From: Peter Wippich <pewi@gw-instruments.de>
Date: Mon, 6 Jun 2011 13:50:58 +0000 (+0200)
Subject: mtd: mtdchar: add missing initializer on raw write
X-Git-Tag: v2.6.34.13~44
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c6817c1778ce37b9bb5a65881675f4cae17312f8;p=thirdparty%2Fkernel%2Fstable.git

mtd: mtdchar: add missing initializer on raw write

commit bf5140817b2d65faac9b32fc9057a097044ac35b upstream.

On writes in MODE_RAW the mtd_oob_ops struct is not sufficiently
initialized which may cause nandwrite to fail. With this patch
it is possible to write raw nand/oob data without additional ECC
(either for testing or when some sectors need different oob layout
e.g. bootloader) like
nandwrite  -n -r -o  /dev/mtd0 <myfile>

Signed-off-by: Peter Wippich <pewi@gw-instruments.de>
Tested-by: Ricard Wanderlof <ricardw@axis.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 5b081cb843513..726a1b8d29d26 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -290,6 +290,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count
 			ops.mode = MTD_OOB_RAW;
 			ops.datbuf = kbuf;
 			ops.oobbuf = NULL;
+			ops.ooboffs = 0;
 			ops.len = len;
 
 			ret = mtd->write_oob(mtd, *ppos, &ops);