pxa3xx_nand: reset read buffer before reading

Initialize the read buffer content to 0xFF.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index f463ad272d3..9140fdc42bc 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -670,6 +670,7 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
                 /* disable HW ECC to get all the OOB data */
                 info->buf_count = mtd->writesize + mtd->oobsize;
                 info->buf_start = mtd->writesize + column;
+                memset(info->data_buff, 0xFF, info->buf_count);
 
                 if (prepare_read_prog_cmd(info, cmdset->read1, column, page_addr))
                         break;