diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index d05873b8c155..03ed2545f094 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -232,11 +232,13 @@ config MTD_NAND_BASLER_EXCITE
           will be named "excite_nandflash.ko".
 
 config MTD_NAND_CAFE
-       tristate "NAND support for OLPC CAFÉ chip"
-       depends on PCI
-       help
-	 Use NAND flash attached to the CAFÉ chip designed for the $100
-	 laptop.
+	tristate "NAND support for OLPC CAFÉ chip"
+	depends on PCI
+	select REED_SOLOMON
+	select REED_SOLOMON_DEC16
+	help
+	  Use NAND flash attached to the CAFÉ chip designed for the $100
+	  laptop.
 
 config MTD_NAND_CS553X
 	tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 6872031a3fb2..79e9e5da1c08 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -28,4 +28,4 @@ obj-$(CONFIG_MTD_NAND_CM_X270)		+= cmx270_nand.o
 obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= excite_nandflash.o
 
 nand-objs := nand_base.o nand_bbt.o
-cafe_nand-objs := cafe.o cafe_ecc.o
+cafe_nand-objs := cafe.o
diff --git a/drivers/mtd/nand/cafe.c b/drivers/mtd/nand/cafe.c
index c328a7514510..05f6ec9f5aa7 100644
--- a/drivers/mtd/nand/cafe.c
+++ b/drivers/mtd/nand/cafe.c
@@ -11,6 +11,7 @@
 #undef DEBUG
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
+#include <linux/rslib.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
@@ -46,13 +47,11 @@
 #define CAFE_GLOBAL_IRQ_MASK	0x300c
 #define CAFE_NAND_RESET		0x3034
 
-int cafe_correct_ecc(unsigned char *buf,
-		     unsigned short *chk_syndrome_list);
-
 struct cafe_priv {
 	struct nand_chip nand;
 	struct pci_dev *pdev;
 	void __iomem *mmio;
+	struct rs_control *rs;
 	uint32_t ctl1;
 	uint32_t ctl2;
 	int datalen;
@@ -374,28 +373,66 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
 	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
 
 	if (checkecc && cafe_readl(cafe, NAND_ECC_RESULT) & (1<<18)) {
-		unsigned short syn[8];
-		int i;
+		unsigned short syn[8], pat[4];
+		int pos[4];
+		u8 *oob = chip->oob_poi;
+		int i, n;
 
 		for (i=0; i<8; i+=2) {
 			uint32_t tmp = cafe_readl(cafe, NAND_ECC_SYN01 + (i*2));
-			syn[i] = tmp & 0xfff;
-			syn[i+1] = (tmp >> 16) & 0xfff;
+			syn[i] = cafe->rs->index_of[tmp & 0xfff];
+			syn[i+1] = cafe->rs->index_of[(tmp >> 16) & 0xfff];
 		}
 
-		if ((i = cafe_correct_ecc(buf, syn)) < 0) {
+		n = decode_rs16(cafe->rs, NULL, NULL, 1367, syn, 0, pos, 0,
+		                pat);
+
+		for (i = 0; i < n; i++) {
+			int p = pos[i];
+
+			/* The 12-bit symbols are mapped to bytes here */
+
+			if (p > 1374) {
+				/* out of range */
+				n = -1374;
+			} else if (p == 0) {
+				/* high four bits do not correspond to data */
+				if (pat[i] > 0xff)
+					n = -2048;
+				else
+					buf[0] ^= pat[i];
+			} else if (p == 1365) {
+				buf[2047] ^= pat[i] >> 4;
+				oob[0] ^= pat[i] << 4;
+			} else if (p > 1365) {
+				if ((p & 1) == 1) {
+					oob[3*p/2 - 2048] ^= pat[i] >> 4;
+					oob[3*p/2 - 2047] ^= pat[i] << 4;
+				} else {
+					oob[3*p/2 - 2049] ^= pat[i] >> 8;
+					oob[3*p/2 - 2048] ^= pat[i];
+				}
+			} else if ((p & 1) == 1) {
+				buf[3*p/2] ^= pat[i] >> 4;
+				buf[3*p/2 + 1] ^= pat[i] << 4;
+			} else {
+				buf[3*p/2 - 1] ^= pat[i] >> 8;
+				buf[3*p/2] ^= pat[i];
+			}
+		}
+
+		if (n < 0) {
 			dev_dbg(&cafe->pdev->dev, "Failed to correct ECC at %08x\n",
 				cafe_readl(cafe, NAND_ADDR2) * 2048);
-			for (i=0; i< 0x5c; i+=4)
+			for (i = 0; i < 0x5c; i += 4)
 				printk("Register %x: %08x\n", i, readl(cafe->mmio + i));
 			mtd->ecc_stats.failed++;
 		} else {
-			dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", i);
-			mtd->ecc_stats.corrected += i;
+			dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", n);
+			mtd->ecc_stats.corrected += n;
 		}
 	}
 
-
 	return 0;
 }
 
@@ -525,6 +562,48 @@ static int cafe_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
 	return 0;
 }
 
+/* F_2[X]/(X**6+X+1)  */
+static unsigned short __devinit gf64_mul(u8 a, u8 b)
+{
+	u8 c;
+	unsigned int i;
+
+	c = 0;
+	for (i = 0; i < 6; i++) {
+		if (a & 1)
+			c ^= b;
+		a >>= 1;
+		b <<= 1;
+		if ((b & 0x40) != 0)
+			b ^= 0x43;
+	}
+
+	return c;
+}
+
+/* F_64[X]/(X**2+X+A**-1) with A the generator of F_64[X]  */
+static u16 __devinit gf4096_mul(u16 a, u16 b)
+{
+	u8 ah, al, bh, bl, ch, cl;
+
+	ah = a >> 6;
+	al = a & 0x3f;
+	bh = b >> 6;
+	bl = b & 0x3f;
+
+	ch = gf64_mul(ah ^ al, bh ^ bl) ^ gf64_mul(al, bl);
+	cl = gf64_mul(gf64_mul(ah, bh), 0x21) ^ gf64_mul(al, bl);
+
+	return (ch << 6) ^ cl;
+}
+
+static int __devinit cafe_mul(int x)
+{
+	if (x == 0)
+		return 1;
+	return gf4096_mul(x, 0xe01);
+}
+
 static int __devinit cafe_nand_probe(struct pci_dev *pdev,
 				     const struct pci_device_id *ent)
 {
@@ -564,6 +643,12 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
 	}
 	cafe->nand.buffers = (void *)cafe->dmabuf + 2112;
 
+	cafe->rs = init_rs_non_canonical(12, &cafe_mul, 0, 1, 8);
+	if (!cafe->rs) {
+		err = -ENOMEM;
+		goto out_ior;
+	}
+
 	cafe->nand.cmdfunc = cafe_nand_cmdfunc;
 	cafe->nand.dev_ready = cafe_device_ready;
 	cafe->nand.read_byte = cafe_read_byte;
@@ -713,6 +798,7 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev)
 	cafe_writel(cafe, ~1 & cafe_readl(cafe, GLOBAL_IRQ_MASK), GLOBAL_IRQ_MASK);
 	free_irq(pdev->irq, mtd);
 	nand_release(mtd);
+	free_rs(cafe->rs);
 	pci_iounmap(pdev, cafe->mmio);
 	dma_free_coherent(&cafe->pdev->dev, 2112, cafe->dmabuf, cafe->dmaaddr);
 	kfree(mtd);
diff --git a/drivers/mtd/nand/cafe_ecc.c b/drivers/mtd/nand/cafe_ecc.c
deleted file mode 100644
index ea5c8491d2c5..000000000000
--- a/drivers/mtd/nand/cafe_ecc.c
+++ /dev/null
@@ -1,1381 +0,0 @@
-/* Error correction for CAFÉ NAND controller
- *
- * © 2006 Marvell, Inc.
- * Author: Tom Chiou
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-
-static unsigned short gf4096_mul(unsigned short, unsigned short);
-static unsigned short gf64_mul(unsigned short, unsigned short);
-static unsigned short gf4096_inv(unsigned short);
-static unsigned short err_pos(unsigned short);
-static void find_4bit_err_coefs(unsigned short, unsigned short, unsigned short,
-				unsigned short, unsigned short, unsigned short,
-				unsigned short, unsigned short, unsigned short *);
-static void zero_4x5_col3(unsigned short[4][5]);
-static void zero_4x5_col2(unsigned short[4][5]);
-static void zero_4x5_col1(unsigned short[4][5]);
-static void swap_4x5_rows(unsigned short[4][5], int, int, int);
-static void swap_2x3_rows(unsigned short m[2][3]);
-static void solve_4x5(unsigned short m[4][5], unsigned short *, int *);
-static void sort_coefs(int *, unsigned short *, int);
-static void find_4bit_err_pats(unsigned short, unsigned short, unsigned short,
-			       unsigned short, unsigned short, unsigned short,
-			       unsigned short, unsigned short, unsigned short *);
-static void find_3bit_err_coefs(unsigned short, unsigned short, unsigned short,
-				unsigned short, unsigned short, unsigned short,
-				unsigned short *);
-static void zero_3x4_col2(unsigned short[3][4]);
-static void zero_3x4_col1(unsigned short[3][4]);
-static void swap_3x4_rows(unsigned short[3][4], int, int, int);
-static void solve_3x4(unsigned short[3][4], unsigned short *, int *);
-static void find_3bit_err_pats(unsigned short, unsigned short, unsigned short,
-			       unsigned short, unsigned short, unsigned short,
-			       unsigned short *);
-
-static void find_2bit_err_pats(unsigned short, unsigned short, unsigned short,
-			       unsigned short, unsigned short *);
-static void find_2x2_soln(unsigned short, unsigned short, unsigned short,
-			  unsigned short, unsigned short, unsigned short,
-			  unsigned short *);
-static void solve_2x3(unsigned short[2][3], unsigned short *);
-static int chk_no_err_only(unsigned short *, unsigned short *);
-static int chk_1_err_only(unsigned short *, unsigned short *);
-static int chk_2_err_only(unsigned short *, unsigned short *);
-static int chk_3_err_only(unsigned short *, unsigned short *);
-static int chk_4_err_only(unsigned short *, unsigned short *);
-
-static unsigned short gf64_mul(unsigned short a, unsigned short b)
-{
-	unsigned short tmp1, tmp2, tmp3, tmp4, tmp5;
-	unsigned short c_bit0, c_bit1, c_bit2, c_bit3, c_bit4, c_bit5, c;
-
-	tmp1 = ((a) ^ (a >> 5));
-	tmp2 = ((a >> 4) ^ (a >> 5));
-	tmp3 = ((a >> 3) ^ (a >> 4));
-	tmp4 = ((a >> 2) ^ (a >> 3));
-	tmp5 = ((a >> 1) ^ (a >> 2));
-
-	c_bit0 = ((a & b) ^ ((a >> 5) & (b >> 1)) ^ ((a >> 4) & (b >> 2)) ^
-		  ((a >> 3) & (b >> 3)) ^ ((a >> 2) & (b >> 4)) ^ ((a >> 1) & (b >> 5))) & 0x1;
-
-	c_bit1 = (((a >> 1) & b) ^ (tmp1 & (b >> 1)) ^ (tmp2 & (b >> 2)) ^
-		  (tmp3 & (b >> 3)) ^ (tmp4 & (b >> 4)) ^ (tmp5 & (b >> 5))) & 0x1;
-
-	c_bit2 = (((a >> 2) & b) ^ ((a >> 1) & (b >> 1)) ^ (tmp1 & (b >> 2)) ^
-		  (tmp2 & (b >> 3)) ^ (tmp3 & (b >> 4)) ^ (tmp4 & (b >> 5))) & 0x1;
-
-	c_bit3 = (((a >> 3) & b) ^ ((a >> 2) & (b >> 1)) ^ ((a >> 1) & (b >> 2)) ^
-		  (tmp1 & (b >> 3)) ^ (tmp2 & (b >> 4)) ^ (tmp3 & (b >> 5))) & 0x1;
-
-	c_bit4 = (((a >> 4) & b) ^ ((a >> 3) & (b >> 1)) ^ ((a >> 2) & (b >> 2)) ^
-		  ((a >> 1) & (b >> 3)) ^ (tmp1 & (b >> 4)) ^ (tmp2 & (b >> 5))) & 0x1;
-
-	c_bit5 = (((a >> 5) & b) ^ ((a >> 4) & (b >> 1)) ^ ((a >> 3) & (b >> 2)) ^
-		  ((a >> 2) & (b >> 3)) ^ ((a >> 1) & (b >> 4)) ^ (tmp1 & (b >> 5))) & 0x1;
-
-	c = c_bit0 | (c_bit1 << 1) | (c_bit2 << 2) | (c_bit3 << 3) | (c_bit4 << 4) | (c_bit5 << 5);
-
-	return c;
-}
-
-static unsigned short gf4096_mul(unsigned short a, unsigned short b)
-{
-	unsigned short ah, al, bh, bl, alxah, blxbh, ablh, albl, ahbh, ahbhB, c;
-
-	ah = (a >> 6) & 0x3f;
-	al = a & 0x3f;
-	bh = (b >> 6) & 0x3f;
-	bl = b & 0x3f;
-	alxah = al ^ ah;
-	blxbh = bl ^ bh;
-
-	ablh = gf64_mul(alxah, blxbh);
-	albl = gf64_mul(al, bl);
-	ahbh = gf64_mul(ah, bh);
-
-	ahbhB = ((ahbh & 0x1) << 5) |
-	    ((ahbh & 0x20) >> 1) |
-	    ((ahbh & 0x10) >> 1) | ((ahbh & 0x8) >> 1) | ((ahbh & 0x4) >> 1) | (((ahbh >> 1) ^ ahbh) & 0x1);
-
-	c = ((ablh ^ albl) << 6) | (ahbhB ^ albl);
-	return c;
-}
-
-static void find_2bit_err_pats(unsigned short s0, unsigned short s1, unsigned short r0, unsigned short r1, unsigned short *pats)
-{
-	find_2x2_soln(0x1, 0x1, r0, r1, s0, s1, pats);
-}
-
-static void find_3bit_err_coefs(unsigned short s0, unsigned short s1,
-				unsigned short s2, unsigned short s3, unsigned short s4, unsigned short s5, unsigned short *coefs)
-{
-	unsigned short m[3][4];
-	int row_order[3];
-
-	row_order[0] = 0;
-	row_order[1] = 1;
-	row_order[2] = 2;
-	m[0][0] = s2;
-	m[0][1] = s1;
-	m[0][2] = s0;
-	m[0][3] = s3;
-	m[1][0] = s3;
-	m[1][1] = s2;
-	m[1][2] = s1;
-	m[1][3] = s4;
-	m[2][0] = s4;
-	m[2][1] = s3;
-	m[2][2] = s2;
-	m[2][3] = s5;
-
-	if (m[0][2] != 0x0) {
-		zero_3x4_col2(m);
-	} else if (m[1][2] != 0x0) {
-		swap_3x4_rows(m, 0, 1, 4);
-		zero_3x4_col2(m);
-	} else if (m[2][2] != 0x0) {
-		swap_3x4_rows(m, 0, 2, 4);
-		zero_3x4_col2(m);
-	} else {
-		printk(KERN_ERR "Error: find_3bit_err_coefs, s0,s1,s2 all zeros!\n");
-	}
-
-	if (m[1][1] != 0x0) {
-		zero_3x4_col1(m);
-	} else if (m[2][1] != 0x0) {
-		swap_3x4_rows(m, 1, 2, 4);
-		zero_3x4_col1(m);
-	} else {
-		printk(KERN_ERR "Error: find_3bit_err_coefs, cannot resolve col 1!\n");
-	}
-
-	/* solve coefs */
-	solve_3x4(m, coefs, row_order);
-}
-
-static void zero_3x4_col2(unsigned short m[3][4])
-{
-	unsigned short minv1, minv2;
-
-	minv1 = gf4096_mul(m[1][2], gf4096_inv(m[0][2]));
-	minv2 = gf4096_mul(m[2][2], gf4096_inv(m[0][2]));
-	m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv1);
-	m[1][1] = m[1][1] ^ gf4096_mul(m[0][1], minv1);
-	m[1][3] = m[1][3] ^ gf4096_mul(m[0][3], minv1);
-	m[2][0] = m[2][0] ^ gf4096_mul(m[0][0], minv2);
-	m[2][1] = m[2][1] ^ gf4096_mul(m[0][1], minv2);
-	m[2][3] = m[2][3] ^ gf4096_mul(m[0][3], minv2);
-}
-
-static void zero_3x4_col1(unsigned short m[3][4])
-{
-	unsigned short minv;
-	minv = gf4096_mul(m[2][1], gf4096_inv(m[1][1]));
-	m[2][0] = m[2][0] ^ gf4096_mul(m[1][0], minv);
-	m[2][3] = m[2][3] ^ gf4096_mul(m[1][3], minv);
-}
-
-static void swap_3x4_rows(unsigned short m[3][4], int i, int j, int col_width)
-{
-	unsigned short tmp0;
-	int cnt;
-	for (cnt = 0; cnt < col_width; cnt++) {
-		tmp0 = m[i][cnt];
-		m[i][cnt] = m[j][cnt];
-		m[j][cnt] = tmp0;
-	}
-}
-
-static void solve_3x4(unsigned short m[3][4], unsigned short *coefs, int *row_order)
-{
-	unsigned short tmp[3];
-	tmp[0] = gf4096_mul(m[2][3], gf4096_inv(m[2][0]));
-	tmp[1] = gf4096_mul((gf4096_mul(tmp[0], m[1][0]) ^ m[1][3]), gf4096_inv(m[1][1]));
-	tmp[2] = gf4096_mul((gf4096_mul(tmp[0], m[0][0]) ^ gf4096_mul(tmp[1], m[0][1]) ^ m[0][3]), gf4096_inv(m[0][2]));
-	sort_coefs(row_order, tmp, 3);
-	coefs[0] = tmp[0];
-	coefs[1] = tmp[1];
-	coefs[2] = tmp[2];
-}
-
-static void find_3bit_err_pats(unsigned short s0, unsigned short s1,
-			       unsigned short s2, unsigned short r0,
-			       unsigned short r1, unsigned short r2,
-			       unsigned short *pats)
-{
-	find_2x2_soln(r0 ^ r2, r1 ^ r2,
-		      gf4096_mul(r0, r0 ^ r2), gf4096_mul(r1, r1 ^ r2),
-		      gf4096_mul(s0, r2) ^ s1, gf4096_mul(s1, r2) ^ s2, pats);
-	pats[2] = s0 ^ pats[0] ^ pats[1];
-}
-
-static void find_4bit_err_coefs(unsigned short s0, unsigned short s1,
-				unsigned short s2, unsigned short s3,
-				unsigned short s4, unsigned short s5,
-				unsigned short s6, unsigned short s7,
-				unsigned short *coefs)
-{
-	unsigned short m[4][5];
-	int row_order[4];
-
-	row_order[0] = 0;
-	row_order[1] = 1;
-	row_order[2] = 2;
-	row_order[3] = 3;
-
-	m[0][0] = s3;
-	m[0][1] = s2;
-	m[0][2] = s1;
-	m[0][3] = s0;
-	m[0][4] = s4;
-	m[1][0] = s4;
-	m[1][1] = s3;
-	m[1][2] = s2;
-	m[1][3] = s1;
-	m[1][4] = s5;
-	m[2][0] = s5;
-	m[2][1] = s4;
-	m[2][2] = s3;
-	m[2][3] = s2;
-	m[2][4] = s6;
-	m[3][0] = s6;
-	m[3][1] = s5;
-	m[3][2] = s4;
-	m[3][3] = s3;
-	m[3][4] = s7;
-
-	if (m[0][3] != 0x0) {
-		zero_4x5_col3(m);
-	} else if (m[1][3] != 0x0) {
-		swap_4x5_rows(m, 0, 1, 5);
-		zero_4x5_col3(m);
-	} else if (m[2][3] != 0x0) {
-		swap_4x5_rows(m, 0, 2, 5);
-		zero_4x5_col3(m);
-	} else if (m[3][3] != 0x0) {
-		swap_4x5_rows(m, 0, 3, 5);
-		zero_4x5_col3(m);
-	} else {
-		printk(KERN_ERR "Error: find_4bit_err_coefs, s0,s1,s2,s3 all zeros!\n");
-	}
-
-	if (m[1][2] != 0x0) {
-		zero_4x5_col2(m);
-	} else if (m[2][2] != 0x0) {
-		swap_4x5_rows(m, 1, 2, 5);
-		zero_4x5_col2(m);
-	} else if (m[3][2] != 0x0) {
-		swap_4x5_rows(m, 1, 3, 5);
-		zero_4x5_col2(m);
-	} else {
-		printk(KERN_ERR "Error: find_4bit_err_coefs, cannot resolve col 2!\n");
-	}
-
-	if (m[2][1] != 0x0) {
-		zero_4x5_col1(m);
-	} else if (m[3][1] != 0x0) {
-		swap_4x5_rows(m, 2, 3, 5);
-		zero_4x5_col1(m);
-	} else {
-		printk(KERN_ERR "Error: find_4bit_err_coefs, cannot resolve col 1!\n");
-	}
-
-	solve_4x5(m, coefs, row_order);
-}
-
-static void zero_4x5_col3(unsigned short m[4][5])
-{
-	unsigned short minv1, minv2, minv3;
-
-	minv1 = gf4096_mul(m[1][3], gf4096_inv(m[0][3]));
-	minv2 = gf4096_mul(m[2][3], gf4096_inv(m[0][3]));
-	minv3 = gf4096_mul(m[3][3], gf4096_inv(m[0][3]));
-
-	m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv1);
-	m[1][1] = m[1][1] ^ gf4096_mul(m[0][1], minv1);
-	m[1][2] = m[1][2] ^ gf4096_mul(m[0][2], minv1);
-	m[1][4] = m[1][4] ^ gf4096_mul(m[0][4], minv1);
-	m[2][0] = m[2][0] ^ gf4096_mul(m[0][0], minv2);
-	m[2][1] = m[2][1] ^ gf4096_mul(m[0][1], minv2);
-	m[2][2] = m[2][2] ^ gf4096_mul(m[0][2], minv2);
-	m[2][4] = m[2][4] ^ gf4096_mul(m[0][4], minv2);
-	m[3][0] = m[3][0] ^ gf4096_mul(m[0][0], minv3);
-	m[3][1] = m[3][1] ^ gf4096_mul(m[0][1], minv3);
-	m[3][2] = m[3][2] ^ gf4096_mul(m[0][2], minv3);
-	m[3][4] = m[3][4] ^ gf4096_mul(m[0][4], minv3);
-}
-
-static void zero_4x5_col2(unsigned short m[4][5])
-{
-	unsigned short minv2, minv3;
-
-	minv2 = gf4096_mul(m[2][2], gf4096_inv(m[1][2]));
-	minv3 = gf4096_mul(m[3][2], gf4096_inv(m[1][2]));
-
-	m[2][0] = m[2][0] ^ gf4096_mul(m[1][0], minv2);
-	m[2][1] = m[2][1] ^ gf4096_mul(m[1][1], minv2);
-	m[2][4] = m[2][4] ^ gf4096_mul(m[1][4], minv2);
-	m[3][0] = m[3][0] ^ gf4096_mul(m[1][0], minv3);
-	m[3][1] = m[3][1] ^ gf4096_mul(m[1][1], minv3);
-	m[3][4] = m[3][4] ^ gf4096_mul(m[1][4], minv3);
-}
-
-static void zero_4x5_col1(unsigned short m[4][5])
-{
-	unsigned short minv;
-
-	minv = gf4096_mul(m[3][1], gf4096_inv(m[2][1]));
-
-	m[3][0] = m[3][0] ^ gf4096_mul(m[2][0], minv);
-	m[3][4] = m[3][4] ^ gf4096_mul(m[2][4], minv);
-}
-
-static void swap_4x5_rows(unsigned short m[4][5], int i, int j, int col_width)
-{
-	unsigned short tmp0;
-	int cnt;
-
-	for (cnt = 0; cnt < col_width; cnt++) {
-		tmp0 = m[i][cnt];
-		m[i][cnt] = m[j][cnt];
-		m[j][cnt] = tmp0;
-	}
-}
-
-static void solve_4x5(unsigned short m[4][5], unsigned short *coefs, int *row_order)
-{
-	unsigned short tmp[4];
-
-	tmp[0] = gf4096_mul(m[3][4], gf4096_inv(m[3][0]));
-	tmp[1] = gf4096_mul((gf4096_mul(tmp[0], m[2][0]) ^ m[2][4]), gf4096_inv(m[2][1]));
-	tmp[2] = gf4096_mul((gf4096_mul(tmp[0], m[1][0]) ^ gf4096_mul(tmp[1], m[1][1]) ^ m[1][4]), gf4096_inv(m[1][2]));
-	tmp[3] = gf4096_mul((gf4096_mul(tmp[0], m[0][0]) ^
-			gf4096_mul(tmp[1], m[0][1]) ^ gf4096_mul(tmp[2], m[0][2]) ^ m[0][4]), gf4096_inv(m[0][3]));
-	sort_coefs(row_order, tmp, 4);
-	coefs[0] = tmp[0];
-	coefs[1] = tmp[1];
-	coefs[2] = tmp[2];
-	coefs[3] = tmp[3];
-}
-
-static void sort_coefs(int *order, unsigned short *soln, int len)
-{
-	int cnt, start_cnt, least_ord, least_cnt;
-	unsigned short tmp0;
-	for (start_cnt = 0; start_cnt < len; start_cnt++) {
-		for (cnt = start_cnt; cnt < len; cnt++) {
-			if (cnt == start_cnt) {
-				least_ord = order[cnt];
-				least_cnt = start_cnt;
-			} else {
-				if (least_ord > order[cnt]) {
-					least_ord = order[cnt];
-					least_cnt = cnt;
-				}
-			}
-		}
-		if (least_cnt != start_cnt) {
-			tmp0 = order[least_cnt];
-			order[least_cnt] = order[start_cnt];
-			order[start_cnt] = tmp0;
-			tmp0 = soln[least_cnt];
-			soln[least_cnt] = soln[start_cnt];
-			soln[start_cnt] = tmp0;
-		}
-	}
-}
-
-static void find_4bit_err_pats(unsigned short s0, unsigned short s1,
-			       unsigned short s2, unsigned short s3,
-			       unsigned short z1, unsigned short z2,
-			       unsigned short z3, unsigned short z4,
-			       unsigned short *pats)
-{
-	unsigned short z4_z1, z3z4_z3z3, z4_z2, s0z4_s1, z1z4_z1z1,
-		z4_z3, z2z4_z2z2, s1z4_s2, z3z3z4_z3z3z3, z1z1z4_z1z1z1, z2z2z4_z2z2z2, s2z4_s3;
-	unsigned short tmp0, tmp1, tmp2, tmp3;
-
-	z4_z1 = z4 ^ z1;
-	z3z4_z3z3 = gf4096_mul(z3, z4) ^ gf4096_mul(z3, z3);
-	z4_z2 = z4 ^ z2;
-	s0z4_s1 = gf4096_mul(s0, z4) ^ s1;
-	z1z4_z1z1 = gf4096_mul(z1, z4) ^ gf4096_mul(z1, z1);
-	z4_z3 = z4 ^ z3;
-	z2z4_z2z2 = gf4096_mul(z2, z4) ^ gf4096_mul(z2, z2);
-	s1z4_s2 = gf4096_mul(s1, z4) ^ s2;
-	z3z3z4_z3z3z3 = gf4096_mul(gf4096_mul(z3, z3), z4) ^ gf4096_mul(gf4096_mul(z3, z3), z3);
-	z1z1z4_z1z1z1 = gf4096_mul(gf4096_mul(z1, z1), z4) ^ gf4096_mul(gf4096_mul(z1, z1), z1);
-	z2z2z4_z2z2z2 = gf4096_mul(gf4096_mul(z2, z2), z4) ^ gf4096_mul(gf4096_mul(z2, z2), z2);
-	s2z4_s3 = gf4096_mul(s2, z4) ^ s3;
-
-	//find err pat 0,1
-	find_2x2_soln(gf4096_mul(z4_z1, z3z4_z3z3) ^
-		      gf4096_mul(z1z4_z1z1, z4_z3), gf4096_mul(z4_z2,
-							       z3z4_z3z3) ^
-		      gf4096_mul(z2z4_z2z2, z4_z3), gf4096_mul(z1z4_z1z1,
-							       z3z3z4_z3z3z3) ^
-		      gf4096_mul(z1z1z4_z1z1z1, z3z4_z3z3),
-		      gf4096_mul(z2z4_z2z2,
-				 z3z3z4_z3z3z3) ^ gf4096_mul(z2z2z4_z2z2z2,
-							     z3z4_z3z3),
-		      gf4096_mul(s0z4_s1, z3z4_z3z3) ^ gf4096_mul(s1z4_s2,
-								  z4_z3),
-		      gf4096_mul(s1z4_s2, z3z3z4_z3z3z3) ^ gf4096_mul(s2z4_s3, z3z4_z3z3), pats);
-	tmp0 = pats[0];
-	tmp1 = pats[1];
-	tmp2 = pats[0] ^ pats[1] ^ s0;
-	tmp3 = gf4096_mul(pats[0], z1) ^ gf4096_mul(pats[1], z2) ^ s1;
-
-	//find err pat 2,3
-	find_2x2_soln(0x1, 0x1, z3, z4, tmp2, tmp3, pats);
-	pats[2] = pats[0];
-	pats[3] = pats[1];
-	pats[0] = tmp0;
-	pats[1] = tmp1;
-}
-
-static void find_2x2_soln(unsigned short c00, unsigned short c01,
-			  unsigned short c10, unsigned short c11,
-			  unsigned short lval0, unsigned short lval1,
-			  unsigned short *soln)
-{
-	unsigned short m[2][3];
-	m[0][0] = c00;
-	m[0][1] = c01;
-	m[0][2] = lval0;
-	m[1][0] = c10;
-	m[1][1] = c11;
-	m[1][2] = lval1;
-
-	if (m[0][1] != 0x0) {
-		/* */
-	} else if (m[1][1] != 0x0) {
-		swap_2x3_rows(m);
-	} else {
-		printk(KERN_ERR "Warning: find_2bit_err_coefs, s0,s1 all zeros!\n");
-	}
-
-	solve_2x3(m, soln);
-}
-
-static void swap_2x3_rows(unsigned short m[2][3])
-{
-	unsigned short tmp0;
-	int cnt;
-
-	for (cnt = 0; cnt < 3; cnt++) {
-		tmp0 = m[0][cnt];
-		m[0][cnt] = m[1][cnt];
-		m[1][cnt] = tmp0;
-	}
-}
-
-static void solve_2x3(unsigned short m[2][3], unsigned short *coefs)
-{
-	unsigned short minv;
-
-	minv = gf4096_mul(m[1][1], gf4096_inv(m[0][1]));
-	m[1][0] = m[1][0] ^ gf4096_mul(m[0][0], minv);
-	m[1][2] = m[1][2] ^ gf4096_mul(m[0][2], minv);
-	coefs[0] = gf4096_mul(m[1][2], gf4096_inv(m[1][0]));
-	coefs[1] = gf4096_mul((gf4096_mul(coefs[0], m[0][0]) ^ m[0][2]), gf4096_inv(m[0][1]));
-}
-
-static unsigned char gf64_inv[64] = {
-	 0,  1, 33, 62, 49, 43, 31, 44, 57, 37, 52, 28, 46, 40, 22, 25,
-	61, 54, 51, 39, 26, 35, 14, 24, 23, 15, 20, 34, 11, 53, 45,  6,
-	63,  2, 27, 21, 56,  9, 50, 19, 13, 47, 48,  5,  7, 30, 12, 41,
-	42,  4, 38, 18, 10, 29, 17, 60, 36,  8, 59, 58, 55, 16,  3, 32
-};
-
-static unsigned short gf4096_inv(unsigned short din)
-{
-	unsigned short alahxal, ah2B, deno, inv, bl, bh;
-	unsigned short ah, al, ahxal;
-	unsigned short dout;
-
-	ah = (din >> 6) & 0x3f;
-	al = din & 0x3f;
-	ahxal = ah ^ al;
-	ah2B = (((ah ^ (ah >> 3)) & 0x1) << 5) |
-		((ah >> 1) & 0x10) |
-		((((ah >> 5) ^ (ah >> 2)) & 0x1) << 3) |
-		((ah >> 2) & 0x4) | ((((ah >> 4) ^ (ah >> 1)) & 0x1) << 1) | (ah & 0x1);
-	alahxal = gf64_mul(ahxal, al);
-	deno = alahxal ^ ah2B;
-	inv = gf64_inv[deno];
-	bl = gf64_mul(inv, ahxal);
-	bh = gf64_mul(inv, ah);
-	dout = ((bh & 0x3f) << 6) | (bl & 0x3f);
-	return (((bh & 0x3f) << 6) | (bl & 0x3f));
-}
-
-static unsigned short err_pos_lut[4096] = {
-	0xfff, 0x000, 0x451, 0xfff, 0xfff, 0x3cf, 0xfff, 0x041,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x28a, 0xfff, 0x492, 0xfff,
-	0x145, 0xfff, 0xfff, 0x514, 0xfff, 0x082, 0xfff, 0xfff,
-	0xfff, 0x249, 0x38e, 0x410, 0xfff, 0x104, 0x208, 0x1c7,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x2cb, 0xfff, 0xfff, 0xfff,
-	0x0c3, 0x34d, 0x4d3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x186, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x30c, 0x555, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x166, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x385, 0x14e, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4e1,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x538, 0xfff, 0x16d, 0xfff,
-	0xfff, 0xfff, 0x45b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x29c, 0x2cc, 0x30b, 0x2b3, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0b3, 0xfff, 0x2f7,
-	0xfff, 0x32b, 0xfff, 0xfff, 0xfff, 0xfff, 0x0a7, 0xfff,
-	0xfff, 0x2da, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x07e, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x11c, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x22f, 0xfff, 0x1f4, 0xfff, 0xfff,
-	0x2b0, 0x504, 0xfff, 0x114, 0xfff, 0xfff, 0xfff, 0x21d,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x00d, 0x3c4, 0x340, 0x10f,
-	0xfff, 0xfff, 0x266, 0x02e, 0xfff, 0xfff, 0xfff, 0x4f8,
-	0x337, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x07b, 0x168, 0xfff, 0xfff, 0x0fe,
-	0xfff, 0xfff, 0x51a, 0xfff, 0x458, 0xfff, 0x36d, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x073, 0x37d, 0x415, 0x550, 0xfff,
-	0xfff, 0xfff, 0x23b, 0x4b4, 0xfff, 0xfff, 0xfff, 0x1a1,
-	0xfff, 0xfff, 0x3aa, 0xfff, 0x117, 0x04d, 0x341, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x518, 0x03e, 0x0f2, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x363, 0xfff, 0x0b9, 0xfff, 0xfff,
-	0x241, 0xfff, 0xfff, 0x049, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x15f, 0x52d, 0xfff, 0xfff, 0xfff, 0x29e, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x4cf, 0x0fc, 0xfff, 0x36f, 0x3d3, 0xfff,
-	0x228, 0xfff, 0xfff, 0x45e, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x238, 0xfff, 0xfff, 0xfff, 0xfff, 0x47f, 0xfff, 0xfff,
-	0x43a, 0x265, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x3e8,
-	0xfff, 0xfff, 0x01a, 0xfff, 0xfff, 0xfff, 0xfff, 0x21e,
-	0x1fc, 0x40b, 0xfff, 0xfff, 0xfff, 0x2d0, 0x159, 0xfff,
-	0xfff, 0x313, 0xfff, 0xfff, 0x05c, 0x4cc, 0xfff, 0xfff,
-	0x0f6, 0x3d5, 0xfff, 0xfff, 0xfff, 0x54f, 0xfff, 0xfff,
-	0xfff, 0x172, 0x1e4, 0x07c, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x53c, 0x1ad, 0x535,
-	0x19b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x092, 0xfff, 0x2be, 0xfff, 0xfff, 0x482,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0e6, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x476, 0xfff, 0x51d, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x342, 0x2b5, 0x22e, 0x09a, 0xfff, 0x08d,
-	0x44f, 0x3ed, 0xfff, 0xfff, 0xfff, 0xfff, 0x3d1, 0xfff,
-	0xfff, 0x543, 0xfff, 0x48f, 0xfff, 0x3d2, 0xfff, 0x0d5,
-	0x113, 0x0ec, 0x427, 0xfff, 0xfff, 0xfff, 0x4c4, 0xfff,
-	0xfff, 0x50a, 0xfff, 0x144, 0xfff, 0x105, 0x39f, 0x294,
-	0x164, 0xfff, 0x31a, 0xfff, 0xfff, 0x49a, 0xfff, 0x130,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x1be, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x49e, 0x371, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x0e8, 0x49c, 0x0f4, 0xfff,
-	0x338, 0x1a7, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x36c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x1ae, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x31b, 0xfff, 0xfff, 0x2dd, 0x522, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2f4,
-	0x3c6, 0x30d, 0xfff, 0xfff, 0xfff, 0xfff, 0x34c, 0x18f,
-	0x30a, 0xfff, 0x01f, 0x079, 0xfff, 0xfff, 0x54d, 0x46b,
-	0x28c, 0x37f, 0xfff, 0xfff, 0xfff, 0xfff, 0x355, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x14f, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x359, 0x3fe, 0x3c5, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x423, 0xfff, 0xfff, 0x34a, 0x22c, 0xfff,
-	0x25a, 0xfff, 0xfff, 0x4ad, 0xfff, 0x28d, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x547, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x2e2, 0xfff, 0xfff, 0x1d5, 0xfff, 0x2a8, 0xfff, 0xfff,
-	0x03f, 0xfff, 0xfff, 0xfff, 0xfff, 0x3eb, 0x0fa, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x55b, 0xfff,
-	0x08e, 0xfff, 0x3ae, 0xfff, 0x3a4, 0xfff, 0x282, 0x158,
-	0xfff, 0x382, 0xfff, 0xfff, 0x499, 0xfff, 0xfff, 0x08a,
-	0xfff, 0xfff, 0xfff, 0x456, 0x3be, 0xfff, 0x1e2, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x559, 0xfff, 0x1a0, 0xfff,
-	0xfff, 0x0b4, 0xfff, 0xfff, 0xfff, 0x2df, 0xfff, 0xfff,
-	0xfff, 0x07f, 0x4f5, 0xfff, 0xfff, 0x27c, 0x133, 0x017,
-	0xfff, 0x3fd, 0xfff, 0xfff, 0xfff, 0x44d, 0x4cd, 0x17a,
-	0x0d7, 0x537, 0xfff, 0xfff, 0x353, 0xfff, 0xfff, 0x351,
-	0x366, 0xfff, 0x44a, 0xfff, 0x1a6, 0xfff, 0xfff, 0xfff,
-	0x291, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1e3,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x389, 0xfff, 0x07a, 0xfff,
-	0x1b6, 0x2ed, 0xfff, 0xfff, 0xfff, 0xfff, 0x24e, 0x074,
-	0xfff, 0xfff, 0x3dc, 0xfff, 0x4e3, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x4eb, 0xfff, 0xfff, 0x3b8, 0x4de, 0xfff, 0x19c,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x262,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x076, 0x4e8, 0x3da,
-	0xfff, 0x531, 0xfff, 0xfff, 0x14a, 0xfff, 0x0a2, 0x433,
-	0x3df, 0x1e9, 0xfff, 0xfff, 0xfff, 0xfff, 0x3e7, 0x285,
-	0x2d8, 0xfff, 0xfff, 0xfff, 0x349, 0x18d, 0x098, 0xfff,
-	0x0df, 0x4bf, 0xfff, 0xfff, 0x0b2, 0xfff, 0x346, 0x24d,
-	0xfff, 0xfff, 0xfff, 0x24f, 0x4fa, 0x2f9, 0xfff, 0xfff,
-	0x3c9, 0xfff, 0x2b4, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x056, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x179, 0xfff, 0x0e9, 0x3f0, 0x33d, 0xfff, 0xfff,
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-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x1b9, 0x037, 0x0dd,
-	0xfff, 0xfff, 0xfff, 0x2bf, 0x521, 0x496, 0x095, 0xfff,
-	0xfff, 0x328, 0x070, 0x1bf, 0xfff, 0x393, 0xfff, 0xfff,
-	0x102, 0xfff, 0xfff, 0x21b, 0xfff, 0x142, 0x263, 0x519,
-	0xfff, 0x2a5, 0x177, 0xfff, 0x14d, 0x471, 0x4ae, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x1f6, 0xfff, 0x481, 0xfff, 0xfff, 0xfff, 0x151, 0xfff,
-	0xfff, 0xfff, 0x085, 0x33f, 0xfff, 0xfff, 0xfff, 0x084,
-	0xfff, 0xfff, 0xfff, 0x345, 0x3a2, 0xfff, 0xfff, 0x0a0,
-	0x0da, 0x024, 0xfff, 0xfff, 0xfff, 0x1bd, 0xfff, 0x55c,
-	0x467, 0x445, 0xfff, 0xfff, 0xfff, 0x052, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x51e, 0xfff, 0xfff, 0x39d, 0xfff, 0x35f,
-	0xfff, 0x376, 0x3ee, 0xfff, 0xfff, 0xfff, 0xfff, 0x448,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x16a,
-	0xfff, 0x036, 0x38f, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x211,
-	0xfff, 0xfff, 0xfff, 0x230, 0xfff, 0xfff, 0x3ba, 0xfff,
-	0xfff, 0xfff, 0x3ce, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x229, 0xfff, 0x176, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x00b, 0xfff, 0x162, 0x018, 0xfff,
-	0xfff, 0x233, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x400, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x12b, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x3f4, 0xfff, 0x0f0, 0xfff, 0x1ac, 0xfff, 0xfff,
-	0x119, 0xfff, 0x2c0, 0xfff, 0xfff, 0xfff, 0x49b, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x23c, 0xfff,
-	0x4b3, 0x010, 0x064, 0xfff, 0xfff, 0x4ba, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x3c2, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x006, 0x196, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x100, 0x191, 0xfff,
-	0x1ea, 0x29f, 0xfff, 0xfff, 0xfff, 0x276, 0xfff, 0xfff,
-	0x2b1, 0x3b9, 0xfff, 0x03c, 0xfff, 0xfff, 0xfff, 0x180,
-	0xfff, 0x08f, 0xfff, 0xfff, 0x19e, 0x019, 0xfff, 0x0b0,
-	0x0fd, 0x332, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x06b, 0x2e8, 0xfff, 0x446, 0xfff, 0xfff, 0x004,
-	0x247, 0x197, 0xfff, 0x112, 0x169, 0x292, 0xfff, 0x302,
-	0xfff, 0xfff, 0x33b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x287, 0x21f, 0xfff, 0x3ea, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x4e7, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x3a8, 0xfff, 0xfff, 0x2bc, 0xfff,
-	0x484, 0x296, 0xfff, 0x1c9, 0x08c, 0x1e5, 0x48a, 0xfff,
-	0x360, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x1ca, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x10d, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x066, 0x2ea, 0x28b, 0x25b, 0xfff, 0x072,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x2b6, 0xfff, 0xfff, 0x272,
-	0xfff, 0xfff, 0x525, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x2ca, 0xfff, 0xfff, 0xfff, 0x299, 0xfff, 0xfff, 0xfff,
-	0x558, 0x41a, 0xfff, 0x4f7, 0x557, 0xfff, 0x4a0, 0x344,
-	0x12c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x125,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x40e, 0xfff, 0xfff, 0x502, 0xfff, 0x103, 0x3e6, 0xfff,
-	0x527, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x45d, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x44e, 0xfff, 0xfff, 0xfff, 0xfff, 0x0d2, 0x4c9, 0x35e,
-	0x459, 0x2d9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x17d,
-	0x0c4, 0xfff, 0xfff, 0xfff, 0x3ac, 0x390, 0x094, 0xfff,
-	0x483, 0x0ab, 0xfff, 0x253, 0xfff, 0x391, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x123, 0x0ef, 0xfff, 0xfff, 0xfff, 0x330,
-	0x38c, 0xfff, 0xfff, 0x2ae, 0xfff, 0xfff, 0xfff, 0x042,
-	0x012, 0x06d, 0xfff, 0xfff, 0xfff, 0x32a, 0x3db, 0x364,
-	0x2dc, 0xfff, 0x30f, 0x3d7, 0x4a5, 0x050, 0xfff, 0xfff,
-	0x029, 0xfff, 0xfff, 0xfff, 0xfff, 0x1d1, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x480, 0xfff,
-	0x4ed, 0x081, 0x0a1, 0xfff, 0xfff, 0xfff, 0x30e, 0x52f,
-	0x257, 0xfff, 0xfff, 0x447, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x401, 0x3cc, 0xfff, 0xfff, 0x0fb,
-	0x2c9, 0x42a, 0x314, 0x33e, 0x3bd, 0x318, 0xfff, 0x10e,
-	0x2a1, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x24c,
-	0x506, 0xfff, 0x267, 0xfff, 0xfff, 0x219, 0xfff, 0x1eb,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x309, 0x3e2, 0x46c, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x384, 0xfff, 0xfff, 0xfff, 0xfff, 0x50c, 0xfff, 0x24b,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x038,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x194,
-	0x143, 0x3e3, 0xfff, 0xfff, 0xfff, 0x4c2, 0xfff, 0xfff,
-	0x0e1, 0x25c, 0xfff, 0x237, 0xfff, 0x1fe, 0xfff, 0xfff,
-	0xfff, 0x065, 0x2a4, 0xfff, 0x386, 0x55a, 0x11b, 0xfff,
-	0xfff, 0x192, 0xfff, 0x183, 0x00e, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x4b2, 0x18e, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x486, 0x4ef, 0x0c6, 0x380, 0xfff, 0x4a8, 0xfff,
-	0x0c5, 0xfff, 0xfff, 0xfff, 0xfff, 0x093, 0x1b8, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2e6,
-	0xfff, 0x0f3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x28e, 0xfff, 0x53b, 0x420, 0x22a, 0x33a, 0xfff, 0x387,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2a3, 0xfff, 0xfff,
-	0xfff, 0x428, 0x500, 0xfff, 0xfff, 0x120, 0x2c6, 0x290,
-	0x2f5, 0x0e3, 0xfff, 0x0b7, 0xfff, 0x319, 0x474, 0xfff,
-	0xfff, 0xfff, 0x529, 0x014, 0xfff, 0x41b, 0x40a, 0x18b,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x0d9,
-	0xfff, 0x38a, 0xfff, 0xfff, 0xfff, 0xfff, 0x1ce, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x3b1, 0xfff, 0xfff, 0x05d,
-	0x2c4, 0xfff, 0xfff, 0x4af, 0xfff, 0x030, 0xfff, 0xfff,
-	0x203, 0xfff, 0x277, 0x256, 0xfff, 0xfff, 0xfff, 0x4f9,
-	0xfff, 0x2c7, 0xfff, 0x466, 0x016, 0x1cd, 0xfff, 0x167,
-	0xfff, 0xfff, 0x0c8, 0xfff, 0x43d, 0xfff, 0xfff, 0x020,
-	0xfff, 0xfff, 0x232, 0x1cb, 0x1e0, 0xfff, 0xfff, 0x347,
-	0xfff, 0x478, 0xfff, 0x365, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x358, 0xfff, 0x10b, 0xfff, 0x35d, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x452, 0x22d, 0xfff, 0xfff, 0x47d, 0xfff,
-	0x2f3, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x460, 0xfff,
-	0xfff, 0xfff, 0x50b, 0xfff, 0xfff, 0xfff, 0x2ec, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x4b1, 0x422, 0xfff, 0xfff,
-	0xfff, 0x2d4, 0xfff, 0x239, 0xfff, 0xfff, 0xfff, 0x439,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x491, 0x075, 0xfff, 0xfff, 0xfff, 0x06c, 0xfff,
-	0xfff, 0x0f9, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x139, 0xfff, 0x4f6, 0xfff, 0xfff, 0x409, 0xfff,
-	0xfff, 0x15b, 0xfff, 0xfff, 0x348, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x4a2, 0x49d, 0xfff, 0x033, 0x175, 0xfff, 0x039,
-	0xfff, 0x312, 0x40c, 0xfff, 0xfff, 0x325, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x4aa, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0x165, 0x3bc, 0x48c, 0x310, 0x096,
-	0xfff, 0xfff, 0x250, 0x1a2, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x20d, 0x2ac, 0xfff, 0xfff, 0x39b, 0xfff, 0x377, 0xfff,
-	0x512, 0x495, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x357, 0x4ea, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x198, 0xfff, 0xfff, 0xfff, 0x434, 0x04a,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x062, 0xfff, 0x1d6, 0x1c8,
-	0xfff, 0x1f3, 0x281, 0xfff, 0x462, 0xfff, 0xfff, 0xfff,
-	0x4b0, 0xfff, 0x207, 0xfff, 0xfff, 0xfff, 0xfff, 0x3dd,
-	0xfff, 0xfff, 0x55d, 0xfff, 0x552, 0x494, 0x1af, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x227, 0xfff, 0xfff, 0x069,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x43e,
-	0x0b5, 0xfff, 0x524, 0x2d2, 0xfff, 0xfff, 0xfff, 0x28f,
-	0xfff, 0x01b, 0x50e, 0xfff, 0xfff, 0x1bb, 0xfff, 0xfff,
-	0x41d, 0xfff, 0x32e, 0x48e, 0xfff, 0x1f7, 0x224, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x394, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x52c, 0xfff, 0xfff, 0xfff, 0x392, 0xfff, 0x1e7,
-	0xfff, 0xfff, 0x3f9, 0x3a7, 0xfff, 0x51f, 0xfff, 0x0bb,
-	0x118, 0x3ca, 0xfff, 0x1dd, 0xfff, 0x48b, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x50f, 0xfff, 0x0d6, 0xfff, 0x1fa, 0xfff,
-	0x11e, 0xfff, 0xfff, 0xfff, 0xfff, 0x4d7, 0xfff, 0x078,
-	0x008, 0xfff, 0x25d, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x032, 0x33c, 0xfff, 0x4d9, 0x160, 0xfff, 0xfff, 0x300,
-	0x0b1, 0xfff, 0x322, 0xfff, 0x4ec, 0xfff, 0xfff, 0x200,
-	0x00c, 0x369, 0x473, 0xfff, 0xfff, 0x32c, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x53e, 0x3d4, 0x417, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x34b, 0x001, 0x39a, 0x02c, 0xfff, 0xfff, 0x2ce, 0x00f,
-	0xfff, 0x0ba, 0xfff, 0xfff, 0xfff, 0xfff, 0x060, 0xfff,
-	0x406, 0xfff, 0xfff, 0xfff, 0x4ee, 0x4ac, 0xfff, 0x43f,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x29b, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x216,
-	0x190, 0xfff, 0x396, 0x464, 0xfff, 0xfff, 0x323, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x2e9, 0xfff, 0x26d,
-	0x2cd, 0x040, 0xfff, 0xfff, 0xfff, 0xfff, 0x38b, 0x3c0,
-	0xfff, 0xfff, 0xfff, 0x1f2, 0xfff, 0x0ea, 0xfff, 0xfff,
-	0x472, 0xfff, 0x1fb, 0xfff, 0xfff, 0x0af, 0x27f, 0xfff,
-	0xfff, 0xfff, 0x479, 0x023, 0xfff, 0x0d8, 0x3b3, 0xfff,
-	0xfff, 0xfff, 0x121, 0xfff, 0xfff, 0x3bf, 0xfff, 0xfff,
-	0x16b, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x45a, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x0be, 0xfff, 0xfff, 0xfff, 0x111, 0xfff, 0x220,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x09b, 0x218, 0xfff, 0x022, 0x202, 0xfff,
-	0x4c8, 0xfff, 0x0ed, 0xfff, 0xfff, 0x182, 0xfff, 0xfff,
-	0xfff, 0x17f, 0x213, 0xfff, 0x321, 0x36a, 0xfff, 0x086,
-	0xfff, 0xfff, 0xfff, 0x43b, 0x088, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x26c, 0xfff, 0x2f8, 0x3b4, 0xfff, 0xfff, 0xfff,
-	0x132, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x333, 0x444,
-	0x0c1, 0x4d8, 0x46d, 0x264, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x426, 0xfff, 0xfff, 0xfff, 0xfff, 0x2fe, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x011, 0xfff, 0x05f, 0xfff, 0xfff, 0xfff,
-	0xfff, 0x10c, 0x101, 0xfff, 0xfff, 0xfff, 0xfff, 0x110,
-	0xfff, 0x044, 0x304, 0x361, 0x404, 0xfff, 0x51b, 0x099,
-	0xfff, 0x440, 0xfff, 0xfff, 0xfff, 0x222, 0xfff, 0xfff,
-	0xfff, 0xfff, 0x1b5, 0xfff, 0x136, 0x430, 0xfff, 0x1da,
-	0xfff, 0xfff, 0xfff, 0x043, 0xfff, 0x17c, 0xfff, 0xfff,
-	0xfff, 0x01c, 0xfff, 0xfff, 0xfff, 0x425, 0x236, 0xfff,
-	0x317, 0xfff, 0xfff, 0x437, 0x3fc, 0xfff, 0x1f1, 0xfff,
-	0x324, 0xfff, 0xfff, 0x0ca, 0x306, 0xfff, 0x548, 0xfff,
-	0x46e, 0xfff, 0xfff, 0xfff, 0x4b8, 0x1c2, 0x286, 0xfff,
-	0xfff, 0x087, 0x18a, 0x19f, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x18c, 0xfff, 0x215, 0xfff, 0xfff, 0xfff, 0xfff, 0x283,
-	0xfff, 0xfff, 0xfff, 0x126, 0xfff, 0xfff, 0x370, 0xfff,
-	0x53f, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0x31c, 0xfff,
-	0x4d1, 0xfff, 0xfff, 0xfff, 0x021, 0xfff, 0x157, 0xfff,
-	0xfff, 0x028, 0x16e, 0xfff, 0x421, 0xfff, 0x1c6, 0xfff,
-	0xfff, 0x511, 0xfff, 0xfff, 0x39c, 0x46f, 0x1b2, 0xfff,
-	0xfff, 0x316, 0xfff, 0xfff, 0x009, 0xfff, 0xfff, 0x195,
-	0xfff, 0x240, 0x546, 0xfff, 0xfff, 0x520, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x454, 0xfff, 0xfff, 0xfff,
-	0x3f3, 0xfff, 0xfff, 0x187, 0xfff, 0x4a9, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x51c, 0x453, 0x1e6, 0xfff,
-	0xfff, 0xfff, 0x1b0, 0xfff, 0x477, 0xfff, 0xfff, 0xfff,
-	0x4fe, 0xfff, 0x32f, 0xfff, 0xfff, 0x15e, 0x1d4, 0xfff,
-	0x0e5, 0xfff, 0xfff, 0xfff, 0x242, 0x14b, 0x046, 0xfff,
-	0x3f6, 0x3bb, 0x3e4, 0xfff, 0xfff, 0x2e3, 0xfff, 0x245,
-	0xfff, 0x149, 0xfff, 0xfff, 0xfff, 0x2db, 0xfff, 0xfff,
-	0x181, 0xfff, 0x089, 0x2c5, 0xfff, 0x1f5, 0xfff, 0x2d6,
-	0x507, 0xfff, 0x42d, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0x080, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-	0xfff, 0xfff, 0xfff, 0xfff, 0x3c3, 0x320, 0xfff, 0x1e1,
-	0xfff, 0x0f5, 0x13b, 0xfff, 0xfff, 0xfff, 0x003, 0x4da,
-	0xfff, 0xfff, 0xfff, 0x42c, 0xfff, 0xfff, 0x0cb, 0xfff,
-	0x536, 0x2c3, 0xfff, 0xfff, 0xfff, 0xfff, 0x199, 0xfff,
-	0xfff, 0x0c0, 0xfff, 0x01e, 0x497, 0xfff, 0xfff, 0x3e5,
-	0xfff, 0xfff, 0xfff, 0x0cf, 0xfff, 0x2bd, 0xfff, 0x223,
-	0xfff, 0x3ff, 0xfff, 0x058, 0x174, 0x3ef, 0xfff, 0x002
-};
-
-static unsigned short err_pos(unsigned short din)
-{
-	BUG_ON(din >= ARRAY_SIZE(err_pos_lut));
-	return err_pos_lut[din];
-}
-static int chk_no_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
-{
-	if ((chk_syndrome_list[0] | chk_syndrome_list[1] |
-	     chk_syndrome_list[2] | chk_syndrome_list[3] |
-	     chk_syndrome_list[4] | chk_syndrome_list[5] |
-	     chk_syndrome_list[6] | chk_syndrome_list[7]) != 0x0) {
-		return -EINVAL;
-	} else {
-		err_info[0] = 0x0;
-		return 0;
-	}
-}
-static int chk_1_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
-{
-	unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6;
-	tmp0 = gf4096_mul(chk_syndrome_list[1], gf4096_inv(chk_syndrome_list[0]));
-	tmp1 = gf4096_mul(chk_syndrome_list[2], gf4096_inv(chk_syndrome_list[1]));
-	tmp2 = gf4096_mul(chk_syndrome_list[3], gf4096_inv(chk_syndrome_list[2]));
-	tmp3 = gf4096_mul(chk_syndrome_list[4], gf4096_inv(chk_syndrome_list[3]));
-	tmp4 = gf4096_mul(chk_syndrome_list[5], gf4096_inv(chk_syndrome_list[4]));
-	tmp5 = gf4096_mul(chk_syndrome_list[6], gf4096_inv(chk_syndrome_list[5]));
-	tmp6 = gf4096_mul(chk_syndrome_list[7], gf4096_inv(chk_syndrome_list[6]));
-	if ((tmp0 == tmp1) & (tmp1 == tmp2) & (tmp2 == tmp3) & (tmp3 == tmp4) & (tmp4 == tmp5) & (tmp5 == tmp6)) {
-		err_info[0] = 0x1;	// encode 1-symbol error as 0x1
-		err_info[1] = err_pos(tmp0);
-		err_info[1] = (unsigned short)(0x55e - err_info[1]);
-		err_info[5] = chk_syndrome_list[0];
-		return 0;
-	} else
-		return -EINVAL;
-}
-static int chk_2_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
-{
-	unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
-	unsigned short coefs[4];
-	unsigned short err_pats[4];
-	int found_num_root = 0;
-	unsigned short bit2_root0, bit2_root1;
-	unsigned short bit2_root0_inv, bit2_root1_inv;
-	unsigned short err_loc_eqn, test_root;
-	unsigned short bit2_loc0, bit2_loc1;
-	unsigned short bit2_pat0, bit2_pat1;
-
-	find_2x2_soln(chk_syndrome_list[1],
-		      chk_syndrome_list[0],
-		      chk_syndrome_list[2], chk_syndrome_list[1], chk_syndrome_list[2], chk_syndrome_list[3], coefs);
-	for (test_root = 0x1; test_root < 0xfff; test_root++) {
-		err_loc_eqn =
-		    gf4096_mul(coefs[1], gf4096_mul(test_root, test_root)) ^ gf4096_mul(coefs[0], test_root) ^ 0x1;
-		if (err_loc_eqn == 0x0) {
-			if (found_num_root == 0) {
-				bit2_root0 = test_root;
-				found_num_root = 1;
-			} else if (found_num_root == 1) {
-				bit2_root1 = test_root;
-				found_num_root = 2;
-				break;
-			}
-		}
-	}
-	if (found_num_root != 2)
-		return -EINVAL;
-	else {
-		bit2_root0_inv = gf4096_inv(bit2_root0);
-		bit2_root1_inv = gf4096_inv(bit2_root1);
-		find_2bit_err_pats(chk_syndrome_list[0],
-				   chk_syndrome_list[1], bit2_root0_inv, bit2_root1_inv, err_pats);
-		bit2_pat0 = err_pats[0];
-		bit2_pat1 = err_pats[1];
-		//for(x+1)
-		tmp0 = gf4096_mul(gf4096_mul(bit2_root0_inv, bit2_root0_inv), gf4096_mul(bit2_root0_inv, bit2_root0_inv));	//rinv0^4
-		tmp1 = gf4096_mul(bit2_root0_inv, tmp0);	//rinv0^5
-		tmp2 = gf4096_mul(bit2_root0_inv, tmp1);	//rinv0^6
-		tmp3 = gf4096_mul(bit2_root0_inv, tmp2);	//rinv0^7
-		tmp4 = gf4096_mul(gf4096_mul(bit2_root1_inv, bit2_root1_inv), gf4096_mul(bit2_root1_inv, bit2_root1_inv));	//rinv1^4
-		tmp5 = gf4096_mul(bit2_root1_inv, tmp4);	//rinv1^5
-		tmp6 = gf4096_mul(bit2_root1_inv, tmp5);	//rinv1^6
-		tmp7 = gf4096_mul(bit2_root1_inv, tmp6);	//rinv1^7
-		//check if only 2-bit error
-		if ((chk_syndrome_list[4] ==
-		     (gf4096_mul(bit2_pat0, tmp0) ^
-		      gf4096_mul(bit2_pat1,
-				 tmp4))) & (chk_syndrome_list[5] ==
-					    (gf4096_mul(bit2_pat0, tmp1) ^
-					     gf4096_mul(bit2_pat1,
-							tmp5))) &
-		    (chk_syndrome_list[6] ==
-		     (gf4096_mul(bit2_pat0, tmp2) ^
-		      gf4096_mul(bit2_pat1,
-				 tmp6))) & (chk_syndrome_list[7] ==
-					    (gf4096_mul(bit2_pat0, tmp3) ^ gf4096_mul(bit2_pat1, tmp7)))) {
-			if ((err_pos(bit2_root0_inv) == 0xfff) | (err_pos(bit2_root1_inv) == 0xfff)) {
-				return -EINVAL;
-			} else {
-				bit2_loc0 = 0x55e - err_pos(bit2_root0_inv);
-				bit2_loc1 = 0x55e - err_pos(bit2_root1_inv);
-				err_info[0] = 0x2;	// encode 2-symbol error as 0x2
-				err_info[1] = bit2_loc0;
-				err_info[2] = bit2_loc1;
-				err_info[5] = bit2_pat0;
-				err_info[6] = bit2_pat1;
-				return 0;
-			}
-		} else
-			return -EINVAL;
-	}
-}
-static int chk_3_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
-{
-	unsigned short tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
-	unsigned short coefs[4];
-	unsigned short err_pats[4];
-	int found_num_root = 0;
-	unsigned short bit3_root0, bit3_root1, bit3_root2;
-	unsigned short bit3_root0_inv, bit3_root1_inv, bit3_root2_inv;
-	unsigned short err_loc_eqn, test_root;
-
-	find_3bit_err_coefs(chk_syndrome_list[0], chk_syndrome_list[1],
-			    chk_syndrome_list[2], chk_syndrome_list[3],
-			    chk_syndrome_list[4], chk_syndrome_list[5], coefs);
-
-	for (test_root = 0x1; test_root < 0xfff; test_root++) {
-		err_loc_eqn = gf4096_mul(coefs[2],
-					 gf4096_mul(gf4096_mul(test_root, test_root),
-						    test_root)) ^ gf4096_mul(coefs[1], gf4096_mul(test_root, test_root))
-			^ gf4096_mul(coefs[0], test_root) ^ 0x1;
-
-		if (err_loc_eqn == 0x0) {
-			if (found_num_root == 0) {
-				bit3_root0 = test_root;
-				found_num_root = 1;
-			} else if (found_num_root == 1) {
-				bit3_root1 = test_root;
-				found_num_root = 2;
-			} else if (found_num_root == 2) {
-				bit3_root2 = test_root;
-				found_num_root = 3;
-				break;
-			}
-		}
-	}
-	if (found_num_root != 3)
-		return -EINVAL;
-	else {
-		bit3_root0_inv = gf4096_inv(bit3_root0);
-		bit3_root1_inv = gf4096_inv(bit3_root1);
-		bit3_root2_inv = gf4096_inv(bit3_root2);
-
-		find_3bit_err_pats(chk_syndrome_list[0], chk_syndrome_list[1],
-				   chk_syndrome_list[2], bit3_root0_inv,
-				   bit3_root1_inv, bit3_root2_inv, err_pats);
-
-		//check if only 3-bit error
-		tmp0 = gf4096_mul(bit3_root0_inv, bit3_root0_inv);
-		tmp0 = gf4096_mul(tmp0, tmp0);
-		tmp0 = gf4096_mul(tmp0, bit3_root0_inv);
-		tmp0 = gf4096_mul(tmp0, bit3_root0_inv);	//rinv0^6
-		tmp1 = gf4096_mul(tmp0, bit3_root0_inv);	//rinv0^7
-		tmp2 = gf4096_mul(bit3_root1_inv, bit3_root1_inv);
-		tmp2 = gf4096_mul(tmp2, tmp2);
-		tmp2 = gf4096_mul(tmp2, bit3_root1_inv);
-		tmp2 = gf4096_mul(tmp2, bit3_root1_inv);	//rinv1^6
-		tmp3 = gf4096_mul(tmp2, bit3_root1_inv);	//rinv1^7
-		tmp4 = gf4096_mul(bit3_root2_inv, bit3_root2_inv);
-		tmp4 = gf4096_mul(tmp4, tmp4);
-		tmp4 = gf4096_mul(tmp4, bit3_root2_inv);
-		tmp4 = gf4096_mul(tmp4, bit3_root2_inv);	//rinv2^6
-		tmp5 = gf4096_mul(tmp4, bit3_root2_inv);	//rinv2^7
-
-		//check if only 3 errors
-		if ((chk_syndrome_list[6] == (gf4096_mul(err_pats[0], tmp0) ^
-					      gf4096_mul(err_pats[1], tmp2) ^
-					      gf4096_mul(err_pats[2], tmp4))) &
-		    (chk_syndrome_list[7] == (gf4096_mul(err_pats[0], tmp1) ^
-					      gf4096_mul(err_pats[1], tmp3) ^ gf4096_mul(err_pats[2], tmp5)))) {
-			if ((err_pos(bit3_root0_inv) == 0xfff) |
-			    (err_pos(bit3_root1_inv) == 0xfff) | (err_pos(bit3_root2_inv) == 0xfff)) {
-				return -EINVAL;
-			} else {
-				err_info[0] = 0x3;
-				err_info[1] = (0x55e - err_pos(bit3_root0_inv));
-				err_info[2] = (0x55e - err_pos(bit3_root1_inv));
-				err_info[3] = (0x55e - err_pos(bit3_root2_inv));
-				err_info[5] = err_pats[0];
-				err_info[6] = err_pats[1];
-				err_info[7] = err_pats[2];
-				return 0;
-			}
-		} else
-			return -EINVAL;
-	}
-}
-static int chk_4_err_only(unsigned short *chk_syndrome_list, unsigned short *err_info)
-{
-	unsigned short coefs[4];
-	unsigned short err_pats[4];
-	int found_num_root = 0;
-	unsigned short bit4_root0, bit4_root1, bit4_root2, bit4_root3;
-	unsigned short bit4_root0_inv, bit4_root1_inv, bit4_root2_inv, bit4_root3_inv;
-	unsigned short err_loc_eqn, test_root;
-
-	find_4bit_err_coefs(chk_syndrome_list[0],
-			    chk_syndrome_list[1],
-			    chk_syndrome_list[2],
-			    chk_syndrome_list[3],
-			    chk_syndrome_list[4],
-			    chk_syndrome_list[5], chk_syndrome_list[6], chk_syndrome_list[7], coefs);
-
-	for (test_root = 0x1; test_root < 0xfff; test_root++) {
-		err_loc_eqn =
-		    gf4096_mul(coefs[3],
-			       gf4096_mul(gf4096_mul
-					  (gf4096_mul(test_root, test_root),
-					   test_root),
-					  test_root)) ^ gf4096_mul(coefs[2],
-								   gf4096_mul
-								   (gf4096_mul(test_root, test_root), test_root))
-		    ^ gf4096_mul(coefs[1], gf4096_mul(test_root, test_root)) ^ gf4096_mul(coefs[0], test_root)
-		    ^ 0x1;
-		if (err_loc_eqn == 0x0) {
-			if (found_num_root == 0) {
-				bit4_root0 = test_root;
-				found_num_root = 1;
-			} else if (found_num_root == 1) {
-				bit4_root1 = test_root;
-				found_num_root = 2;
-			} else if (found_num_root == 2) {
-				bit4_root2 = test_root;
-				found_num_root = 3;
-			} else {
-				found_num_root = 4;
-				bit4_root3 = test_root;
-				break;
-			}
-		}
-	}
-	if (found_num_root != 4) {
-		return -EINVAL;
-	} else {
-		bit4_root0_inv = gf4096_inv(bit4_root0);
-		bit4_root1_inv = gf4096_inv(bit4_root1);
-		bit4_root2_inv = gf4096_inv(bit4_root2);
-		bit4_root3_inv = gf4096_inv(bit4_root3);
-		find_4bit_err_pats(chk_syndrome_list[0],
-				   chk_syndrome_list[1],
-				   chk_syndrome_list[2],
-				   chk_syndrome_list[3],
-				   bit4_root0_inv, bit4_root1_inv, bit4_root2_inv, bit4_root3_inv, err_pats);
-		err_info[0] = 0x4;
-		err_info[1] = (0x55e - err_pos(bit4_root0_inv));
-		err_info[2] = (0x55e - err_pos(bit4_root1_inv));
-		err_info[3] = (0x55e - err_pos(bit4_root2_inv));
-		err_info[4] = (0x55e - err_pos(bit4_root3_inv));
-		err_info[5] = err_pats[0];
-		err_info[6] = err_pats[1];
-		err_info[7] = err_pats[2];
-		err_info[8] = err_pats[3];
-		return 0;
-	}
-}
-
-void correct_12bit_symbol(unsigned char *buf, unsigned short sym,
-			  unsigned short val)
-{
-	if (unlikely(sym > 1366)) {
-		printk(KERN_ERR "Error: symbol %d out of range; cannot correct\n", sym);
-	} else if (sym == 0) {
-		buf[0] ^= val;
-	} else if (sym & 1) {
-		buf[1+(3*(sym-1))/2] ^= (val >> 4);
-		buf[2+(3*(sym-1))/2] ^= ((val & 0xf) << 4);
-	} else {
-		buf[2+(3*(sym-2))/2] ^= (val >> 8);
-		buf[3+(3*(sym-2))/2] ^= (val & 0xff);
-	}
-}
-
-static int debugecc = 0;
-module_param(debugecc, int, 0644);
-
-int cafe_correct_ecc(unsigned char *buf,
-		     unsigned short *chk_syndrome_list)
-{
-	unsigned short err_info[9];
-	int i;
-
-	if (debugecc) {
-		printk(KERN_WARNING "cafe_correct_ecc invoked. Syndromes %x %x %x %x %x %x %x %x\n",
-		       chk_syndrome_list[0], chk_syndrome_list[1],
-		       chk_syndrome_list[2], chk_syndrome_list[3],
-		       chk_syndrome_list[4], chk_syndrome_list[5],
-		       chk_syndrome_list[6], chk_syndrome_list[7]);
-		for (i=0; i < 2048; i+=16) {
-			printk(KERN_WARNING "D %04x: %02x %02x %02x %02x %02x %02x %02x %02x  %02x %02x %02x %02x %02x %02x %02x %02x\n",
-			       i,
-			       buf[i], buf[i+1], buf[i+2], buf[i+3],
-			       buf[i+4], buf[i+5], buf[i+6], buf[i+7],
-			       buf[i+8], buf[i+9], buf[i+10], buf[i+11],
-			       buf[i+12], buf[i+13], buf[i+14], buf[i+15]);
-		}
-		for ( ; i < 2112; i+=16) {
-			printk(KERN_WARNING "O   %02x: %02x %02x %02x %02x %02x %02x %02x %02x  %02x %02x %02x %02x %02x %02x %02x %02x\n",
-			       i - 2048,
-			       buf[i], buf[i+1], buf[i+2], buf[i+3],
-			       buf[i+4], buf[i+5], buf[i+6], buf[i+7],
-			       buf[i+8], buf[i+9], buf[i+10], buf[i+11],
-			       buf[i+12], buf[i+13], buf[i+14], buf[i+15]);
-		}
-	}
-
-
-
-	if (chk_no_err_only(chk_syndrome_list, err_info) &&
-	    chk_1_err_only(chk_syndrome_list, err_info) &&
-	    chk_2_err_only(chk_syndrome_list, err_info) &&
-	    chk_3_err_only(chk_syndrome_list, err_info) &&
-	    chk_4_err_only(chk_syndrome_list, err_info)) {
-		return -EIO;
-	}
-
-	for (i=0; i < err_info[0]; i++) {
-		if (debugecc)
-			printk(KERN_WARNING "Correct symbol %d with 0x%03x\n",
-			       err_info[1+i], err_info[5+i]);
-
-		correct_12bit_symbol(buf, err_info[1+i], err_info[5+i]);
-	}
-
-	return err_info[0];
-}
-