From mboxrd@z Thu Jan 1 00:00:00 1970 From: computersforpeace@gmail.com (Brian Norris) Date: Thu, 19 Nov 2015 11:19:24 -0800 Subject: [PATCH 02/27] mtd: nand: add an mtd_to_nand() helper In-Reply-To: <1447681080-31232-3-git-send-email-boris.brezillon@free-electrons.com> References: <1447681080-31232-1-git-send-email-boris.brezillon@free-electrons.com> <1447681080-31232-3-git-send-email-boris.brezillon@free-electrons.com> Message-ID: <20151119191924.GF64635@google.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Nov 16, 2015 at 02:37:35PM +0100, Boris Brezillon wrote: > Some drivers are retrieving the nand_chip pointer using the container_of > macro on a struct wrapping both the nand_chip and the mtd_info struct while > the standard way of retrieving this pointer is through mtd->priv. > Provide an helper to do that. > > Signed-off-by: Boris Brezillon > --- > include/linux/mtd/nand.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h > index 4f7c9b9..056d165 100644 > --- a/include/linux/mtd/nand.h > +++ b/include/linux/mtd/nand.h > @@ -730,6 +730,11 @@ static inline struct device_node *nand_get_flash_node(struct nand_chip *chip) > return chip->flash_node; > } > > +static inline struct nand_chip *mtd_to_nand(struct mtd_info *mtd) > +{ > + return mtd->priv; > +} > + Pushed this patch to l2-mtd.git, though I rebased it directly onto 4.4-rc1 and then merged it in. That way, if any other subsystems want to start using this in the 4.5 -next cycle (e.g., for patches 4-8), they can pull it in without taking the rest of MTD. I can push this to a separate branch or signed tag, if anyone wants. Or, I can take the arch/ patches via MTD, if that's a better option. Brian