From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dC03q-0001s8-IP for linux-mtd@lists.infradead.org; Sat, 20 May 2017 08:48:32 +0000 Date: Sat, 20 May 2017 10:48:04 +0200 From: Boris Brezillon To: "Mario J. Rugiero" Cc: "linux-mtd@lists.infradead.org"@mail.free-electrons.com, computersforpeace@gmail.com, marek.vasut@gmail.com, richard@nod.at, cyrille.pitchen@wedev4u.fr Subject: Re: Message-ID: <20170520104804.55cec3e6@bbrezillon> In-Reply-To: <20170519213731.21484-1-mrugiero@gmail.com> References: <20170519213731.21484-1-mrugiero@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Mario, Not sure how you created this patchset, but you miss a Subject, and the diff-stat. Please use git format-patch -o -3 --cover-letter to generate patches, then fill the cover letter in. Once your cover letter is ready, you can send the patches with git send-email --to ... --cc ... /*.patch Regards, Boris Le Fri, 19 May 2017 18:37:28 -0300, "Mario J. Rugiero" a =C3=A9crit : > Some manufacturers use different layouts than MTD for the NAND, creating > incompatibilities when going from a vendor-specific kernel to mainline. > In particular, NAND devices for AllWinner boards write non-FF values to > the bad block marker, and thus false positives arise when detecting bad > blocks with the MTD driver. Sometimes there are enough false positives > to make the device unusable. > A proposed solution is NAND scrubbing, something a user who knows what > she's doing (TM) could do to avoid this. It consists in erasing blocks > disregarding the BBM. Since the user must know what she's doing, the > only way to enable this feature is through a per-chip debugfs entry. >=20