[MTD] [NAND] Minor cleanup of nand_ecc.c

 *

 * drivers/mtd/nand/nand_ecc.c

 *

 * Copyright (C) 2008 Koninklijke Philips Electronics NV.

 * Copyright © 2008 Koninklijke Philips Electronics NV.

 *                  Author: Frans Meulenbroeks

 *

 * Completely replaces the previous ECC implementation which was written by:

 *   Thomas Gleixner (tglx@linutronix.de)

 *

 * Information on how this algorithm works and how it was developed

 * can be found in Documentation/nand/ecc.txt

 * can be found in Documentation/mtd/nand_ecc.txt

 *

 * This file is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * e.g. when running the code in a testbed or a benchmark program.

 * When STANDALONE is used, the module related macros are commented out

 * as well as the linux include files.

 * Instead a private definition of mtd_into is given to satisfy the compiler

 * Instead a private definition of mtd_info is given to satisfy the compiler

 * (the code does not use mtd_info, so the code does not care)

 */

#ifndef STANDALONE

#include <linux/module.h>

#include <linux/mtd/nand_ecc.h>

#else

typedef uint32_t unsigned long

struct mtd_info {

	int dummy;

};

#include <stdint.h>

struct mtd_info;

#define EXPORT_SYMBOL(x)  /* x */

#define MODULE_LICENSE(x)	/* x */

	/* repeated if statements are slightly more efficient than switch ... */

	/* ordered in order of likelihood */

	if (nr_bits == 0)

		return (0);	/* no error */

		return 0;	/* no error */

	if (nr_bits == 11) {	/* correctable error */

		/*

		 * rp15/13/11/9/7/5/3/1 indicate which byte is the faulty byte

		bit_addr = addressbits[b2 >> 2];

		/* flip the bit */

		buf[byte_addr] ^= (1 << bit_addr);

		return (1);

		return 1;

	}

	if (nr_bits == 1)

		return (1);	/* error in ecc data; no action needed */

		return 1;	/* error in ecc data; no action needed */

	return -1;

}

EXPORT_SYMBOL(nand_correct_data);