linux-kernel - Re: [PATCH v4 19/35] mtd: rawnand: sh_flctl: move all NAND chip related setup in one function

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Message-ID: <20180721194829.44e9b29f@bbrezillon>
Date:   Sat, 21 Jul 2018 19:48:29 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Wenyou Yang <wenyou.yang@...rochip.com>,
        Josh Wu <rainyfeeling@...look.com>,
        Tudor Ambarus <Tudor.Ambarus@...rochip.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Han Xu <han.xu@....com>,
        Harvey Hunt <harveyhuntnexus@...il.com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        Xiaolei Li <xiaolei.li@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Mans Rullgard <mans@...sr.com>, Stefan Agner <stefan@...er.ch>,
        linux-mtd@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v4 19/35] mtd: rawnand: sh_flctl: move all NAND chip
 related setup in one function

On Fri, 20 Jul 2018 17:15:11 +0200
Miquel Raynal <miquel.raynal@...tlin.com> wrote:

> @@ -1007,6 +1007,16 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
>  	struct sh_flctl *flctl = mtd_to_flctl(mtd);
>  	struct nand_chip *chip = &flctl->chip;
>  
> +	if (chip->options & NAND_BUSWIDTH_16) {
> +		/*
> +		 * NAND_BUSWIDTH_16 may have been set by nand_scan_ident().
> +		 * Add the SEL_16BIT flag in pdata->flcmncr_val and re-assign
> +		 * flctl->flcmncr_base to pdata->flcmncr_val.
> +		 */
> +		flctl->pdata->flcmncr_val |= SEL_16BIT;
> +		flctl->flcmncr_base = flctl->pdata->flcmncr_val;

pdata->flcmncr_val is not used after this point. I think you can just do

		flctl->flcmncr_base |= SEL_16BIT;

and get rid of the ftcl->pdata field you add in this patch.

> +	}
> +