target/linux/generic/backport-5.10/406-v5.13-0001-mtd-core-add-nvmem-cells-compatible-to-parse-mtd-as-.patch

   1 From a5d83d6e2bc747b13f347962d4b335d70b23559b Mon Sep 17 00:00:00 2001
   2 From: Ansuel Smith <ansuelsmth@gmail.com>
   3 Date: Fri, 12 Mar 2021 07:28:19 +0100
   4 Subject: [PATCH] mtd: core: add nvmem-cells compatible to parse mtd as nvmem
   5  cells
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Partitions that contains the nvmem-cells compatible will register
  11 their direct subonodes as nvmem cells and the node will be treated as a
  12 nvmem provider.
  13
  14 Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
  15 Tested-by: Rafał Miłecki <rafal@milecki.pl>
  16 ---
  17  drivers/mtd/mtdcore.c | 3 ++-
  18  1 file changed, 2 insertions(+), 1 deletion(-)
  19
  20 --- a/drivers/mtd/mtdcore.c
  21 +++ b/drivers/mtd/mtdcore.c
  22 @@ -531,6 +531,7 @@ static int mtd_nvmem_reg_read(void *priv
  23
  24  static int mtd_nvmem_add(struct mtd_info *mtd)
  25  {
  26 +       struct device_node *node = mtd_get_of_node(mtd);
  27         struct nvmem_config config = {};
  28
  29         config.id = -1;
  30 @@ -543,7 +544,7 @@ static int mtd_nvmem_add(struct mtd_info
  31         config.stride = 1;
  32         config.read_only = true;
  33         config.root_only = true;
  34 -       config.no_of_node = true;
  35 +       config.no_of_node = !of_device_is_compatible(node, "nvmem-cells");
  36         config.priv = mtd;
  37
  38         mtd->nvmem = nvmem_register(&config);