The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From f7d11b33d4e8cedf19367c09b891bbc705163976 Mon Sep 17 00:00:00 2001
From: Richard Weinberger <richard@xxxxxx>
Date: Wed, 24 Aug 2016 14:36:15 +0200
Subject: [PATCH] ubi: Fix Fastmap's update_vol()
Usually Fastmap is free to consider every PEB in one of the pools
as newer than the existing PEB. Since PEBs in a pool are by definition
newer than everything else.
But update_vol() missed the case that a pool can contain more than
one candidate.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: dbb7d2a88d ("UBI: Add fastmap core")
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 8bd468332ec0..d6384d965788 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -304,6 +304,7 @@ static int update_vol(struct ubi_device *ubi, struct ubi_attach_info *ai,
aeb->pnum = new_aeb->pnum;
aeb->copy_flag = new_vh->copy_flag;
aeb->scrub = new_aeb->scrub;
+ aeb->sqnum = new_aeb->sqnum;
ubi_free_aeb(ai, new_aeb);
/* new_aeb is older */
--
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