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95 lines
2.4 KiB
Diff
95 lines
2.4 KiB
Diff
--- a/drivers/mtd/devices/goldfish_nand.c
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+++ b/drivers/mtd/devices/goldfish_nand.c
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@@ -65,7 +65,7 @@ static int goldfish_nand_erase(struct mt
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if(rem)
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goto invalid_arg;
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ofs *= (mtd->writesize + mtd->oobsize);
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-
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+
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if(len % mtd->writesize)
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goto invalid_arg;
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len = len / mtd->writesize * (mtd->writesize + mtd->oobsize);
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@@ -94,15 +94,12 @@ static int goldfish_nand_read_oob(struct
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if(ofs + ops->len > mtd->size)
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goto invalid_arg;
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- if(ops->datbuf && ops->len && ops->len != mtd->writesize)
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- goto invalid_arg;
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if(ops->ooblen + ops->ooboffs > mtd->oobsize)
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goto invalid_arg;
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rem = do_div(ofs, mtd->writesize);
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- if(rem)
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- goto invalid_arg;
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ofs *= (mtd->writesize + mtd->oobsize);
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+ ofs += rem;
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if(ops->datbuf)
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ops->retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, ofs,
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@@ -131,7 +128,7 @@ static int goldfish_nand_write_oob(struc
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goto invalid_arg;
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if(ops->ooblen + ops->ooboffs > mtd->oobsize)
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goto invalid_arg;
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-
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+
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rem = do_div(ofs, mtd->writesize);
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if(rem)
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goto invalid_arg;
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@@ -160,15 +157,24 @@ static int goldfish_nand_read(struct mtd
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if(from + len > mtd->size)
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goto invalid_arg;
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- if(len != mtd->writesize)
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- goto invalid_arg;
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+
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+ *retlen = 0;
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rem = do_div(from, mtd->writesize);
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- if(rem)
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- goto invalid_arg;
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from *= (mtd->writesize + mtd->oobsize);
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+ from += rem;
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- *retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, from, len, buf);
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+ do {
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+ *retlen += goldfish_nand_cmd(mtd, NAND_CMD_READ, from, min(len, mtd->writesize - rem), buf);
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+ if (len > mtd->writesize - rem) {
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+ len -= mtd->writesize - rem;
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+ buf += mtd->writesize - rem;
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+ from += mtd->writesize + mtd->oobsize - rem;
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+ rem = 0;
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+ } else {
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+ len = 0;
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+ }
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+ } while (len);
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return 0;
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invalid_arg:
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@@ -184,15 +190,23 @@ static int goldfish_nand_write(struct mt
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if(to + len > mtd->size)
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goto invalid_arg;
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- if(len != mtd->writesize)
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- goto invalid_arg;
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rem = do_div(to, mtd->writesize);
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if(rem)
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goto invalid_arg;
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to *= (mtd->writesize + mtd->oobsize);
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- *retlen = goldfish_nand_cmd(mtd, NAND_CMD_WRITE, to, len, (void *)buf);
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+ *retlen = 0;
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+ do {
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+ *retlen += goldfish_nand_cmd(mtd, NAND_CMD_WRITE, to, min(len, mtd->writesize), (void *)buf);
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+ if (len > mtd->writesize) {
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+ len -= mtd->writesize;
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+ buf += mtd->writesize;
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+ to += mtd->writesize + mtd->oobsize;
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+ } else {
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+ len = 0;
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+ }
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+ } while (len);
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return 0;
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invalid_arg:
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