From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from co9ehsobe005.messaging.microsoft.com ([207.46.163.28] helo=co9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VA9XN-000638-NP for linux-mtd@lists.infradead.org; Fri, 16 Aug 2013 02:13:15 +0000 From: Huang Shijie To: Subject: [PATCH v4 1/6] mtd: add a new field to mtd_info{} Date: Fri, 16 Aug 2013 10:10:04 +0800 Message-ID: <1376619009-8622-2-git-send-email-b32955@freescale.com> In-Reply-To: <1376619009-8622-1-git-send-email-b32955@freescale.com> References: <1376619009-8622-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: Huang Shijie , computersforpeace@gmail.com, linux-mtd@lists.infradead.org, pekon@ti.com, dedekind1@gmail.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , In order to implement the NAND boot for some Freescale's chips, such as imx23/imx28/imx50/imx6, we use a tool (called kobs-ng) to burn the uboot and some metadata to nand chip. And the ROM code will use the metadata to configrate the BCH, and to find the uboot. The ECC information(ecc step size, ecc strength) which is used to configrate the BCH is part of the metadata. The kobs-ng can gets the ecc strength from the sys node /sys/*/ecc_strength now. But it can not gets the ecc step size. This patch adds a new field to store the ecc step size in mtd_info{}, and it makes preparation for the next patches. Signed-off-by: Huang Shijie --- include/linux/mtd/mtd.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index a5cf4e8..f9bfe52 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -173,6 +173,9 @@ struct mtd_info { /* ECC layout structure pointer - read only! */ struct nand_ecclayout *ecclayout; + /* the ecc step size. */ + unsigned int ecc_step_size; + /* max number of correctible bit errors per ecc step */ unsigned int ecc_strength; -- 1.7.1