diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2005-11-07 06:15:40 -0500 |
---|---|---|
committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-07 09:06:59 -0500 |
commit | e5580fbe8a950131b9ccccce0f962811dfb9ef43 (patch) | |
tree | d7558eea2208a7b8fbc83c9a94f588b67aa5a3cc /drivers/mtd/devices/docecc.c | |
parent | 69f34c98c1416eb74c55e38a21dbf3e294966514 (diff) |
[MTD] devices: Clean up trailing white spaces
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd/devices/docecc.c')
-rw-r--r-- | drivers/mtd/devices/docecc.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/drivers/mtd/devices/docecc.c b/drivers/mtd/devices/docecc.c index 24f670b5a4f3..cd3db72bef96 100644 --- a/drivers/mtd/devices/docecc.c +++ b/drivers/mtd/devices/docecc.c | |||
@@ -4,10 +4,10 @@ | |||
4 | * GNU GPL License. The rest is simply to convert the disk on chip | 4 | * GNU GPL License. The rest is simply to convert the disk on chip |
5 | * syndrom into a standard syndom. | 5 | * syndrom into a standard syndom. |
6 | * | 6 | * |
7 | * Author: Fabrice Bellard (fabrice.bellard@netgem.com) | 7 | * Author: Fabrice Bellard (fabrice.bellard@netgem.com) |
8 | * Copyright (C) 2000 Netgem S.A. | 8 | * Copyright (C) 2000 Netgem S.A. |
9 | * | 9 | * |
10 | * $Id: docecc.c,v 1.5 2003/05/21 15:15:06 dwmw2 Exp $ | 10 | * $Id: docecc.c,v 1.7 2005/11/07 11:14:25 gleixner Exp $ |
11 | * | 11 | * |
12 | * This program is free software; you can redistribute it and/or modify | 12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License as published by | 13 | * it under the terms of the GNU General Public License as published by |
@@ -122,7 +122,7 @@ for(ci=(n)-1;ci >=0;ci--)\ | |||
122 | a(0) + a(1) @ + a(2) @^2 + ... + a(m-1) @^(m-1) | 122 | a(0) + a(1) @ + a(2) @^2 + ... + a(m-1) @^(m-1) |
123 | we consider the integer "i" whose binary representation with a(0) being LSB | 123 | we consider the integer "i" whose binary representation with a(0) being LSB |
124 | and a(m-1) MSB is (a(0),a(1),...,a(m-1)) and locate the entry | 124 | and a(m-1) MSB is (a(0),a(1),...,a(m-1)) and locate the entry |
125 | "index_of[i]". Now, @^index_of[i] is that element whose polynomial | 125 | "index_of[i]". Now, @^index_of[i] is that element whose polynomial |
126 | representation is (a(0),a(1),a(2),...,a(m-1)). | 126 | representation is (a(0),a(1),a(2),...,a(m-1)). |
127 | NOTE: | 127 | NOTE: |
128 | The element alpha_to[2^m-1] = 0 always signifying that the | 128 | The element alpha_to[2^m-1] = 0 always signifying that the |
@@ -130,7 +130,7 @@ for(ci=(n)-1;ci >=0;ci--)\ | |||
130 | Similarily, the element index_of[0] = A0 always signifying | 130 | Similarily, the element index_of[0] = A0 always signifying |
131 | that the power of alpha which has the polynomial representation | 131 | that the power of alpha which has the polynomial representation |
132 | (0,0,...,0) is "infinity". | 132 | (0,0,...,0) is "infinity". |
133 | 133 | ||
134 | */ | 134 | */ |
135 | 135 | ||
136 | static void | 136 | static void |
@@ -176,7 +176,7 @@ generate_gf(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1]) | |||
176 | * are written back. NOTE! This array must be at least NN-KK elements long. | 176 | * are written back. NOTE! This array must be at least NN-KK elements long. |
177 | * The corrected data are written in eras_val[]. They must be xor with the data | 177 | * The corrected data are written in eras_val[]. They must be xor with the data |
178 | * to retrieve the correct data : data[erase_pos[i]] ^= erase_val[i] . | 178 | * to retrieve the correct data : data[erase_pos[i]] ^= erase_val[i] . |
179 | * | 179 | * |
180 | * First "no_eras" erasures are declared by the calling program. Then, the | 180 | * First "no_eras" erasures are declared by the calling program. Then, the |
181 | * maximum # of errors correctable is t_after_eras = floor((NN-KK-no_eras)/2). | 181 | * maximum # of errors correctable is t_after_eras = floor((NN-KK-no_eras)/2). |
182 | * If the number of channel errors is not greater than "t_after_eras" the | 182 | * If the number of channel errors is not greater than "t_after_eras" the |
@@ -189,7 +189,7 @@ generate_gf(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1]) | |||
189 | * */ | 189 | * */ |
190 | static int | 190 | static int |
191 | eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | 191 | eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], |
192 | gf bb[NN - KK + 1], gf eras_val[NN-KK], int eras_pos[NN-KK], | 192 | gf bb[NN - KK + 1], gf eras_val[NN-KK], int eras_pos[NN-KK], |
193 | int no_eras) | 193 | int no_eras) |
194 | { | 194 | { |
195 | int deg_lambda, el, deg_omega; | 195 | int deg_lambda, el, deg_omega; |
@@ -212,7 +212,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
212 | count = 0; | 212 | count = 0; |
213 | goto finish; | 213 | goto finish; |
214 | } | 214 | } |
215 | 215 | ||
216 | for(i=1;i<=NN-KK;i++){ | 216 | for(i=1;i<=NN-KK;i++){ |
217 | s[i] = bb[0]; | 217 | s[i] = bb[0]; |
218 | } | 218 | } |
@@ -220,7 +220,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
220 | if(bb[j] == 0) | 220 | if(bb[j] == 0) |
221 | continue; | 221 | continue; |
222 | tmp = Index_of[bb[j]]; | 222 | tmp = Index_of[bb[j]]; |
223 | 223 | ||
224 | for(i=1;i<=NN-KK;i++) | 224 | for(i=1;i<=NN-KK;i++) |
225 | s[i] ^= Alpha_to[modnn(tmp + (B0+i-1)*PRIM*j)]; | 225 | s[i] ^= Alpha_to[modnn(tmp + (B0+i-1)*PRIM*j)]; |
226 | } | 226 | } |
@@ -234,7 +234,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
234 | tmp = modnn(tmp + 2 * KK * (B0+i-1)*PRIM); | 234 | tmp = modnn(tmp + 2 * KK * (B0+i-1)*PRIM); |
235 | s[i] = tmp; | 235 | s[i] = tmp; |
236 | } | 236 | } |
237 | 237 | ||
238 | CLEAR(&lambda[1],NN-KK); | 238 | CLEAR(&lambda[1],NN-KK); |
239 | lambda[0] = 1; | 239 | lambda[0] = 1; |
240 | 240 | ||
@@ -252,7 +252,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
252 | #if DEBUG_ECC >= 1 | 252 | #if DEBUG_ECC >= 1 |
253 | /* Test code that verifies the erasure locator polynomial just constructed | 253 | /* Test code that verifies the erasure locator polynomial just constructed |
254 | Needed only for decoder debugging. */ | 254 | Needed only for decoder debugging. */ |
255 | 255 | ||
256 | /* find roots of the erasure location polynomial */ | 256 | /* find roots of the erasure location polynomial */ |
257 | for(i=1;i<=no_eras;i++) | 257 | for(i=1;i<=no_eras;i++) |
258 | reg[i] = Index_of[lambda[i]]; | 258 | reg[i] = Index_of[lambda[i]]; |
@@ -286,7 +286,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
286 | } | 286 | } |
287 | for(i=0;i<NN-KK+1;i++) | 287 | for(i=0;i<NN-KK+1;i++) |
288 | b[i] = Index_of[lambda[i]]; | 288 | b[i] = Index_of[lambda[i]]; |
289 | 289 | ||
290 | /* | 290 | /* |
291 | * Begin Berlekamp-Massey algorithm to determine error+erasure | 291 | * Begin Berlekamp-Massey algorithm to determine error+erasure |
292 | * locator polynomial | 292 | * locator polynomial |
@@ -389,7 +389,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
389 | omega[i] = Index_of[tmp]; | 389 | omega[i] = Index_of[tmp]; |
390 | } | 390 | } |
391 | omega[NN-KK] = A0; | 391 | omega[NN-KK] = A0; |
392 | 392 | ||
393 | /* | 393 | /* |
394 | * Compute error values in poly-form. num1 = omega(inv(X(l))), num2 = | 394 | * Compute error values in poly-form. num1 = omega(inv(X(l))), num2 = |
395 | * inv(X(l))**(B0-1) and den = lambda_pr(inv(X(l))) all in poly-form | 395 | * inv(X(l))**(B0-1) and den = lambda_pr(inv(X(l))) all in poly-form |
@@ -402,7 +402,7 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
402 | } | 402 | } |
403 | num2 = Alpha_to[modnn(root[j] * (B0 - 1) + NN)]; | 403 | num2 = Alpha_to[modnn(root[j] * (B0 - 1) + NN)]; |
404 | den = 0; | 404 | den = 0; |
405 | 405 | ||
406 | /* lambda[i+1] for i even is the formal derivative lambda_pr of lambda[i] */ | 406 | /* lambda[i+1] for i even is the formal derivative lambda_pr of lambda[i] */ |
407 | for (i = min(deg_lambda,NN-KK-1) & ~1; i >= 0; i -=2) { | 407 | for (i = min(deg_lambda,NN-KK-1) & ~1; i >= 0; i -=2) { |
408 | if(lambda[i+1] != A0) | 408 | if(lambda[i+1] != A0) |
@@ -436,11 +436,11 @@ eras_dec_rs(dtype Alpha_to[NN + 1], dtype Index_of[NN + 1], | |||
436 | /* The sector bytes are packed into NB_DATA MM bits words */ | 436 | /* The sector bytes are packed into NB_DATA MM bits words */ |
437 | #define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / MM) | 437 | #define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / MM) |
438 | 438 | ||
439 | /* | 439 | /* |
440 | * Correct the errors in 'sector[]' by using 'ecc1[]' which is the | 440 | * Correct the errors in 'sector[]' by using 'ecc1[]' which is the |
441 | * content of the feedback shift register applyied to the sector and | 441 | * content of the feedback shift register applyied to the sector and |
442 | * the ECC. Return the number of errors corrected (and correct them in | 442 | * the ECC. Return the number of errors corrected (and correct them in |
443 | * sector), or -1 if error | 443 | * sector), or -1 if error |
444 | */ | 444 | */ |
445 | int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | 445 | int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) |
446 | { | 446 | { |
@@ -454,7 +454,7 @@ int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | |||
454 | Alpha_to = kmalloc((NN + 1) * sizeof(dtype), GFP_KERNEL); | 454 | Alpha_to = kmalloc((NN + 1) * sizeof(dtype), GFP_KERNEL); |
455 | if (!Alpha_to) | 455 | if (!Alpha_to) |
456 | return -1; | 456 | return -1; |
457 | 457 | ||
458 | Index_of = kmalloc((NN + 1) * sizeof(dtype), GFP_KERNEL); | 458 | Index_of = kmalloc((NN + 1) * sizeof(dtype), GFP_KERNEL); |
459 | if (!Index_of) { | 459 | if (!Index_of) { |
460 | kfree(Alpha_to); | 460 | kfree(Alpha_to); |
@@ -470,7 +470,7 @@ int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | |||
470 | bb[2] = ((ecc1[2] & 0xf0) >> 4) | ((ecc1[3] & 0x3f) << 4); | 470 | bb[2] = ((ecc1[2] & 0xf0) >> 4) | ((ecc1[3] & 0x3f) << 4); |
471 | bb[3] = ((ecc1[3] & 0xc0) >> 6) | ((ecc1[0] & 0xff) << 2); | 471 | bb[3] = ((ecc1[3] & 0xc0) >> 6) | ((ecc1[0] & 0xff) << 2); |
472 | 472 | ||
473 | nb_errors = eras_dec_rs(Alpha_to, Index_of, bb, | 473 | nb_errors = eras_dec_rs(Alpha_to, Index_of, bb, |
474 | error_val, error_pos, 0); | 474 | error_val, error_pos, 0); |
475 | if (nb_errors <= 0) | 475 | if (nb_errors <= 0) |
476 | goto the_end; | 476 | goto the_end; |
@@ -489,7 +489,7 @@ int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | |||
489 | can be modified since pos is even */ | 489 | can be modified since pos is even */ |
490 | index = (pos >> 3) ^ 1; | 490 | index = (pos >> 3) ^ 1; |
491 | bitpos = pos & 7; | 491 | bitpos = pos & 7; |
492 | if ((index >= 0 && index < SECTOR_SIZE) || | 492 | if ((index >= 0 && index < SECTOR_SIZE) || |
493 | index == (SECTOR_SIZE + 1)) { | 493 | index == (SECTOR_SIZE + 1)) { |
494 | val = error_val[i] >> (2 + bitpos); | 494 | val = error_val[i] >> (2 + bitpos); |
495 | parity ^= val; | 495 | parity ^= val; |
@@ -500,7 +500,7 @@ int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | |||
500 | bitpos = (bitpos + 10) & 7; | 500 | bitpos = (bitpos + 10) & 7; |
501 | if (bitpos == 0) | 501 | if (bitpos == 0) |
502 | bitpos = 8; | 502 | bitpos = 8; |
503 | if ((index >= 0 && index < SECTOR_SIZE) || | 503 | if ((index >= 0 && index < SECTOR_SIZE) || |
504 | index == (SECTOR_SIZE + 1)) { | 504 | index == (SECTOR_SIZE + 1)) { |
505 | val = error_val[i] << (8 - bitpos); | 505 | val = error_val[i] << (8 - bitpos); |
506 | parity ^= val; | 506 | parity ^= val; |
@@ -509,7 +509,7 @@ int doc_decode_ecc(unsigned char sector[SECTOR_SIZE], unsigned char ecc1[6]) | |||
509 | } | 509 | } |
510 | } | 510 | } |
511 | } | 511 | } |
512 | 512 | ||
513 | /* use parity to test extra errors */ | 513 | /* use parity to test extra errors */ |
514 | if ((parity & 0xff) != 0) | 514 | if ((parity & 0xff) != 0) |
515 | nb_errors = -1; | 515 | nb_errors = -1; |