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authorMiquel Raynal <miquel.raynal@bootlin.com>2020-12-03 22:03:34 +0300
committerMiquel Raynal <miquel.raynal@bootlin.com>2020-12-11 22:09:57 +0300
commitbd47fa451315684424d2b39aa95f2ed235fee37a (patch)
treedd01fb4aefb365ff7f1e4aeda3a02fadc03cbeed /drivers/mtd
parent52277269c4060ced7e7d1a83c77377590d106f44 (diff)
downloadlinux-bd47fa451315684424d2b39aa95f2ed235fee37a.tar.xz
mtd: rawnand: gpio: Do not force a particular software ECC engine
Originally, commit d7157ff49a5b ("mtd: rawnand: Use the ECC framework user input parsing bits") kind of broke the logic around the initialization of several ECC engines. Unfortunately, the fix (which indeed moved the ECC initialization to the right place) did not take into account the fact that a different ECC algorithm could have been used thanks to a DT property, considering the "Hamming" algorithm entry a configuration while it was only a default. Add the necessary logic to be sure Hamming keeps being only a default. Fixes: f6341f6448e0 ("mtd: rawnand: gpio: Move the ECC initialization to ->attach_chip()") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-4-miquel.raynal@bootlin.com
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/raw/gpio.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c
index eb03b8cea1cb..fb7a086de35e 100644
--- a/drivers/mtd/nand/raw/gpio.c
+++ b/drivers/mtd/nand/raw/gpio.c
@@ -164,7 +164,9 @@ static int gpio_nand_exec_op(struct nand_chip *chip,
static int gpio_nand_attach_chip(struct nand_chip *chip)
{
chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;
- chip->ecc.algo = NAND_ECC_ALGO_HAMMING;
+
+ if (chip->ecc.algo == NAND_ECC_ALGO_UNKNOWN)
+ chip->ecc.algo = NAND_ECC_ALGO_HAMMING;
return 0;
}