Boris, Am Mittwoch, 7. März 2018, 09:12:36 CET schrieb Boris Brezillon: > On Tue, 06 Mar 2018 21:22:30 +0000 > > Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx> wrote: > > On Fri, 2018-03-02 at 09:50 +0100, Greg Kroah-Hartman wrote: > > > 4.4-stable review patch. If anyone has any objections, please let me > > > know. > > > > > > ------------------ > > > > > > From: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> > > > > > > > > > [ Upstream commit fdf2e821052958a114618a95ab18a300d0b080cb ] > > > > > > When erased subpages are read then the BCH decoder returns STATUS_ERASED > > > if they are all empty, or STATUS_UNCORRECTABLE if there are bitflips. > > > When there are bitflips, we have to set these bits again to show the > > > upper layers a completely erased page. When a bitflip happens in the > > > exact byte where the bad block marker is, then this byte is swapped > > > with another byte in block_mark_swapping(). The correction code then > > > detects a bitflip in another subpage and no longer corrects the bitflip > > > where it really happens. > > > > [...] > > > > This seesm to be a bug fix for commit bd2e778c9ee3 "gpmi-nand: Handle > > ECC Errors in erased pages". That's not in 4.4 so the bug fix is not > > needed, though it doesn't appear to do any harm. > > I wonder why the fix was backported to stable releases in the first > place. AFAICS, there's no Cc-stable or Fixes tag in the original > commit. It's probably something in the backport-to-stable process I'm > not aware of. It was auto selected by a stable script. Thanks, //richard