linux-kernel - Re: [PATCH] ALSA: declare snd_kcontrol

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Message-ID: <s5hvaoiencx.wl-tiwai@suse.de>
Date:   Tue, 30 May 2017 10:54:22 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     "Bhumika Goyal" <bhumirks@...il.com>
Cc:     <alsa-devel@...a-project.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <clemens@...isch.de>, <julia.lawall@...6.fr>,
        <linuxppc-dev@...ts.ozlabs.org>, <perex@...ex.cz>,
        <johannes@...solutions.net>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ALSA: declare snd_kcontrol_new structures as const

On Sat, 27 May 2017 16:46:15 +0200,
Bhumika Goyal wrote:
> 
> Declare snd_kcontrol_new structures as const as they are only passed an
> argument to the function snd_ctl_new1. This argument is of type const,
> so snd_kcontrol_new structures having this property can be made const.
> Done using Coccinelle:
> 
> @r disable optional_qualifier@
> identifier x;
> position p;
> @@
> static struct snd_kcontrol_new x@......};
> 
> @ok@
> identifier r.x;
> position p;
> @@
> snd_ctl_new1(&x@p,...)
> 
> @bad@
> position p != {r.p,ok.p};
> identifier r.x;
> @@
> x@p
> 
> @depends on !bad disable optional_qualifier@
> identifier r.x;
> @@
> +const
> struct snd_kcontrol_new x;
> 
> Cross compiled these files:
> sound/aoa/codecs/tas.c - powerpc
> sound/mips/{hal2.c/sgio2audio.c} - mips
> sound/ppc/{awacs.c/beep.c/tumbler.c} - powerpc
> sound/soc/sh/siu_dai.c - sh
> Could not find an architecture to compile sound/sh/aica.c.
> 
> Signed-off-by: Bhumika Goyal <bhumirks@...il.com>

Applied now, as it looks safe enough.  But I prefer splitting to
individual patches, so please try to do that at the next time.


thanks,

Takashi