From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Brian Norris" To: linux-mtd@lists.infradead.org Subject: [PATCH 5/8] mtd: nand: move NAND_CREATE_EMPTY_BBT flag Date: Tue, 31 May 2011 16:31:24 -0700 Message-ID: <1306884687-1824-6-git-send-email-computersforpeace@gmail.com> In-Reply-To: <1306884687-1824-1-git-send-email-computersforpeace@gmail.com> References: <1306884687-1824-1-git-send-email-computersforpeace@gmail.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: baruch@tkos.co.il, Kevin Cernekee , Sebastian Andrzej Siewior , nsekhar@ti.com, b25806@freescale.com, tie-fei.zang@freescale.com, linux-mtd@lists.infradead.org, Florian Fainelli , jamie@jamieiles.com, Ivan Djelic , kernel@wantstofly.org, khilman@ti.com, jesper.nilsson@axis.com, kgene.kim@samsung.com, linux@arm.linux.org.uk, hjk@linutronix.de, r64343@freescale.com, u.kleine-koenig@pengutronix.de, Ricard Wanderlof , alex@digriz.org.uk, john.ogness@linutronix.de, lucas.demarchi@profusion.mobi, nicolas.ferre@atmel.com, s.hauer@pengutronix.de, starvik@axis.com, joe@perches.com, ben-linux@fluff.org, cbouatmailru@gmail.com, linux-arm-kernel@lists.infradead.org, grant.likely@secretlab.ca, hong.xu@atmel.com, linux-cris-kernel@axis.com, sbranden@broadcom.com, nico@fluxnic.net, jkosina@suse.cz, Artem Bityutskiy , blp@cs.stanford.edu, w.sang@pengutronix.de, mware@elphinstone.net, jdzheng@broadcom.com, chuanxiao.dong@intel.com, olof@lixom.net, Brian Norris , David Woodhouse List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The NAND_CREATE_EMPTY_BBT flag was added by commit: 453281a973c10bce941b240d1c654d536623b16b mtd: nand: introduce NAND_CREATE_EMPTY_BBT This flag is not used within the kernel and not explained well, so I took the liberty to edit its comments. Also, this is a BBT-related flag (and closely tied with NAND_BBT_CREATE) so I'm moving it to bbm.h next to NAND_BBT_CREATE, thus requiring that we use the flag in nand_chip.bbt_options, *not* in nand_chip.options. Signed-off-by: Brian Norris --- drivers/mtd/nand/nand_bbt.c | 2 +- include/linux/mtd/bbm.h | 7 +++++++ include/linux/mtd/nand.h | 2 -- 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index dfea9fd..2e4e259 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -970,7 +970,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc continue; /* Create the table in memory by scanning the chip(s) */ - if (!(this->options & NAND_CREATE_EMPTY_BBT)) + if (!(this->bbt_options & NAND_CREATE_EMPTY_BBT)) create_bbt(mtd, buf, bd, chipsel); td->version[i] = 1; diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index ff18c08..3cf4a8a 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -86,6 +86,13 @@ struct nand_bbt_descr { #define NAND_BBT_VERSION 0x00000100 /* Create a bbt if none exists */ #define NAND_BBT_CREATE 0x00000200 +/* + * Create an empty BBT with no vendor information. Vendor's information may be + * unavailable, for example, if the NAND controller has a different data and OOB + * layout or if this information is already purged. Must be used in conjunction + * with NAND_BBT_CREATE. + */ +#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index f68e8cb..4e9e88b 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -228,8 +228,6 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00040000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00080000 -/* Create an empty BBT with no vendor information if the BBT is available */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- 1.7.0.4