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Date:   Thu, 9 Jan 2020 20:30:55 +0100
From:   Boris Brezillon <boris.brezillon@collabora.com>
To:     Mason Yang <masonccyang@mxic.com.tw>
Cc:     miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com,
        dwmw2@infradead.org, bbrezillon@kernel.org,
        computersforpeace@gmail.com, vigneshr@ti.com, juliensu@mxic.com.tw,
        linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org
Subject: Re: [PATCH v2 1/4] mtd: rawnand: Add support manufacturer specific
 lock/unlock operatoin
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        <1572256527-5074-2-git-send-email-masonccyang@mxic.com.tw>
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On Mon, 28 Oct 2019 17:55:24 +0800
Mason Yang <masonccyang@mxic.com.tw> wrote:

>  /* Set default functions */
>  static void nand_set_defaults(struct nand_chip *chip)
>  {
> @@ -5782,8 +5810,8 @@ static int nand_scan_tail(struct nand_chip *chip)
>  	mtd->_read_oob = nand_read_oob;
>  	mtd->_write_oob = nand_write_oob;
>  	mtd->_sync = nand_sync;
> -	mtd->_lock = NULL;
> -	mtd->_unlock = NULL;
> +	mtd->_lock = nand_lock;
> +	mtd->_unlock = nand_unlock;
>  	mtd->_suspend = nand_suspend;
>  	mtd->_resume = nand_resume;
>  	mtd->_reboot = nand_shutdown;
> diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
> index 4ab9bcc..2430ecd 100644
> --- a/include/linux/mtd/rawnand.h
> +++ b/include/linux/mtd/rawnand.h
> @@ -1136,6 +1136,9 @@ struct nand_chip {
>  		const struct nand_manufacturer *desc;
>  		void *priv;
>  	} manufacturer;
> +
> +	int (*_lock)(struct nand_chip *chip, loff_t ofs, uint64_t len);
> +	int (*_unlock)(struct nand_chip *chip, loff_t ofs, uint64_t len);

Please drop this _ prefix.

>  };