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

Make the standalone stuff a little cleaner, fix some checkpatch warnings.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2008-08-16 11:01:31 +01:00
parent e6cf5df183
commit ccbcd6cba5
1 changed files with 9 additions and 11 deletions
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20
drivers/mtd/nand/nand_ecc.c
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@ -4,15 +4,15 @@
* *
* drivers/mtd/nand/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 * Author: Frans Meulenbroeks
* *
* Completely replaces the previous ECC implementation which was written by: * Completely replaces the previous ECC implementation which was written by:
* Steven J. Hill (sjhill@realitydiluted.com) * Steven J. Hill (sjhill@realitydiluted.com)
* Thomas Gleixner (tglx@linutronix.de) * Thomas Gleixner (tglx@linutronix.de)
* *
* Information on how this algorithm works and how it was developed * 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 * 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 * under the terms of the GNU General Public License as published by the
@ -35,7 +35,7 @@
* e.g. when running the code in a testbed or a benchmark program. * e.g. when running the code in a testbed or a benchmark program.
* When STANDALONE is used, the module related macros are commented out * When STANDALONE is used, the module related macros are commented out
* as well as the linux include files. * 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) * (the code does not use mtd_info, so the code does not care)
*/ */
#ifndef STANDALONE #ifndef STANDALONE
@ -44,10 +44,8 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/mtd/nand_ecc.h> #include <linux/mtd/nand_ecc.h>
#else #else
typedef uint32_t unsigned long #include <stdint.h>
struct mtd_info { struct mtd_info;
int dummy;
};
#define EXPORT_SYMBOL(x) /* x */ #define EXPORT_SYMBOL(x) /* x */
#define MODULE_LICENSE(x) /* x */ #define MODULE_LICENSE(x) /* x */
@ -409,7 +407,7 @@ int nand_correct_data(struct mtd_info *mtd, unsigned char *buf,
/* repeated if statements are slightly more efficient than switch ... */ /* repeated if statements are slightly more efficient than switch ... */
/* ordered in order of likelihood */ /* ordered in order of likelihood */
if (nr_bits == 0) if (nr_bits == 0)
return (0); /* no error */ return 0; /* no error */
if (nr_bits == 11) { /* correctable error */ if (nr_bits == 11) { /* correctable error */
/* /*
* rp15/13/11/9/7/5/3/1 indicate which byte is the faulty byte * rp15/13/11/9/7/5/3/1 indicate which byte is the faulty byte
@ -431,10 +429,10 @@ int nand_correct_data(struct mtd_info *mtd, unsigned char *buf,
bit_addr = addressbits[b2 >> 2]; bit_addr = addressbits[b2 >> 2];
/* flip the bit */ /* flip the bit */
buf[byte_addr] ^= (1 << bit_addr); buf[byte_addr] ^= (1 << bit_addr);
return (1); return 1;
} }
if (nr_bits == 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; return -1;
} }
EXPORT_SYMBOL(nand_correct_data); EXPORT_SYMBOL(nand_correct_data);