Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Sat, 26 May 2018 10:58:38 +0200
From:   Miquel Raynal <miquel.raynal@bootlin.com>
To:     Abhishek Sahu <absahu@codeaurora.org>
Cc:     Boris Brezillon <boris.brezillon@bootlin.com>,
        David Woodhouse <dwmw2@infradead.org>,
        Brian Norris <computersforpeace@gmail.com>,
        Marek Vasut <marek.vasut@gmail.com>,
        Richard Weinberger <richard@nod.at>,
        Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mtd@lists.infradead.org, Andy Gross <andy.gross@linaro.org>,
        Archit Taneja <architt@codeaurora.org>
Subject: Re: [PATCH v3 13/16] mtd: rawnand: qcom: minor code reorganization
 for bad block check
Message-ID: <20180526104900.139dd19b@xps13>
In-Reply-To: <1527250904-21988-14-git-send-email-absahu@codeaurora.org>
References: <1527250904-21988-1-git-send-email-absahu@codeaurora.org>
        <1527250904-21988-14-git-send-email-absahu@codeaurora.org>
Organization: Bootlin
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8BIT
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi Abhishek,


> @@ -2141,12 +2127,10 @@ static int qcom_nandc_block_bad(struct mtd_info *mtd, loff_t ofs)
>  		goto err;
>  	}
>  
> -	bbpos = mtd->writesize - host->cw_size * (ecc->steps - 1);
> -
> -	bad = nandc->data_buffer[bbpos] != 0xff;
> +	bad = bbm_bytes_buf[0] != 0xff;

BTW, as there are host->bbm_size bytes that can inform on the block
state, don't we need to check all of them?

>  
>  	if (chip->options & NAND_BUSWIDTH_16)
> -		bad = bad || (nandc->data_buffer[bbpos + 1] != 0xff);
> +		bad = bad || (bbm_bytes_buf[1] != 0xff);
>  err:
>  	return bad;
>  }

Thanks,
Miquèl