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Date: Thu, 30 Nov 2017 22:16:43 +0100
From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Cc: Han Xu <han.xu@nxp.com>, Richard Weinberger <richard@nod.at>, David
 Woodhouse <dwmw2@infradead.org>, Brian Norris
 <computersforpeace@gmail.com>, Marek Vasut <marek.vasut@gmail.com>, Cyrille
 Pitchen <cyrille.pitchen@wedev4u.fr>, linux-mtd@lists.infradead.org,
 linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mtd: nand: gpmi: replace _manual_ swap with swap macro
Message-ID: <20171130221643.65f79c58@bbrezillon>
In-Reply-To: <20171103203147.GA28309@embeddedor.com>
References: <20171103203147.GA28309@embeddedor.com>
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On Fri, 3 Nov 2017 15:31:47 -0500
"Gustavo A. R. Silva" <garsilva@embeddedor.com> wrote:

> Make use of the swap macro and remove unnecessary variables swap.
> This makes the code easier to read and maintain.
> 
> This code was detected with the help of Coccinelle.

Applied.

Thanks,

Boris

> 
> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
> ---
>  drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 16 ++++------------
>  1 file changed, 4 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
> index 50f8d4a..9e365d4 100644
> --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
> +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
> @@ -1487,12 +1487,8 @@ static int gpmi_ecc_read_page_raw(struct mtd_info *mtd,
>  	 * See the layout description for a detailed explanation on why this
>  	 * is needed.
>  	 */
> -	if (this->swap_block_mark) {
> -		u8 swap = tmp_buf[0];
> -
> -		tmp_buf[0] = tmp_buf[mtd->writesize];
> -		tmp_buf[mtd->writesize] = swap;
> -	}
> +	if (this->swap_block_mark)
> +		swap(tmp_buf[0], tmp_buf[mtd->writesize]);
>  
>  	/*
>  	 * Copy the metadata section into the oob buffer (this section is
> @@ -1615,12 +1611,8 @@ static int gpmi_ecc_write_page_raw(struct mtd_info *mtd,
>  	 * See the layout description for a detailed explanation on why this
>  	 * is needed.
>  	 */
> -	if (this->swap_block_mark) {
> -		u8 swap = tmp_buf[0];
> -
> -		tmp_buf[0] = tmp_buf[mtd->writesize];
> -		tmp_buf[mtd->writesize] = swap;
> -	}
> +	if (this->swap_block_mark)
> +		swap(tmp_buf[0], tmp_buf[mtd->writesize]);
>  
>  	chip->write_buf(mtd, tmp_buf, mtd->writesize + mtd->oobsize);
>