linux-kernel - Re: [PATCH] kdbus: Make kdbus_bus

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Message-ID: <20150422121219.GC17830@distanz.ch>
Date:	Wed, 22 Apr 2015 14:12:19 +0200
From:	Tobias Klauser <tklauser@...tanz.ch>
To:	David Herrmann <dh.herrmann@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Daniel Mack <daniel@...que.org>,
	David Herrmann <dh.herrmann@...glemail.com>,
	Djalal Harouni <tixxdz@...ndz.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kdbus: Make kdbus_bus_unref() return void

On 2015-04-22 at 14:01:05 +0200, David Herrmann <dh.herrmann@...il.com> wrote:
> Hi
> 
> On Wed, Apr 22, 2015 at 1:50 PM, Tobias Klauser <tklauser@...tanz.ch> wrote:
> > kdbus_bus_unref() always returns NULL and none of its callers use the
> > return value, so make it return void.
> >
> > Signed-off-by: Tobias Klauser <tklauser@...tanz.ch>
> 
> All our destructors return NULL, which allows simple assignment during
> destruction:
>   foo->bus = kdbus_bus_unref(foo->bus);
> And our destructors ignore NULL, so no reason to conditionalize the
> call to unref(). This simplifies our error-paths a lot, and I'd like
> to keep it that way.

Thanks for the explanation. I didn't consider this - and didn't even
look at the other *_unref() for that matter :(
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