mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-28 08:27:21 +02:00
06082c3b5a
This patchset optimizes nand read access and reduces the ubi attach time by ~2/3 Credits go to dvdk for having the idea.
45 lines
1.6 KiB
Diff
45 lines
1.6 KiB
Diff
--- a/drivers/mtd/nand/nand_base.c
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+++ b/drivers/mtd/nand/nand_base.c
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@@ -1314,8 +1314,8 @@ static int nand_read_page_hwecc_oob_firs
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/* Read the OOB area first */
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if (mtd->writesize > 512) {
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- chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page);
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- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
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+ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page);
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+ chip->read_buf(mtd, ecc_code, chip->ecc.total);
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chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
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} else {
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chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
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@@ -1323,9 +1323,6 @@ static int nand_read_page_hwecc_oob_firs
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chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
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}
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- for (i = 0; i < chip->ecc.total; i++)
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- ecc_code[i] = chip->oob_poi[eccpos[i]];
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-
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for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
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int stat;
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@@ -1380,8 +1377,8 @@ static int nand_read_subpage_hwecc_oob_f
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/* Read the OOB area first */
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if (mtd->writesize > 512) {
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- chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page);
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- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
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+ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize + eccpos[0], page);
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+ chip->read_buf(mtd, ecc_code, chip->ecc.total);
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chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1);
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} else {
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chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
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@@ -1389,9 +1386,6 @@ static int nand_read_subpage_hwecc_oob_f
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chip->cmdfunc(mtd, NAND_CMD_READ0, data_col_addr, page);
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}
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- for (i = 0; i < chip->ecc.total; i++)
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- ecc_code[i] = chip->oob_poi[eccpos[i]];
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-
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p = bufpoi + data_col_addr;
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for (i = eccbytes * start_step; num_steps; num_steps--, i += eccbytes, p += eccsize) {
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