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Message-ID: <20190130130111.32724-6-frieder.schrempf@kontron.de>
Date: Wed, 30 Jan 2019 13:01:52 +0000
From: Schrempf Frieder <frieder.schrempf@...tron.de>
To: "bbrezillon@...nel.org" <bbrezillon@...nel.org>,
"miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>,
"richard@....at" <richard@....at>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC: "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
"Schrempf Frieder" <frieder.schrempf@...tron.de>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
Marek Vasut <marek.vasut@...il.com>
Subject: [PATCH v3 5/5] mtd: rawnand: AMD: Also use the last page for bad
block markers
From: Frieder Schrempf <frieder.schrempf@...tron.de>
According to the datasheet of some Cypress SLC NANDs, the bad
block markers can be in the first, second or last page of a block.
So let's check all three locations.
Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
Reviewed-by: Boris Brezillon <bbrezillon@...nel.org>
---
drivers/mtd/nand/raw/nand_amd.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c
index 6202cbf7ee8d..2ffcddff3e27 100644
--- a/drivers/mtd/nand/raw/nand_amd.c
+++ b/drivers/mtd/nand/raw/nand_amd.c
@@ -40,7 +40,13 @@ static void amd_nand_decode_id(struct nand_chip *chip)
static int amd_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
- chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
+ /*
+ * According to the datasheet of some Cypress SLC NANDs,
+ * the bad block markers can be in the first, second or last
+ * page of a block. So let's check all three locations.
+ */
+ chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE |
+ NAND_BBM_LASTPAGE;
return 0;
}
--
2.17.1
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