From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fra-del-03.spheriq.net ([195.46.51.99]) by pentafluge.infradead.org with esmtps (Exim 4.62 #1 (Red Hat Linux)) id 1GKaDq-0003gn-TL for linux-mtd@lists.infradead.org; Tue, 05 Sep 2006 13:40:12 +0100 Received: from fra-out-01.spheriq.net (fra-out-01.spheriq.net [195.46.51.129]) by fra-del-03.spheriq.net with ESMTP id k85CcCOD004505 for ; Tue, 5 Sep 2006 12:38:12 GMT Received: from fra-cus-01.spheriq.net (fra-cus-01.spheriq.net [195.46.51.37]) by fra-out-01.spheriq.net with ESMTP id k85CbfF0003153 for ; Tue, 5 Sep 2006 12:37:41 GMT Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by fra-cus-01.spheriq.net with ESMTP id k85Cbefn011324 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK) for ; Tue, 5 Sep 2006 12:37:41 GMT Received: from zeta.dmz-eu.st.com (ns2.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 17C5CDA45 for ; Tue, 5 Sep 2006 12:37:40 +0000 (GMT) Received: from mail1.nap.st.com (mail1.nap.st.com [10.150.200.1]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id BD59547450 for ; Tue, 5 Sep 2006 12:37:39 +0000 (GMT) From: Davide CASCONE To: Subject: JFFS2 ECC options Date: Tue, 5 Sep 2006 14:37:41 +0200 Message-ID: <000f01c6d0e8$145e1ce0$d204960a@nap.st.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: , I'm working with JFFS2 on a NAND device. In order to disable the = software ECC is it enough to set the mtd field "nand.eccmode" to = "NAND_ECC_NONE"?=20 If I do this, I have some CRC errors if JFFS2 file system includes a bad = block. Is it right? Does the CRC check depend on the ECC options? In order to use the summary support, is it enough to set the macro = "CONFIG_JFFS2_SUMMARY" in the file ".config"? Do I have to re-make the = file system image (that I create using the mkfs.jffs2 utility) in order = to use it with the summary support? Thanks in advance, Davide