target/linux/lantiq/patches-4.19/0022-MTD-m25p80-allow-loading-mtd-name-from-OF.patch

   1 From 4400e1f593ea40a51912128adb4f53d59e62cad8 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Wed, 10 Sep 2014 22:40:18 +0200
   4 Subject: [PATCH 22/36] MTD: m25p80: allow loading mtd name from OF
   5
   6 In accordance with the physmap flash we should honour the linux,mtd-name
   7 property when deciding what name the mtd device has.
   8
   9 Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
  10 Signed-off-by: John Crispin <blogic@openwrt.org>
  11 ---
  12  drivers/mtd/devices/m25p80.c |    6 ++++++
  13  1 file changed, 6 insertions(+)
  14
  15 --- a/drivers/mtd/devices/m25p80.c
  16 +++ b/drivers/mtd/devices/m25p80.c
  17 @@ -19,6 +19,7 @@
  18  #include <linux/errno.h>
  19  #include <linux/module.h>
  20  #include <linux/device.h>
  21 +#include <linux/of.h>
  22
  23  #include <linux/mtd/mtd.h>
  24  #include <linux/mtd/partitions.h>
  25 @@ -173,6 +174,10 @@ static int m25p_probe(struct spi_mem *sp
  26         };
  27         char *flash_name;
  28         int ret;
  29 +       const char __maybe_unused       *of_mtd_name = NULL;
  30 +
  31 +       of_property_read_string(spi->dev.of_node,
  32 +               "linux,mtd-name", &of_mtd_name);
  33
  34         data = dev_get_platdata(&spimem->spi->dev);
  35
  36 @@ -211,6 +216,8 @@ static int m25p_probe(struct spi_mem *sp
  37
  38         if (data && data->name)
  39                 nor->mtd.name = data->name;
  40 +       else if (of_mtd_name)
  41 +               nor->mtd.name = of_mtd_name;
  42
  43         if (!nor->mtd.name)
  44                 nor->mtd.name = spi_mem_get_name(spimem);