linux-kernel - Re: linux-next: build failure after merge of the mtd-fixes tree

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Date:   Mon, 18 May 2020 09:45:19 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Richard Weinberger <richard.weinberger@...il.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Richard Weinberger <richard@....at>
Subject: Re: linux-next: build failure after merge of the mtd-fixes tree

Hi Richard,

Richard Weinberger <richard.weinberger@...il.com> wrote on Mon, 18 May
2020 01:02:54 +0200:

> On Mon, May 18, 2020 at 12:41 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > Hi all,
> >
> > After merging the mtd-fixes tree, today's linux-next build (x86_64
> > allmodconfig) failed like this:
> >
> > /home/sfr/next/next/drivers/mtd/nand/spi/core.c: In function 'spinand_init':
> > /home/sfr/next/next/drivers/mtd/nand/spi/core.c:1093:26: error: 'struct nand_device' has no member named 'ecc'
> >  1093 |  mtd->ecc_strength = nand->ecc.ctx.conf.strength;
> >       |                          ^~
> > /home/sfr/next/next/drivers/mtd/nand/spi/core.c:1094:27: error: 'struct nand_device' has no member named 'ecc'
> >  1094 |  mtd->ecc_step_size = nand->ecc.ctx.conf.step_size;
> >       |                           ^~
> >
> > Caused by commit
> >
> >   d5baa0ec83de ("mtd: spinand: Propagate ECC information to the MTD structure")
> >
> > "This fix depends on recent changes and should not be backported as-is." ?  
> 
> Urgh, yes.
> This patch slipped in.
> 
> Anyway, Miquel, the ready-to-backport diff would be this?
> 
> diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
> index 248c4d7a0cf4..e2c382ffc5b6 100644
> --- a/drivers/mtd/nand/spi/core.c
> +++ b/drivers/mtd/nand/spi/core.c
> @@ -1090,8 +1090,8 @@ static int spinand_init(struct spinand_device *spinand)
>         mtd->oobavail = ret;
> 
>         /* Propagate ECC information to mtd_info */
> -       mtd->ecc_strength = nand->ecc.ctx.conf.strength;
> -       mtd->ecc_step_size = nand->ecc.ctx.conf.step_size;
> +       mtd->ecc_strength = nand->eccreq.strength;
> +       mtd->ecc_step_size = nand->eccreq.step_size;

Indeed, sorry for the confusion, this is fine.

Thanks,
Miquèl