From: "Eric Bénard" <eric@eukrea.com>
To: barebox@lists.infradead.org
Subject: [PATCH] mtdraw: fix oob read and write
Date: Thu, 11 Apr 2013 14:04:51 +0200 [thread overview]
Message-ID: <1365681891-9135-1-git-send-email-eric@eukrea.com> (raw)
actually ops.ooboffs is not defaulted so when its value gets
added to chip->oob_poi in nand_fill_oob or nand_transfer_oob
the respective memcpy is using a wrong address.
With this patch, both md -s /dev/nandraw0 and cp xyz /dev/nandraw0.sb
are working fine on an i.MX28 target (instead of crashing the board).
Signed-off-by: Eric Bénard <eric@eukrea.com>
---
drivers/mtd/mtdraw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/mtdraw.c b/drivers/mtd/mtdraw.c
index 384104e..c289e8d 100644
--- a/drivers/mtd/mtdraw.c
+++ b/drivers/mtd/mtdraw.c
@@ -98,6 +98,7 @@ static ssize_t mtdraw_read_unaligned(struct mtd_info *mtd, void *dst,
if (!tmp)
return -ENOMEM;
ops.mode = MTD_OOB_RAW;
+ ops.ooboffs = 0;
ops.datbuf = tmp;
ops.len = mtd->writesize;
ops.oobbuf = tmp + mtd->writesize;
@@ -152,6 +153,7 @@ static ssize_t mtdraw_blkwrite(struct mtd_info *mtd, const void *buf,
int ret;
ops.mode = MTD_OOB_RAW;
+ ops.ooboffs = 0;
ops.datbuf = (void *)buf;
ops.len = mtd->writesize;
ops.oobbuf = (void *)buf + mtd->writesize;
--
1.7.11.7
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next reply other threads:[~2013-04-11 12:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-11 12:04 Eric Bénard [this message]
2013-04-12 17:29 ` Sascha Hauer
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