diff options
Diffstat (limited to 'target/linux/xburst/patches-3.8/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch')
| -rw-r--r-- | target/linux/xburst/patches-3.8/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-3.8/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch b/target/linux/xburst/patches-3.8/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch new file mode 100644 index 0000000000..e65ae6e1d0 --- /dev/null +++ b/target/linux/xburst/patches-3.8/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch @@ -0,0 +1,53 @@ +From 4f28237a750afd1112b6f1266d36f8b718efe89c Mon Sep 17 00:00:00 2001 +From: Xiangfu Liu <xiangfu@sharism.cc> +Date: Tue, 6 Mar 2012 11:19:26 +0800 +Subject: [PATCH 05/21] NAND-Optimize-reading-the-eec-data-for-the-JZ4740 + +--- + drivers/mtd/nand/nand_base.c | 14 ++++---------- + 1 files changed, 4 insertions(+), 10 deletions(-) + +--- a/drivers/mtd/nand/nand_base.c ++++ b/drivers/mtd/nand/nand_base.c +@@ -1300,8 +1300,8 @@ static int nand_read_page_hwecc_oob_firs + + /* Read the OOB area first */ + if (mtd->writesize > 512) { +- chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); +- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page); ++ chip->read_buf(mtd, ecc_code, chip->ecc.total); + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1); + } else { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); +@@ -1309,9 +1309,6 @@ static int nand_read_page_hwecc_oob_firs + chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); + } + +- for (i = 0; i < chip->ecc.total; i++) +- ecc_code[i] = chip->oob_poi[eccpos[i]]; +- + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + int stat; + +@@ -1368,8 +1365,8 @@ static int nand_read_subpage_hwecc_oob_f + + /* Read the OOB area first */ + if (mtd->writesize > 512) { +- chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); +- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page); ++ chip->read_buf(mtd, ecc_code, chip->ecc.total); + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1); + } else { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); +@@ -1377,9 +1374,6 @@ static int nand_read_subpage_hwecc_oob_f + chip->cmdfunc(mtd, NAND_CMD_READ0, data_col_addr, page); + } + +- for (i = 0; i < chip->ecc.total; i++) +- ecc_code[i] = chip->oob_poi[eccpos[i]]; +- + p = bufpoi + data_col_addr; + + for (i = eccbytes * start_step; num_steps; num_steps--, i += eccbytes, p += eccsize) { |