From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757264AbcHWHdB (ORCPT ); Tue, 23 Aug 2016 03:33:01 -0400 Received: from down.free-electrons.com ([37.187.137.238]:47531 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755125AbcHWHc6 (ORCPT ); Tue, 23 Aug 2016 03:32:58 -0400 From: Boris Brezillon To: Artem Bityutskiy , Richard Weinberger Cc: David Woodhouse , Brian Norris , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Boris Brezillon Subject: [PATCH 3/7] UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header Date: Tue, 23 Aug 2016 09:32:50 +0200 Message-Id: <1471937574-8045-4-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1471937574-8045-1-git-send-email-boris.brezillon@free-electrons.com> References: <1471937574-8045-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org scan_pool() does not mark the PEB for scrubing when bitflips are detected in the EC header of a free PEB (VID header region left to 0xff). Make sure we scrub the PEB in this case. Signed-off-by: Boris Brezillon Fixes: dbb7d2a88d2a ("UBI: Add fastmap core") --- drivers/mtd/ubi/fastmap.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index ebb65ac6980f..a6ed78d14055 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -498,10 +498,11 @@ static int scan_pool(struct ubi_device *ubi, struct ubi_attach_info *ai, unsigned long long ec = be64_to_cpu(ech->ec); unmap_peb(ai, pnum); dbg_bld("Adding PEB to free: %i", pnum); + if (err == UBI_IO_FF_BITFLIPS) - add_aeb(ai, free, pnum, ec, 1); - else - add_aeb(ai, free, pnum, ec, 0); + scrub = 1; + + add_aeb(ai, free, pnum, ec, scrub); continue; } else if (err == 0 || err == UBI_IO_BITFLIPS) { dbg_bld("Found non empty PEB:%i in pool", pnum); -- 2.7.4