git.openwrt.org Git - openwrt/staging/yousong.git/blob

   1 From 42e9401bd1467d22c4dc4d2c637347b874e6a80b Mon Sep 17 00:00:00 2001
   2 From: Sascha Hauer <s.hauer@pengutronix.de>
   3 Date: Thu, 9 Feb 2017 11:50:24 +0100
   4 Subject: [PATCH] mtd: Add partition device node to mtd partition devices
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 The user visible change here is that mtd partitions get an of_node link
  10 in sysfs.
  11
  12 Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
  13 Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
  14 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
  15 ---
  16  drivers/mtd/mtdpart.c          | 1 +
  17  drivers/mtd/ofpart.c           | 1 +
  18  include/linux/mtd/partitions.h | 1 +
  19  3 files changed, 3 insertions(+)
  20
  21 --- a/drivers/mtd/mtdpart.c
  22 +++ b/drivers/mtd/mtdpart.c
  23 @@ -432,6 +432,7 @@ static struct mtd_part *allocate_partiti
  24         slave->mtd.dev.parent = IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) ?
  25                                 &master->dev :
  26                                 master->dev.parent;
  27 +       slave->mtd.dev.of_node = part->of_node;
  28
  29         slave->mtd._read = part_read;
  30         slave->mtd._write = part_write;
  31 --- a/drivers/mtd/ofpart.c
  32 +++ b/drivers/mtd/ofpart.c
  33 @@ -108,6 +108,7 @@ static int parse_ofpart_partitions(struc
  34
  35                 parts[i].offset = of_read_number(reg, a_cells);
  36                 parts[i].size = of_read_number(reg + a_cells, s_cells);
  37 +               parts[i].of_node = pp;
  38
  39                 partname = of_get_property(pp, "label", &len);
  40                 if (!partname)
  41 --- a/include/linux/mtd/partitions.h
  42 +++ b/include/linux/mtd/partitions.h
  43 @@ -41,6 +41,7 @@ struct mtd_partition {
  44         uint64_t size;                  /* partition size */
  45         uint64_t offset;                /* offset within the master MTD space */
  46         uint32_t mask_flags;            /* master MTD flags to mask out for this partition */
  47 +       struct device_node *of_node;
  48  };
  49
  50  #define MTDPART_OFS_RETAIN     (-3)