Re: [PATCH 18/27] mtd: nand: update mtd_to_nand()

[Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>]

On Mon, 16 Nov 2015 19:03:53 -0800
Brian Norris <computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> On Mon, Nov 16, 2015 at 02:37:51PM +0100, Boris Brezillon wrote:
> > Now that all drivers are using the mtd instance embedded in the nand_chip
> 
> Do you have a script that verifies this? I thought you did at some
> point, and it'd be nice to note it, so I can also use it to verify
> things once it gets applied.

No, didn't write that script, but it should probably look like the one
I used to remove the mtd field from driver private struct.

> 
> > struct we can safely update the mtd_to_nand_chip() implementation to use
> 
> Nit: s/mtd_to_nand_chip/mtd_to_nand/

Yep, I'll fix that.

> 
> > the container_of macro instead of returning the content of mtd->priv.
> > This will allow us to remove mtd->priv = chip assignments done in all
> > NAND controller drivers.
> > 
> > Signed-off-by: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > ---
> >  include/linux/mtd/nand.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
> > index 8ec071e..873646d 100644
> > --- a/include/linux/mtd/nand.h
> > +++ b/include/linux/mtd/nand.h
> > @@ -734,7 +734,7 @@ static inline struct device_node *nand_get_flash_node(struct nand_chip *chip)
> >  
> >  static inline struct nand_chip *mtd_to_nand(struct mtd_info *mtd)
> >  {
> > -	return mtd->priv;
> > +	return container_of(mtd, struct nand_chip, mtd);
> >  }
> >  
> >  static inline struct mtd_info *nand_to_mtd(struct nand_chip *chip)
> > -- 
> > 2.1.4
> > 



-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com