target/linux/s3c24xx/patches-2.6.26/0002-gta01-no_nand_partitions.patch.patch

   1 From 1ef4af1f96284576aa9b7f4490c791350c99fffd Mon Sep 17 00:00:00 2001
   2 From: mokopatches <mokopatches@openmoko.org>
   3 Date: Wed, 16 Jul 2008 14:44:10 +0100
   4 Subject: [PATCH] gta01-no_nand_partitions.patch
   5  [PATCH] support mtd NAND commandline partitions for S3C2410
   6
   7 This patch adds support for the mtd NAND core standard method of passing
   8 partition table information from the bootloader into the kernel by using
   9 the kernel commandline.
  10
  11 The board specific code can still manually override and provide a fixed
  12 partition table, so this patch will behave backwards compatible.
  13
  14 Signed-off-by: Harald Welte <laforge@openmoko.org>
  15 Acked-byt: Ben Dooks <ben-linux@fluff.org>
  16 ---
  17  drivers/mtd/nand/s3c2410.c |   18 ++++++++++++++++--
  18  1 files changed, 16 insertions(+), 2 deletions(-)
  19
  20 diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
  21 index b34a460..101b6b5 100644
  22 --- a/drivers/mtd/nand/s3c2410.c
  23 +++ b/drivers/mtd/nand/s3c2410.c
  24 @@ -566,17 +566,31 @@ static int s3c2410_nand_remove(struct platform_device *pdev)
  25  }
  26
  27  #ifdef CONFIG_MTD_PARTITIONS
  28 +const char *part_probes[] = { "cmdlinepart", NULL };
  29  static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info,
  30                                       struct s3c2410_nand_mtd *mtd,
  31                                       struct s3c2410_nand_set *set)
  32  {
  33 +       struct mtd_partition *part_info;
  34 +       int nr_part = 0;
  35 +
  36         if (set == NULL)
  37                 return add_mtd_device(&mtd->mtd);
  38
  39 -       if (set->nr_partitions > 0 && set->partitions != NULL) {
  40 -               return add_mtd_partitions(&mtd->mtd, set->partitions, set->nr_partitions);
  41 +       if (set->nr_partitions == 0) {
  42 +               mtd->mtd.name = set->name;
  43 +               nr_part = parse_mtd_partitions(&mtd->mtd, part_probes,
  44 +                                               &part_info, 0);
  45 +       } else {
  46 +               if (set->nr_partitions > 0 && set->partitions != NULL) {
  47 +                       nr_part = set->nr_partitions;
  48 +                       part_info = set->partitions;
  49 +               }
  50         }
  51
  52 +       if (nr_part > 0 && part_info)
  53 +               return add_mtd_partitions(&mtd->mtd, part_info, nr_part);
  54 +
  55         return add_mtd_device(&mtd->mtd);
  56  }
  57  #else
  58 --
  59 1.5.6.3
  60