tree 4ccfc207a0b55cfad4247f49bd1bce03d5034560
parent cbd8a9d2cd6f576ca41022599341bbd8be1b0b27
author Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 1208627071 +0300
committer Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 1208627381 +0300

UBI: fix mean EC calculation

(a + b) / (c + d) != a / c + b / d. The old code errornously
assumed this incorrect formuld. Instead, just sum all erase
counters in a 64-bit variable and divide to the number of EBs
at the end.

Thanks to Adrian Hunter for pointing this out.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>