Re: [PATCH 02/27] mtd: nand: add an mtd_to_nand() helper

[Brian Norris]

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
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[PATCH 02/27] mtd: nand: add an mtd_to_nand() helper

[Boris Brezillon]

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;
+}
+
 /*
  * NAND Flash Manufacturer ID Codes
  */
-- 
2.1.4

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