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Source at commit 1c406da created 12 years 7 months ago. By Xiangfu Liu, ben nanonote: forward patches to linux-3.0 | |
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1 | From 5fa159fe903240a78136ba90bfefc91d899fcfe3 Mon Sep 17 00:00:00 2001 |
2 | From: Xiangfu Liu <xiangfu@macbook.(none)> |
3 | Date: Fri, 19 Aug 2011 15:46:14 +0800 |
4 | Subject: [PATCH 21/29] 904-NAND-Optimize-reading-the-eec-data-for-the-JZ4740-ev.patch |
5 | |
6 | --- |
7 | drivers/mtd/nand/nand_base.c | 14 ++++---------- |
8 | 1 files changed, 4 insertions(+), 10 deletions(-) |
9 | |
10 | diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c |
11 | index f1214af..37c0cfb 100644 |
12 | --- a/drivers/mtd/nand/nand_base.c |
13 | +++ b/drivers/mtd/nand/nand_base.c |
14 | @@ -1306,8 +1306,8 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, |
15 | |
16 | /* Read the OOB area first */ |
17 | if (mtd->writesize > 512) { |
18 | - chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); |
19 | - chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); |
20 | + chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page); |
21 | + chip->read_buf(mtd, ecc_code, chip->ecc.total); |
22 | chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1); |
23 | } else { |
24 | chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); |
25 | @@ -1315,9 +1315,6 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, |
26 | chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); |
27 | } |
28 | |
29 | - for (i = 0; i < chip->ecc.total; i++) |
30 | - ecc_code[i] = chip->oob_poi[eccpos[i]]; |
31 | - |
32 | for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { |
33 | int stat; |
34 | |
35 | @@ -1372,8 +1369,8 @@ static int nand_read_subpage_hwecc_oob_first(struct mtd_info *mtd, struct nand_c |
36 | |
37 | /* Read the OOB area first */ |
38 | if (mtd->writesize > 512) { |
39 | - chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); |
40 | - chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); |
41 | + chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page); |
42 | + chip->read_buf(mtd, ecc_code, chip->ecc.total); |
43 | chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1); |
44 | } else { |
45 | chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); |
46 | @@ -1381,9 +1378,6 @@ static int nand_read_subpage_hwecc_oob_first(struct mtd_info *mtd, struct nand_c |
47 | chip->cmdfunc(mtd, NAND_CMD_READ0, data_col_addr, page); |
48 | } |
49 | |
50 | - for (i = 0; i < chip->ecc.total; i++) |
51 | - ecc_code[i] = chip->oob_poi[eccpos[i]]; |
52 | - |
53 | p = bufpoi + data_col_addr; |
54 | |
55 | for (i = eccbytes * start_step; num_steps; num_steps--, i += eccbytes, p += eccsize) { |
56 | -- |
57 | 1.7.4.1 |
58 | |
59 |