Merge branch 'master'

1 files changed, 32 insertions, 32 deletions

diff --git a/lib/reed_solomon/reed_solomon.c b/lib/reed_solomon/reed_solomon.c
index 6604e3b1940c..f5fef948a415 100644
--- a/lib/reed_solomon/reed_solomon.c
+++ b/lib/reed_solomon/reed_solomon.c
@@ -1,22 +1,22 @@
-/* 
+/*
  * lib/reed_solomon/rslib.c
  *
  * Overview:
  *   Generic Reed Solomon encoder / decoder library
- *   
+ *
  * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de)
  *
  * Reed Solomon code lifted from reed solomon library written by Phil Karn
  * Copyright 2002 Phil Karn, KA9Q
  *
- * $Id: rslib.c,v 1.5 2004/10/22 15:41:47 gleixner Exp $
+ * $Id: rslib.c,v 1.7 2005/11/07 11:14:59 gleixner Exp $
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * Description:
- *      
+ *
  * The generic Reed Solomon library provides runtime configurable
  * encoding / decoding of RS codes.
  * Each user must call init_rs to get a pointer to a rs_control
@@ -25,11 +25,11 @@
  * If a structure is generated then the polynomial arrays for
  * fast encoding / decoding are built. This can take some time so
  * make sure not to call this function from a time critical path.
- * Usually a module / driver should initialize the necessary 
+ * Usually a module / driver should initialize the necessary
  * rs_control structure on module / driver init and release it
  * on exit.
- * The encoding puts the calculated syndrome into a given syndrome 
- * buffer. 
+ * The encoding puts the calculated syndrome into a given syndrome
+ * buffer.
  * The decoding is a two step process. The first step calculates
  * the syndrome over the received (data + syndrome) and calls the
  * second stage, which does the decoding / error correction itself.
@@ -51,7 +51,7 @@ static LIST_HEAD (rslist);
 /* Protection for the list */
 static DECLARE_MUTEX(rslistlock);
 
-/** 
+/**
  * rs_init - Initialize a Reed-Solomon codec
  *
  * @symsize:    symbol size, bits (1-8)
@@ -63,7 +63,7 @@ static DECLARE_MUTEX(rslistlock);
  * Allocate a control structure and the polynom arrays for faster
  * en/decoding. Fill the arrays according to the given parameters
  */
-static struct rs_control *rs_init(int symsize, int gfpoly, int fcr, 
+static struct rs_control *rs_init(int symsize, int gfpoly, int fcr,
                                    int prim, int nroots)
 {
         struct rs_control *rs;
@@ -124,15 +124,15 @@ static struct rs_control *rs_init(int symsize, int gfpoly, int fcr,
                 /* Multiply rs->genpoly[] by  @**(root + x) */
                 for (j = i; j > 0; j--) {
                         if (rs->genpoly[j] != 0) {
-                                rs->genpoly[j] = rs->genpoly[j -1] ^ 
-                                        rs->alpha_to[rs_modnn(rs, 
+                                rs->genpoly[j] = rs->genpoly[j -1] ^
+                                        rs->alpha_to[rs_modnn(rs,
                                         rs->index_of[rs->genpoly[j]] + root)];
                         } else
                                 rs->genpoly[j] = rs->genpoly[j - 1];
                 }
                 /* rs->genpoly[0] can never be zero */
-                rs->genpoly[0] = 
-                        rs->alpha_to[rs_modnn(rs, 
+                rs->genpoly[0] =
+                        rs->alpha_to[rs_modnn(rs,
                                 rs->index_of[rs->genpoly[0]] + root)];
         }
         /* convert rs->genpoly[] to index form for quicker encoding */
@@ -153,7 +153,7 @@ errrs:
 }
 
 
-/** 
+/**
  *  free_rs - Free the rs control structure, if its not longer used
  *
  *  @rs:        the control structure which is not longer used by the
@@ -173,19 +173,19 @@ void free_rs(struct rs_control *rs)
         up(&rslistlock);
 }
 
-/** 
+/**
  * init_rs - Find a matching or allocate a new rs control structure
  *
  *  @symsize:   the symbol size (number of bits)
  *  @gfpoly:    the extended Galois field generator polynomial coefficients,
  *              with the 0th coefficient in the low order bit. The polynomial
  *              must be primitive;
- *  @fcr:       the first consecutive root of the rs code generator polynomial 
+ *  @fcr:       the first consecutive root of the rs code generator polynomial
  *              in index form
  *  @prim:      primitive element to generate polynomial roots
  *  @nroots:    RS code generator polynomial degree (number of roots)
  */
-struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim, 
+struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim,
                            int nroots)
 {
         struct list_head        *tmp;
@@ -198,9 +198,9 @@ struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim,
                 return NULL;
         if (prim <= 0 || prim >= (1<<symsize))
                 return NULL;
-        if (nroots < 0 || nroots >= (1<<symsize) || nroots > 8)
+        if (nroots < 0 || nroots >= (1<<symsize))
                 return NULL;
-        
+
         down(&rslistlock);
 
         /* Walk through the list and look for a matching entry */
@@ -211,9 +211,9 @@ struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim,
                 if (gfpoly != rs->gfpoly)
                         continue;
                 if (fcr != rs->fcr)
-                        continue;       
+                        continue;
                 if (prim != rs->prim)
-                        continue;       
+                        continue;
                 if (nroots != rs->nroots)
                         continue;
                 /* We have a matching one already */
@@ -227,18 +227,18 @@ struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim,
                 rs->users = 1;
                 list_add(&rs->list, &rslist);
         }
-out:    
+out:
         up(&rslistlock);
         return rs;
 }
 
 #ifdef CONFIG_REED_SOLOMON_ENC8
-/** 
+/**
  *  encode_rs8 - Calculate the parity for data values (8bit data width)
  *
  *  @rs:        the rs control structure
  *  @data:      data field of a given type
- *  @len:       data length 
+ *  @len:       data length
  *  @par:       parity data, must be initialized by caller (usually all 0)
  *  @invmsk:    invert data mask (will be xored on data)
  *
@@ -246,7 +246,7 @@ out:
  *  symbol size > 8. The calling code must take care of encoding of the
  *  syndrome result for storage itself.
  */
-int encode_rs8(struct rs_control *rs, uint8_t *data, int len, uint16_t *par, 
+int encode_rs8(struct rs_control *rs, uint8_t *data, int len, uint16_t *par,
                uint16_t invmsk)
 {
 #include "encode_rs.c"
@@ -255,7 +255,7 @@ EXPORT_SYMBOL_GPL(encode_rs8);
 #endif
 
 #ifdef CONFIG_REED_SOLOMON_DEC8
-/** 
+/**
  *  decode_rs8 - Decode codeword (8bit data width)
  *
  *  @rs:        the rs control structure
@@ -273,7 +273,7 @@ EXPORT_SYMBOL_GPL(encode_rs8);
  *  syndrome result and the received parity before calling this code.
  */
 int decode_rs8(struct rs_control *rs, uint8_t *data, uint16_t *par, int len,
-               uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk, 
+               uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
                uint16_t *corr)
 {
 #include "decode_rs.c"
@@ -287,13 +287,13 @@ EXPORT_SYMBOL_GPL(decode_rs8);
  *
  *  @rs:        the rs control structure
  *  @data:      data field of a given type
- *  @len:       data length 
+ *  @len:       data length
  *  @par:       parity data, must be initialized by caller (usually all 0)
  *  @invmsk:    invert data mask (will be xored on data, not on parity!)
  *
  *  Each field in the data array contains up to symbol size bits of valid data.
  */
-int encode_rs16(struct rs_control *rs, uint16_t *data, int len, uint16_t *par, 
+int encode_rs16(struct rs_control *rs, uint16_t *data, int len, uint16_t *par,
         uint16_t invmsk)
 {
 #include "encode_rs.c"
@@ -302,7 +302,7 @@ EXPORT_SYMBOL_GPL(encode_rs16);
 #endif
 
 #ifdef CONFIG_REED_SOLOMON_DEC16
-/** 
+/**
  *  decode_rs16 - Decode codeword (16bit data width)
  *
  *  @rs:        the rs control structure
@@ -312,13 +312,13 @@ EXPORT_SYMBOL_GPL(encode_rs16);
  *  @s:         syndrome data field (if NULL, syndrome is calculated)
  *  @no_eras:   number of erasures
  *  @eras_pos:  position of erasures, can be NULL
- *  @invmsk:    invert data mask (will be xored on data, not on parity!) 
+ *  @invmsk:    invert data mask (will be xored on data, not on parity!)
  *  @corr:      buffer to store correction bitmask on eras_pos
  *
  *  Each field in the data array contains up to symbol size bits of valid data.
  */
 int decode_rs16(struct rs_control *rs, uint16_t *data, uint16_t *par, int len,
-                uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk, 
+                uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
                 uint16_t *corr)
 {
 #include "decode_rs.c"