From: Haojian Zhuang <haojian.zhuang@marvell.com>
Date: Mon, 14 Sep 2009 12:21:01 +0000 (+0800)
Subject: pxa3xx_nand: reset read buffer before reading
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7ce33aff68f653769ba16108834ed212788bcbb6;p=openwrt%2Fstaging%2Fblogic.git

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>
---

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index f463ad272d3b..9140fdc42bca 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;