linux-kernel - [PATCH 3.13.y-ckt 19/95] UBI: account for bitflips in both the VID header and data

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Message-Id: <1432753243-16151-20-git-send-email-kamal@canonical.com>
Date:	Wed, 27 May 2015 11:59:27 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Brian Norris <computersforpeace@...il.com>,
	Richard Weinberger <richard@....at>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 19/95] UBI: account for bitflips in both the VID header and data

3.13.11-ckt21 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Brian Norris <computersforpeace@...il.com>

commit 8eef7d70f7c6772c3490f410ee2bceab3b543fa1 upstream.

We are completely discarding the earlier value of 'bitflips', which
could reflect a bitflip found in ubi_io_read_vid_hdr(). Let's use the
bitwise OR of header and data 'bitflip' statuses instead.

Coverity CID #1226856

Signed-off-by: Brian Norris <computersforpeace@...il.com>
Signed-off-by: Richard Weinberger <richard@....at>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/mtd/ubi/attach.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index 33bb1f2..208d86b 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -408,7 +408,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb,
 		second_is_newer = !second_is_newer;
 	} else {
 		dbg_bld("PEB %d CRC is OK", pnum);
-		bitflips = !!err;
+		bitflips |= !!err;
 	}
 	mutex_unlock(&ubi->buf_mutex);
 
-- 
1.9.1

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