[target/xburst] level up target xburst to linux kernel version 3.2.1

[openwrt.git] / target / linux / xburst / patches-3.2 / 0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch

diff --git a/target/linux/xburst/patches-3.2/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch b/target/linux/xburst/patches-3.2/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch
new file mode 100644 (file)
index 0000000..89247ca
--- /dev/null
+++ b/target/linux/xburst/patches-3.2/0005-NAND-Optimize-reading-the-eec-data-for-the-JZ4740.patch
@@ -0,0 +1,58 @@
+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(-)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 0131e84..74b8cce 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1295,8 +1295,8 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ 
+       /* 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);
+@@ -1304,9 +1304,6 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+               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;
+ 
+@@ -1361,8 +1358,8 @@ static int nand_read_subpage_hwecc_oob_first(struct mtd_info *mtd, struct nand_c
+ 
+       /* 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);
+@@ -1370,9 +1367,6 @@ static int nand_read_subpage_hwecc_oob_first(struct mtd_info *mtd, struct nand_c
+               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) {
+-- 
+1.7.5.4
+