mtd: rawnand: lpc32xx_slc: Fix external use of SW Hamming ECC helper

Since the Hamming software ECC engine has been updated to become a
proper and independent ECC engine, it is now mandatory to either
initialize the engine before using any one of his functions or use one
of the bare helpers which only perform the calculations. As there is no
actual need for a proper ECC initialization, let's just use the bare
helper instead of the rawnand one.

Fixes: 90ccf0a0192f ("mtd: nand: ecc-hamming: Rename the exported functions")
Cc: stable@vger.kernel.org
Cc: Vladimir Zapolskiy <vz@mleia.com>
Reported-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Trevor Woerner <twoerner@gmail.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/linux-mtd/20210413161840.345208-4-miquel.raynal@bootlin.com

diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c
index 6b7269c..d7dfc6f 100644 (file)
--- a/drivers/mtd/nand/raw/lpc32xx_slc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_slc.c
@@ -27,6 +27,7 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/mtd/lpc32xx_slc.h>
+#include <linux/mtd/nand-ecc-sw-hamming.h>
 
 #define LPC32XX_MODNAME                "lpc32xx-nand"
 
@@ -345,6 +346,18 @@ static int lpc32xx_nand_ecc_calculate(struct nand_chip *chip,
 }
 
 /*
+ * Corrects the data
+ */
+static int lpc32xx_nand_ecc_correct(struct nand_chip *chip,
+                                   unsigned char *buf,
+                                   unsigned char *read_ecc,
+                                   unsigned char *calc_ecc)
+{
+       return ecc_sw_hamming_correct(buf, read_ecc, calc_ecc,
+                                     chip->ecc.size, false);
+}
+
+/*
  * Read a single byte from NAND device
  */
 static uint8_t lpc32xx_nand_read_byte(struct nand_chip *chip)
@@ -802,7 +815,7 @@ static int lpc32xx_nand_attach_chip(struct nand_chip *chip)
        chip->ecc.write_oob = lpc32xx_nand_write_oob_syndrome;
        chip->ecc.read_oob = lpc32xx_nand_read_oob_syndrome;
        chip->ecc.calculate = lpc32xx_nand_ecc_calculate;
-       chip->ecc.correct = rawnand_sw_hamming_correct;
+       chip->ecc.correct = lpc32xx_nand_ecc_correct;
        chip->ecc.hwctl = lpc32xx_nand_ecc_enable;
 
        /*