linux-kernel - Re: [PATCH v3 25/37] mtd: nand: denali: switch over to cmd

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Message-ID: <20170330175544.4459007f@bbrezillon>
Date:   Thu, 30 Mar 2017 17:55:44 +0200
From:   Boris Brezillon <boris.brezillon@...e-electrons.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     linux-mtd@...ts.infradead.org, Enrico Jorns <ejo@...gutronix.de>,
        Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Graham Moore <grmoore@...nsource.altera.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Chuanxiao Dong <chuanxiao.dong@...el.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        linux-kernel@...r.kernel.org,
        Brian Norris <computersforpeace@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>
Subject: Re: [PATCH v3 25/37] mtd: nand: denali: switch over to cmd_ctrl
 instead of cmdfunc

On Thu, 30 Mar 2017 15:46:11 +0900
Masahiro Yamada <yamada.masahiro@...ionext.com> wrote:


>  /*
>   * sends a pipeline command operation to the controller. See the Denali NAND
>   * controller's user guide for more information (section 4.2.3.6).
> @@ -824,7 +856,13 @@ static void denali_select_chip(struct mtd_info *mtd, int chip)
>  
>  static int denali_waitfunc(struct mtd_info *mtd, struct nand_chip *chip)
>  {
> -	return 0;
> +	struct denali_nand_info *denali = mtd_to_denali(mtd);
> +	uint32_t irq_status;
> +
> +	/* R/B# pin transitioned from low to high? */
> +	irq_status = denali_wait_for_irq(denali, INTR__INT_ACT);
> +
> +	return irq_status & INTR__INT_ACT ? 0 : NAND_STATUS_FAIL;

Okay, you fix the ->waitfunc() implementation here. Great! Then I'm
fine with patch 18.

>  }