target/linux/pistachio/patches-5.15/401-mtd-nor-support-mtd-name-from-device-tree.patch

   1 From f32bc2aa01edcba2f2ed5db151cf183eac9ef919 Mon Sep 17 00:00:00 2001
   2 From: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
   3 Date: Sat, 25 Feb 2017 16:42:50 +0000
   4 Subject: mtd: nor: support mtd name from device tree
   5
   6 Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
   7 ---
   8  drivers/mtd/spi-nor/spi-nor.c | 8 +++++++-
   9  1 file changed, 7 insertions(+), 1 deletion(-)
  10
  11 --- a/drivers/mtd/spi-nor/core.c
  12 +++ b/drivers/mtd/spi-nor/core.c
  13 @@ -3098,6 +3098,7 @@ int spi_nor_scan(struct spi_nor *nor, co
  14         struct device *dev = nor->dev;
  15         struct mtd_info *mtd = &nor->mtd;
  16         struct device_node *np = spi_nor_get_flash_node(nor);
  17 +       const char __maybe_unused *of_mtd_name = NULL;
  18         int ret;
  19         int i;
  20
  21 @@ -3152,7 +3153,12 @@ int spi_nor_scan(struct spi_nor *nor, co
  22         if (ret)
  23                 return ret;
  24
  25 -       if (!mtd->name)
  26 +#ifdef CONFIG_MTD_OF_PARTS
  27 +       of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
  28 +#endif
  29 +       if (of_mtd_name)
  30 +               mtd->name = of_mtd_name;
  31 +       else if (!mtd->name)
  32                 mtd->name = dev_name(dev);
  33         mtd->priv = nor;
  34         mtd->type = MTD_NORFLASH;
  35 --- a/drivers/mtd/mtdcore.c
  36 +++ b/drivers/mtd/mtdcore.c
  37 @@ -847,6 +847,17 @@ out_error:
  38   */
  39  static void mtd_set_dev_defaults(struct mtd_info *mtd)
  40  {
  41 +#ifdef CONFIG_MTD_OF_PARTS
  42 +       const char __maybe_unused *of_mtd_name = NULL;
  43 +       struct device_node *np;
  44 +
  45 +       np = mtd_get_of_node(mtd);
  46 +       if (np && !mtd->name) {
  47 +               of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
  48 +               if (of_mtd_name)
  49 +                       mtd->name = of_mtd_name;
  50 +       } else
  51 +#endif
  52         if (mtd->dev.parent) {
  53                 if (!mtd->owner && mtd->dev.parent->driver)
  54                         mtd->owner = mtd->dev.parent->driver->owner;