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Reporting an unclean read from SPI-NAND only when the maximum number of correctable bitflip errors has been hit seems a bit late. UBI LEB scrubbing, which depends on the lower MTD device reporting correctable bitflips, then only kicks in when it's almost too late. Set bitflip_threshold to 75% of the ECC strength, which is also the default for raw NAND. This is a port of linux commit 1824520e7477 (mtd: spinand: set bitflip_threshold to 75% of ECC strength) Signed-off-by: Daniel Golle <daniel@makrotopia.org> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/2117e387260b0a96f95b8e1652ff79e0e2d71d53.1723427450.git.daniel@makrotopia.org Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu> # U-Boot port Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>