Subject: Re: [PATCH] mtd: rawnand: marvell: select target before setting up data interface

From: Boris Brezillon <[email-masked]>
Date: Fri, 22 Mar 2019 10:05:14 +0100

On Fri, 22 Mar 2019 09:30:46 +0100
Miquel Raynal <[email-masked]> wrote:

> Hi Daniel,
> 
> + Richard: this is fixes materials
> 
> Daniel Mack <[email-masked]> wrote on Thu, 21 Mar 2019 22:20:10
> +0100:
> 
> > Now that the nand drivers are responsible for selecting the target
> > prior to hardware access, a call to marvell_nfc_select_target() is
> > necessary from marvell_nfc_setup_data_interface().
> > 
> > This is a regression introduced by commit b25251414f6e ("mtd:
> > rawnand: marvell: Stop implementing ->select_chip()").
> > 
> > Fixes: b25251414f6e ("mtd: rawnand: marvell: Stop implementing ->select_chip()")
> > Cc: Boris Brezillon <[email-masked]>
> > Cc: <[email-masked]>
> > Signed-off-by: Daniel Mack <[email-masked]>
> > ---
> >  drivers/mtd/nand/raw/marvell_nand.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c
> > index 84283c6bb0ff..93abe5be8995 100644
> > --- a/drivers/mtd/nand/raw/marvell_nand.c
> > +++ b/drivers/mtd/nand/raw/marvell_nand.c
> > @@ -2325,6 +2325,8 @@ static int marvell_nfc_setup_data_interface(struct nand_chip *chip, int chipnr,
> >  	struct marvell_nfc_timings nfc_tmg;
> >  	int read_delay;
> >  
> > +	marvell_nfc_select_target(chip, chip->cur_cs);

Maybe s/chip->cur_cs/chipnr/

> > +
> >  	sdr = nand_get_sdr_timings(conf);
> >  	if (IS_ERR(sdr))
> >  		return PTR_ERR(sdr);  
> 
> I had a short look yesterday and this is very likely to be the root
> cause of the regression, thank you very much!
> 
> Acked-by: Miquel Raynal <[email-masked]>
> 
> 
> Thanks,
> Miquèl

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