mtd: nand: vf610_nfc: use nand_check_erased_ecc_chunk() helper

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>

diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c
index d275691..8805d63 100644 (file)
--- a/drivers/mtd/nand/vf610_nfc.c
+++ b/drivers/mtd/nand/vf610_nfc.c
@@ -561,7 +561,6 @@ static inline int vf610_nfc_correct_data(struct mtd_info *mtd, uint8_t *dat,
        u32 ecc_status_off = NFC_MAIN_AREA(0) + ECC_SRAM_ADDR + ECC_STATUS;
        u8 ecc_status;
        u8 ecc_count;
-       int flips;
        int flips_threshold = nfc->chip.ecc.strength / 2;
 
        ecc_status = vf610_nfc_read(nfc, ecc_status_off) & 0xff;
@@ -578,16 +577,9 @@ static inline int vf610_nfc_correct_data(struct mtd_info *mtd, uint8_t *dat,
         * On an erased page, bit count (including OOB) should be zero or
         * at least less then half of the ECC strength.
         */
-       flips = count_written_bits(dat, nfc->chip.ecc.size, flips_threshold);
-       flips += count_written_bits(oob, mtd->oobsize, flips_threshold);
-
-       if (unlikely(flips > flips_threshold))
-               return -EINVAL;
-
-       /* Erased page. */
-       memset(dat, 0xff, nfc->chip.ecc.size);
-       memset(oob, 0xff, mtd->oobsize);
-       return flips;
+       return nand_check_erased_ecc_chunk(dat, nfc->chip.ecc.size, oob,
+                                          mtd->oobsize, NULL, 0,
+                                          flips_threshold);
 }
 
 static int vf610_nfc_read_page(struct mtd_info *mtd, struct nand_chip *chip,