linux-kernel - Re: [LINUX PATCH v18 1/2] mtd: rawnand: nand_micron: Do not over write driver's read_page()/write

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Message-ID: <20190716094450.122ba6e7@pc-375.home>
Date:   Tue, 16 Jul 2019 09:44:50 +0200
From:   Boris Brezillon <boris.brezillon@...labora.com>
To:     Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>
Cc:     miquel.raynal@...tlin.com, bbrezillon@...nel.org, richard@....at,
        dwmw2@...radead.org, computersforpeace@...il.com,
        marek.vasut@...il.com, vigneshr@...com,
        yamada.masahiro@...ionext.com, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org, michal.simek@...inx.com,
        svemula@...inx.com, nagasuresh12@...il.com
Subject: Re: [LINUX PATCH v18 1/2] mtd: rawnand: nand_micron: Do not over
 write driver's read_page()/write_page()

On Tue, 16 Jul 2019 09:31:37 +0200
Boris Brezillon <boris.brezillon@...labora.com> wrote:

> On Mon, 15 Jul 2019 23:30:51 -0600
> Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com> wrote:
> 
> > Add check before assigning chip->ecc.read_page() and chip->ecc.write_page()
> > 
> > Signed-off-by: Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>
> > ---
> > Changes in v18
> >  - None
> > ---
> >  drivers/mtd/nand/raw/nand_micron.c | 7 +++++--
> >  1 file changed, 5 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c
> > index cbd4f09ac178..565f2696c747 100644
> > --- a/drivers/mtd/nand/raw/nand_micron.c
> > +++ b/drivers/mtd/nand/raw/nand_micron.c
> > @@ -500,8 +500,11 @@ static int micron_nand_init(struct nand_chip *chip)
> >  		chip->ecc.size = 512;
> >  		chip->ecc.strength = chip->base.eccreq.strength;
> >  		chip->ecc.algo = NAND_ECC_BCH;
> > -		chip->ecc.read_page = micron_nand_read_page_on_die_ecc;
> > -		chip->ecc.write_page = micron_nand_write_page_on_die_ecc;
> > +		if (!chip->ecc.read_page)
> > +			chip->ecc.read_page = micron_nand_read_page_on_die_ecc;
> > +
> > +		if (!chip->ecc.write_page)
> > +			chip->ecc.write_page = micron_nand_write_page_on_die_ecc;
> >    
> 
> Seriously?! I told you this was inappropriate and you keep sending this
> patch. So let's make it clear:
> 
> Nacked-by: Boris Brezillon <boris.brezillon@...labora.com>
> 
> Fix your controller driver instead of adding hacks to the Micron logic!

Not even going to review the other patch: if you have to do that, that
means the driver is broken. On a side note, this patch series is still
not threaded as it should be and it's a v18 for a damn NAND controller
driver! Sorry but you reached the limit of my patience. Please find
someone to help you with that task.