linux-kernel - Re: [PATCH 1/2] ALSA: core: remove initialise static variables to 0

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Message-ID: <5aae43769bced6d5c17f143332004285af6d1c4d.camel@perches.com>
Date:   Sat, 26 Feb 2022 23:47:51 -0800
From:   Joe Perches <joe@...ches.com>
To:     Meng Tang <tangmeng@...ontech.com>, perex@...ex.cz, tiwai@...e.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ALSA: core: remove initialise static variables to 0

On Sun, 2022-02-27 at 15:12 +0800, Meng Tang wrote:
> Initializing the static variable to 0 causes the following error
> when exec checkpatch:
> 
> ERROR: do not initialise statics to 0
> FILE: sound/sound_core.c:142:
> static int preclaim_oss = 0;
> 
> Static variable does not need to be initialised to 0, because
> compiler will initialise all uninitialised statics to 0. Thus,
> remove the unneeded initializations.
[]
> diff --git a/sound/sound_core.c b/sound/sound_core.c
[]
> @@ -139,7 +139,7 @@ struct sound_unit
>  #ifdef CONFIG_SOUND_OSS_CORE_PRECLAIM
>  static int preclaim_oss = 1;
>  #else
> -static int preclaim_oss = 0;
> +static int preclaim_oss;
>  #endif

Probably better without the #ifdef / #else / #endif as

static int preclaim_oss = IS_ENABLED(CONFIG_SOUND_OSS_CORE_PRECLAIM);