UBI: fastmap: fix backward compatibility with image_seq
authorRichard Genoud <richard.genoud@gmail.com>
Sat, 28 Sep 2013 13:55:13 +0000 (15:55 +0200)
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Thu, 3 Oct 2013 16:42:50 +0000 (19:42 +0300)
commitc22301ad4fa0f4cf71e9c877d072e6f07a0bf682
tree193c29c2ae335240e9fddb24c4b1177ee3a59eb3
parent4b3e0a25aa5518892ec8dbfafdd6a57789aa0c22
UBI: fastmap: fix backward compatibility with image_seq

Some old UBI implementations (e.g. U-Boot) have not implemented the image
sequence feature.
So, when erase blocks are written, the image sequence in the ec header
is lost (set to zero).
UBI scan_all() takes this case into account (commits
32bc4820287a1a03982979515949e8ea56eac641 and
2eadaad67b2b6bd132eda105128d2d466298b8e3)

But fastmap scan functions (ubi_scan_fastmap() and scan_pool()) didn't.

This patch fixes the issue.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
drivers/mtd/ubi/fastmap.c