target/linux/generic/patches-4.9/450-mtd-nand-allow-to-use-platform-specific-chip-fixup.patch

   1 --- a/include/linux/mtd/nand.h  2017-05-25 16:45:05.000000000 +0300
   2 +++ b/include/linux/mtd/nand.h  2017-05-28 09:45:05.016541089 +0300
   3 @@ -1053,6 +1053,7 @@ struct platform_nand_chip {
   4         unsigned int options;
   5         unsigned int bbt_options;
   6         const char **part_probe_types;
   7 +       int (*chip_fixup)(struct mtd_info *mtd);
   8  };
   9
  10  /* Keep gcc happy */
  11 --- a/drivers/mtd/nand/plat_nand.c      2017-05-25 16:45:05.000000000 +0300
  12 +++ b/drivers/mtd/nand/plat_nand.c      2017-05-28 10:01:49.235556815 +0300
  13 @@ -86,11 +86,23 @@ static int plat_nand_probe(struct platfo
  14         }
  15
  16         /* Scan to find existence of the device */
  17 -       if (nand_scan(mtd, pdata->chip.nr_chips)) {
  18 +       if (nand_scan_ident(mtd, pdata->chip.nr_chips, NULL)) {
  19                 err = -ENXIO;
  20                 goto out;
  21         }
  22
  23 +       if (pdata->chip.chip_fixup) {
  24 +               err = pdata->chip.chip_fixup(mtd);
  25 +               if (err)
  26 +                       goto out;
  27 +       }
  28 +
  29 +       if (nand_scan_tail(mtd)) {
  30 +               err = -ENXIO;
  31 +               goto out;
  32 +       }
  33 +
  34 +
  35         part_types = pdata->chip.part_probe_types;
  36
  37         err = mtd_device_parse_register(mtd, part_types, NULL,