mtd: mxc_nand: fix read past buffer end

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Sascha hauer <s.hauer@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index ef932ba..6cd78ed 100644 (file)
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -641,9 +641,9 @@ static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
 
        n = min(n, len);
 
-       memcpy(buf, host->data_buf + col, len);
+       memcpy(buf, host->data_buf + col, n);
 
-       host->buf_start += len;
+       host->buf_start += n;
 }
 
 /* Used by the upper layer to verify the data in NAND Flash