From mboxrd@z Thu Jan 1 00:00:00 1970 From: RogerCC Lin Subject: [PATCH v4 0/2] mtd: nand: fix writing incorrect ECC parity data in OOB region Date: Tue, 30 Aug 2016 20:35:46 +0800 Message-ID: <1472560548-30567-1-git-send-email-rogercc.lin@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+glpam-linux-mediatek=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org Cc: robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, daniel.thompson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, steven.liu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, jorge.ramirez-ortiz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, xiaolei.li-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, RogerCC Lin , blogic-p3rKhJxN3npAfugRpC6u6w@public.gmane.org List-Id: linux-mediatek@lists.infradead.org From: RogerCC Lin This series fix chances to write incorrect ECC data which may cause uncorrectable ECC error when reading. changes since v3: - use macro for function arguments. changes since v2: - use macro for shift operation. changes since v1: - separate patches into 2. - use shift operator with byte access to avoid endianness conversion problems. - follow linux coding style. The patch passed the test of UBIFS file-system read/write on Mediatek's RFB. The tested driver is checked-out from LEDE OpenWRT project's upstream driver, which is pretty much same as nand/next branch upstream driver(git clone https://git.lede-project.org/source.git). RogerCC Lin (2): mtd: nand: fix generating over-boundary ECC data when writing mtd: nand: fix chances to create incomplete ECC data when writing drivers/mtd/nand/mtk_ecc.c | 12 ++++++++---- drivers/mtd/nand/mtk_nand.c | 7 +++++-- 2 files changed, 13 insertions(+), 6 deletions(-)