
> > 		pr_debug("class '%s' does not have a release() function, "
> > 		"be careful\n", class->name);
> > 
> > So I also assume that you are being careful :)
> 
> Yes, I am :)
> 
> I need to remove that debug line soon as I'm moving all struct class
> instances to be static and in read-only memory, which would mean that no
> release function is needed at all for them.  Give me a few hundred more
> commits to get there...

Excellent, good luck with your journey of a few hundred patches.