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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Kamal Dasu <kdasu.kdev@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	MTD Maling List <linux-mtd@lists.infradead.org>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@broadcom.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] mtd: rawnand: brcmnand: Don't default to edu transfer
Date: Thu, 11 Jun 2020 17:24:17 +0200	[thread overview]
Message-ID: <20200611172417.66eb6c3b@xps13> (raw)
In-Reply-To: <CAC=U0a0ReuPpxZjB2vV_YNynrMx4OjzPmPPyJeVbhueFgFeNbQ@mail.gmail.com>

Hi Kamal,

Kamal Dasu <kdasu.kdev@gmail.com> wrote on Thu, 11 Jun 2020 11:22:56
-0400:

> On Thu, Jun 11, 2020 at 3:16 AM Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> >
> > Hi Kamal,
> >
> > Kamal Dasu <kdasu.kdev@gmail.com> wrote on Thu, 11 Jun 2020 01:44:53
> > -0400:
> >  
> > > When flash-dma is absent do not default to using flash-edu.
> > > Make sure flash-edu is enabled before setting EDU transfer
> > > function.
> > >
> > > Fixes: a5d53ad26a8b ("mtd: rawnand: brcmnand: Add support for flash-edu for dma transfers")
> > > Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
> > > ---
> > >  drivers/mtd/nand/raw/brcmnand/brcmnand.c | 5 +++--
> > >  1 file changed, 3 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> > > index 8f9ffb46a09f..0c1d6e543586 100644
> > > --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> > > +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> > > @@ -2953,8 +2953,9 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc)
> > >               if (ret < 0)
> > >                       goto err;
> > >
> > > -             /* set edu transfer function to call */
> > > -             ctrl->dma_trans = brcmnand_edu_trans;
> > > +             if (has_edu(ctrl))
> > > +                     /* set edu transfer function to call */
> > > +                     ctrl->dma_trans = brcmnand_edu_trans;  
> >
> > Does this fallback to returning an error in case !has_edu() ? Othewise,
> > how is it handled?
> >  
> 
>  The driver will default to pio if both flash-dma and falsh-edu are
> not present.
> 
> > Thanks,
> > Miquèl  
> 
> Kamal


Ok, thanks for the clarification!

Thanks,
Miquèl

      reply	other threads:[~2020-06-11 15:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-11  5:44 Kamal Dasu
2020-06-11  5:44 ` [PATCH 2/2] mtd: rawnand: brcmnand: Ecc error handling on EDU transfers Kamal Dasu
2020-06-11  7:27   ` Miquel Raynal
2020-06-11 16:04     ` Kamal Dasu
2020-06-12  7:07       ` Miquel Raynal
2020-06-12 16:34         ` Kamal Dasu
2020-06-15  7:19           ` Miquel Raynal
2020-06-15 15:11             ` Kamal Dasu
2020-06-15 17:37               ` Miquel Raynal
2020-06-11  7:16 ` [PATCH 1/2] mtd: rawnand: brcmnand: Don't default to edu transfer Miquel Raynal
2020-06-11 15:22   ` Kamal Dasu
2020-06-11 15:24     ` Miquel Raynal [this message]

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