[PATCH] mtd: Add partition device node to mtd partition devices

[Boris Brezillon]

+Moritz

On Thu,  9 Feb 2017 11:50:24 +0100
Uwe Kleine-König <u.kleine-koenig at pengutronix.de> wrote:

> From: Sascha Hauer <s.hauer at pengutronix.de>
> 
> The user visible change here is that mtd partitions get an of_node link
> in sysfs.

The same patch has already been posted last year [1].
Brian, can we take one of these?

[1]https://patchwork.ozlabs.org/patch/625978/

> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---
>  drivers/mtd/mtdpart.c          | 1 +
>  drivers/mtd/ofpart.c           | 1 +
>  include/linux/mtd/partitions.h | 1 +
>  3 files changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
> index fccdd49bb964..d0b919ab85c0 100644
> --- a/drivers/mtd/mtdpart.c
> +++ b/drivers/mtd/mtdpart.c
> @@ -424,6 +424,7 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
>  	slave->mtd.dev.parent = IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) ?
>  				&master->dev :
>  				master->dev.parent;
> +	slave->mtd.dev.of_node = part->of_node;
>  
>  	slave->mtd._read = part_read;
>  	slave->mtd._write = part_write;
> diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
> index ede407d6e106..464470122493 100644
> --- a/drivers/mtd/ofpart.c
> +++ b/drivers/mtd/ofpart.c
> @@ -108,6 +108,7 @@ static int parse_ofpart_partitions(struct mtd_info *master,
>  
>  		parts[i].offset = of_read_number(reg, a_cells);
>  		parts[i].size = of_read_number(reg + a_cells, s_cells);
> +		parts[i].of_node = pp;
>  
>  		partname = of_get_property(pp, "label", &len);
>  		if (!partname)
> diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
> index 70736e1e6c8f..06df1e06b6e0 100644
> --- a/include/linux/mtd/partitions.h
> +++ b/include/linux/mtd/partitions.h
> @@ -41,6 +41,7 @@ struct mtd_partition {
>  	uint64_t size;			/* partition size */
>  	uint64_t offset;		/* offset within the master MTD space */
>  	uint32_t mask_flags;		/* master MTD flags to mask out for this partition */
> +	struct device_node *of_node;
>  };
>  
>  #define MTDPART_OFS_RETAIN	(-3)