From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.hotbox.ru ([80.68.244.50]) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 18eQAv-0002qS-00 for ; Fri, 31 Jan 2003 01:41:01 +0000 Received: from pengwin (h209-139-192-234.gtconnect.net [209.139.192.234]) (authenticated bits=0) by smtp.hotbox.ru (8.12.6/8.12.6) with ESMTP id h0V27P31012300 for ; Fri, 31 Jan 2003 05:07:26 +0300 (MSK) (envelope-from samoutin@hotbox.ru) Message-ID: <004701c2c8ce$107caea0$1a00a8c0@itc.intrinsyc.com> From: "Alex Samoutin" To: References: <007801c2c7fc$5834da60$1a00a8c0@itc.intrinsyc.com> <20030130210325.0F2BB405E@tiger.actrix.co.nz> Subject: Re: NAND subsector writing problem Date: Thu, 30 Jan 2003 18:11:23 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: don't know much about sub-page writing. I've only took latest MTD snapshot and wrote hardware level driver for NAND chip on IBM 405ep board. And then started "nandtest" program from the same snapshot. So, if "mixing ECC and sub-page writes is invalid" then something wrong in "nand.c" or "nandtest.o" And furthermore - that was not ECC error, it was error during verify read after write (read and write buffer not match). Also I have troubles with JFFS2 :(. nand_write_page failed after verify ( If CONFIG_MTD_NAND_VERIFY_WRITE not defined - I have no error message) Alex. ----- Original Message ----- From: "Charles Manning" To: "Alex Samoutin" ; Sent: Thursday, January 30, 2003 12:57 PM Subject: Re: NAND subsector writing problem > There is no problem using this for JFFS2 or YAFFS since neither use > sub-page writes. > > ECC applies to the whole page. Thus, mixing ECC and sub-page writes is > invalid. > > -- Charles >