1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 01946b7c3a8d..9d01c4df838c 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1174,13 +1174,14 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
         int data_col_addr, i, gaps = 0;
         int datafrag_len, eccfrag_len, aligned_len, aligned_pos;
         int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1;
-        int index = 0;
+        int index;
         unsigned int max_bitflips = 0;
 
         /* Column address within the page aligned to ECC size (256bytes) */
         start_step = data_offs / chip->ecc.size;
         end_step = (data_offs + readlen - 1) / chip->ecc.size;
         num_steps = end_step - start_step + 1;
+        index = start_step * chip->ecc.bytes;
 
         /* Data size aligned to ECC ecc.size */
         datafrag_len = num_steps * chip->ecc.size;
@@ -1217,8 +1218,6 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
                  * Send the command to read the particular ECC bytes take care
                  * about buswidth alignment in read_buf.
                  */
-                index = start_step * chip->ecc.bytes;
-
                 aligned_pos = eccpos[index] & ~(busw - 1);
                 aligned_len = eccfrag_len;
                 if (eccpos[index] & (busw - 1))