target/linux/brcm47xx/patches-4.0/400-mtd-bcm47xxpart-get-nvram.patch

   1 --- a/drivers/mtd/bcm47xxpart.c
   2 +++ b/drivers/mtd/bcm47xxpart.c
   3 @@ -97,6 +97,7 @@ static int bcm47xxpart_parse(struct mtd_
   4         int trx_part = -1;
   5         int last_trx_part = -1;
   6         int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
   7 +       bool found_nvram = false;
   8
   9         /*
  10          * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
  11 @@ -300,12 +301,23 @@ static int bcm47xxpart_parse(struct mtd_
  12                 if (buf[0] == NVRAM_HEADER) {
  13                         bcm47xxpart_add_part(&parts[curr_part++], "nvram",
  14                                              master->size - blocksize, 0);
  15 +                       found_nvram = true;
  16                         break;
  17                 }
  18         }
  19
  20         kfree(buf);
  21
  22 +       if (!found_nvram) {
  23 +               pr_err("can not find a nvram partition reserve last block\n");
  24 +               bcm47xxpart_add_part(&parts[curr_part++], "nvram_guess",
  25 +                                    master->size - blocksize * 2, MTD_WRITEABLE);
  26 +               for (i = 0; i < curr_part; i++) {
  27 +                       if (parts[i].size + parts[i].offset == master->size)
  28 +                               parts[i].offset -= blocksize * 2;
  29 +               }
  30 +       }
  31 +
  32         /*
  33          * Assume that partitions end at the beginning of the one they are
  34          * followed by.