target/linux/ramips/patches-4.14/0038-Revert-mtd-nand-Remove-unused-chip-write_page-hook.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   2 Subject: [PATCH] Revert "mtd: nand: Remove unused chip->write_page() hook"
   3 MIME-Version: 1.0
   4 Content-Type: text/plain; charset=UTF-8
   5 Content-Transfer-Encoding: 8bit
   6
   7 This reverts commit f107d7a43923a83d837b3ea3c7b7de58cd014bbd.
   8
   9 OpenWrt's downstream driver mtk_nand2 still uses that callback.
  10
  11 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  12 ---
  13
  14 --- a/drivers/mtd/nand/nand_base.c
  15 +++ b/drivers/mtd/nand/nand_base.c
  16 @@ -2577,7 +2577,7 @@ static int nand_write_page_syndrome(stru
  17  }
  18
  19  /**
  20 - * nand_write_page - write one page
  21 + * nand_write_page - [REPLACEABLE] write one page
  22   * @mtd: MTD device structure
  23   * @chip: NAND chip descriptor
  24   * @offset: address offset within the page
  25 @@ -2761,9 +2761,9 @@ static int nand_do_write_ops(struct mtd_
  26                         memset(chip->oob_poi, 0xff, mtd->oobsize);
  27                 }
  28
  29 -               ret = nand_write_page(mtd, chip, column, bytes, wbuf,
  30 -                                     oob_required, page,
  31 -                                     (ops->mode == MTD_OPS_RAW));
  32 +               ret = chip->write_page(mtd, chip, column, bytes, wbuf,
  33 +                                       oob_required, page,
  34 +                                       (ops->mode == MTD_OPS_RAW));
  35                 if (ret)
  36                         break;
  37
  38 @@ -4719,6 +4719,9 @@ int nand_scan_tail(struct mtd_info *mtd)
  39                 }
  40         }
  41
  42 +       if (!chip->write_page)
  43 +               chip->write_page = nand_write_page;
  44 +
  45         /*
  46          * Check ECC mode, default to software if 3byte/512byte hardware ECC is
  47          * selected and we have 256 byte pagesize fallback to software ECC
  48 --- a/include/linux/mtd/rawnand.h
  49 +++ b/include/linux/mtd/rawnand.h
  50 @@ -862,6 +862,7 @@ struct nand_manufacturer_ops {
  51   *                     structure which is shared among multiple independent
  52   *                     devices.
  53   * @priv:              [OPTIONAL] pointer to private chip data
  54 + * @write_page:                [REPLACEABLE] High-level page write function
  55   * @manufacturer:      [INTERN] Contains manufacturer information
  56   */
  57
  58 @@ -885,6 +886,9 @@ struct nand_chip {
  59         int(*waitfunc)(struct mtd_info *mtd, struct nand_chip *this);
  60         int (*erase)(struct mtd_info *mtd, int page);
  61         int (*scan_bbt)(struct mtd_info *mtd);
  62 +       int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
  63 +                       uint32_t offset, int data_len, const uint8_t *buf,
  64 +                       int oob_required, int page, int raw);
  65         int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
  66                         int feature_addr, uint8_t *subfeature_para);
  67         int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,