From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from metis.ext.pengutronix.de ([92.198.50.35]) by bombadil.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1T3lXt-0005qJ-2J for linux-mtd@lists.infradead.org; Tue, 21 Aug 2012 10:18:50 +0000 Message-ID: <50335FFB.3080703@pengutronix.de> Date: Tue, 21 Aug 2012 12:16:27 +0200 From: Marc Kleine-Budde MIME-Version: 1.0 To: dedekind1@gmail.com Subject: Re: another issue with ubifs on v3.6-rc2: attaching an formatted device References: <20120820160750.GS2232@pengutronix.de> <1345489867.1789.3.camel@kyv> <20120821093518.GD12220@pengutronix.de> <1345544113.2848.87.camel@sauron.fi.intel.com> In-Reply-To: <1345544113.2848.87.camel@sauron.fi.intel.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig968BDB3C40E2A5B8E6F22A88" Cc: linux-mtd@lists.infradead.org, Huang Shijie , kernel@pengutronix.de, =?UTF-8?B?VXdlIEtsZWluZS1Lw7ZuaWc=?= List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig968BDB3C40E2A5B8E6F22A88 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 08/21/2012 12:15 PM, Artem Bityutskiy wrote: > On Tue, 2012-08-21 at 11:35 +0200, Uwe Kleine-K=C3=B6nig wrote: >> On Mon, Aug 20, 2012 at 10:11:07PM +0300, Artem Bityutskiy wrote: >>> On Mon, 2012-08-20 at 18:07 +0200, Uwe Kleine-K=C3=B6nig wrote: >>>> [ 163.714143] uncorrectable error :=20 >>>> [ 163.727597] UBI warning: ubi_io_read: error -74 (ECC error) while= >>>> reading 64 bytes from PEB 0:0, read only 64 bytes, retry >>>> [ 163.740737] uncorrectable error :=20 >>>> [ 163.744032] UBI warning: ubi_io_read: error -74 (ECC error) while= >>>> reading 64 bytes from PEB 0:0, read only 64 bytes, retry >>>> [ 163.757119] uncorrectable error :=20 >>>> [ 163.760487] UBI warning: ubi_io_read: error -74 (ECC error) while= >>>> reading 64 bytes from PEB 0:0, read only 64 bytes, retry >>>> [ 163.774427] uncorrectable error :=20 >>>> [ 163.777808] UBI error: ubi_io_read: error -74 (ECC error) while >>>> reading 64 bytes from PEB 0:0, read 64 bytes=20 >>> >>> This looks like your flash does not really support sub-pages while >>> declares that it does. Check it with MTD subpage test. >> the subpages test fails with: >> >> [ 82.435792] mtd_subpagetest: written up to eraseblock 7424 >> [ 82.905775] mtd_subpagetest: written up to eraseblock 7680 >> [ 83.375201] mtd_subpagetest: written up to eraseblock 7936 >> [ 83.840447] mtd_subpagetest: written 8192 eraseblocks >> [ 83.845522] mtd_subpagetest: verifying all eraseblocks >> [ 83.852740] uncorrectable error :=20 >> [ 83.856086] mtd_subpagetest: error: read failed at 0x0 >> [ 83.861469] mtd_subpagetest: error -74 occurred >> [ 83.866093] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D >> Error: could not insert module ./drivers/mtd/tests/mtd_subpagetest.ko:= Bad message >> >> I don't have a clue yet how to debug that further. Will start with >> checking older kernel releases. Any hints welcome. >=20 > AFAIR, the driver did not support subpages and just needed to report > about this. And there is a bug in MTD which makes it impossible for > drivers to tell that sub-pages are not supported. So AFAIU, we need the= > patch I pointed you, and we also need the driver to use "no subpage > writes" option. >=20 > I think the maintainer is the best person to comment on this. I assume > this is the gpmi driver, so that would be Huang Shijie > . It's an mx35, so mxc_nand.c and it's Sascha Hauer, who's on vacation this week. Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | --------------enig968BDB3C40E2A5B8E6F22A88 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlAzX/sACgkQjTAFq1RaXHNZjACgmVcm17bNaQEAtlFqlPtzp9bu vO8AoIfAMtVqfDE4I8Bzk1ymC5qqCAAH =hzaY -----END PGP SIGNATURE----- --------------enig968BDB3C40E2A5B8E6F22A88--