Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751373AbdGQT61 convert rfc822-to-8bit (ORCPT <rfc822;w@1wt.eu>);
        Mon, 17 Jul 2017 15:58:27 -0400
Received: from mail.free-electrons.com ([62.4.15.54]:33760 "EHLO
        mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751316AbdGQT6Z (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 17 Jul 2017 15:58:25 -0400
Date: Mon, 17 Jul 2017 21:58:22 +0200
From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: David Woodhouse <dwmw2@infradead.org>, keescook@chromium.org,
        kernel-janitors@vger.kernel.org,
        Brian Norris <computersforpeace@gmail.com>,
        Marek Vasut <marek.vasut@gmail.com>,
        Richard Weinberger <richard@nod.at>,
        Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
        linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/11] mtd: physmap_of: Drop unnecessary static
Message-ID: <20170717215822.3c7a0d86@bbrezillon>
In-Reply-To: <1500149266-32357-4-git-send-email-Julia.Lawall@lip6.fr>
References: <1500149266-32357-1-git-send-email-Julia.Lawall@lip6.fr>
        <1500149266-32357-4-git-send-email-Julia.Lawall@lip6.fr>
X-Mailer: Claws Mail 3.14.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8BIT
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1310
Lines: 56

Le Sat, 15 Jul 2017 22:07:38 +0200,
Julia Lawall <Julia.Lawall@lip6.fr> a écrit :

> Drop static on a local variable, when the variable is initialized before
> any possible use.  Thus, the static has no benefit.
> 
> The semantic patch that fixes this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @bad exists@
> position p;
> identifier x;
> type T;
> @@
> static T x@p;
> ...
> x = <+...x...+>
> 
> @@
> identifier x;
> expression e;
> type T;
> position p != bad.p;
> @@
> -static
>  T x@p;
>  ... when != x
>      when strict
> ?x = e;
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

> 
> ---
> These patches are all independent of each other.
> 
>  drivers/mtd/maps/physmap_of_versatile.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -u -p a/drivers/mtd/maps/physmap_of_versatile.c b/drivers/mtd/maps/physmap_of_versatile.c
> --- a/drivers/mtd/maps/physmap_of_versatile.c
> +++ b/drivers/mtd/maps/physmap_of_versatile.c
> @@ -97,7 +97,7 @@ static const struct of_device_id ebi_mat
>  static int ap_flash_init(struct platform_device *pdev)
>  {
>  	struct device_node *ebi;
> -	static void __iomem *ebi_base;
> +	void __iomem *ebi_base;
>  	u32 val;
>  	int ret;
>  
>