linux-kernel - Re: [PATCH v2 07/14] mtd: rawnand: qcom: fix null pointer access for erased page detection

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Date:   Tue, 22 May 2018 09:16:47 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Abhishek Sahu <absahu@...eaurora.org>
Cc:     Boris Brezillon <boris.brezillon@...tlin.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org, Andy Gross <andy.gross@...aro.org>,
        Archit Taneja <architt@...eaurora.org>
Subject: Re: [PATCH v2 07/14] mtd: rawnand: qcom: fix null pointer access
 for erased page detection

Hi Abhishek,

On Thu,  3 May 2018 17:50:34 +0530, Abhishek Sahu
<absahu@...eaurora.org> wrote:

> parse_read_errors can be called with only oob_buf in which case
> data_buf will be NULL.  If data_buf is NULL, then don’t
> treat this page as completely erased in case of ECC uncorrectable
> error for RS ECC. For BCH ECC, the controller itself tells
> regarding erased page in status register.
> 
> Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>
> ---
> * Changes from v1:
> 
>   1. Added more detail in commit message
>   2. Added comment before each if/else

Again, thanks for that.

> 
>  drivers/mtd/nand/raw/qcom_nandc.c | 18 +++++++++++++++---
>  1 file changed, 15 insertions(+), 3 deletions(-)

Acked-by: Miquel Raynal <miquel.raynal@...tlin.com>



-- 
Miquel Raynal, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com