From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from diadema.ru ([80.66.89.150] helo=mail.diadema.ru) by canuck.infradead.org with esmtps (Exim 4.62 #1 (Red Hat Linux)) id 1FfWJz-0004MD-BY for linux-mtd@lists.infradead.org; Mon, 15 May 2006 02:12:51 -0400 Received: from localhost (bridge [127.0.0.1]) by mail.diadema.ru (Postfix) with ESMTP id 128D967E91 for ; Mon, 15 May 2006 12:40:27 +0700 (NOVST) Received: from mail.diadema.ru ([127.0.0.1]) by localhost (bridge [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 18172-06-2 for ; Mon, 15 May 2006 12:40:22 +0700 (NOVST) Received: from [192.168.2.239] (sigrand.ru [80.66.88.167]) by mail.diadema.ru (Postfix) with ESMTP id 3C0D268279 for ; Mon, 15 May 2006 12:39:51 +0700 (NOVST) From: Polyakov Artem To: linux-mtd@lists.infradead.org Content-Type: text/plain; charset=Windows-1251 Date: Mon, 15 May 2006 03:54:23 +0000 Message-Id: <1147665263.6999.7.camel@localhost> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Reading data from NAND FLASH without ECC is not recommended Reply-To: art@sigrand.ru List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi all! Sorry for my poor english. I want to ask - why by default reading from NAND flash provided without ECC? I work with Samsung K9F5608U0Ñ 32M flash. And one interest thing for me is that debug messages show that oob bytes for ECC are used by system. I mean, after eraseing - all bytes are 0xFF. But my debug messages shows this: > write oob(00001890): 65 55 97 5a ffff 69 57 ff ff ff ff ff ff ff ff bytes for ECC are not equal 0xFF! but system dont use this bytes for ECC correction: > Reading data from NAND FLASH without ECC is not recommended