diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/1000-nand_driver_fixes.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/1000-nand_driver_fixes.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/1000-nand_driver_fixes.patch b/target/linux/goldfish/patches-2.6.30/1000-nand_driver_fixes.patch new file mode 100644 index 000000000..0cd366ce9 --- /dev/null +++ b/target/linux/goldfish/patches-2.6.30/1000-nand_driver_fixes.patch @@ -0,0 +1,94 @@ +--- a/drivers/mtd/devices/goldfish_nand.c ++++ b/drivers/mtd/devices/goldfish_nand.c +@@ -65,7 +65,7 @@ static int goldfish_nand_erase(struct mt + if(rem) + goto invalid_arg; + ofs *= (mtd->writesize + mtd->oobsize); +- ++ + if(len % mtd->writesize) + goto invalid_arg; + len = len / mtd->writesize * (mtd->writesize + mtd->oobsize); +@@ -94,15 +94,12 @@ static int goldfish_nand_read_oob(struct + + if(ofs + ops->len > mtd->size) + goto invalid_arg; +- if(ops->datbuf && ops->len && ops->len != mtd->writesize) +- goto invalid_arg; + if(ops->ooblen + ops->ooboffs > mtd->oobsize) + goto invalid_arg; + + rem = do_div(ofs, mtd->writesize); +- if(rem) +- goto invalid_arg; + ofs *= (mtd->writesize + mtd->oobsize); ++ ofs += rem; + + if(ops->datbuf) + ops->retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, ofs, +@@ -131,7 +128,7 @@ static int goldfish_nand_write_oob(struc + goto invalid_arg; + if(ops->ooblen + ops->ooboffs > mtd->oobsize) + goto invalid_arg; +- ++ + rem = do_div(ofs, mtd->writesize); + if(rem) + goto invalid_arg; +@@ -160,15 +157,24 @@ static int goldfish_nand_read(struct mtd + + if(from + len > mtd->size) + goto invalid_arg; +- if(len != mtd->writesize) +- goto invalid_arg; ++ ++ *retlen = 0; + + rem = do_div(from, mtd->writesize); +- if(rem) +- goto invalid_arg; + from *= (mtd->writesize + mtd->oobsize); ++ from += rem; + +- *retlen = goldfish_nand_cmd(mtd, NAND_CMD_READ, from, len, buf); ++ do { ++ *retlen += goldfish_nand_cmd(mtd, NAND_CMD_READ, from, min(len, mtd->writesize - rem), buf); ++ if (len > mtd->writesize - rem) { ++ len -= mtd->writesize - rem; ++ buf += mtd->writesize - rem; ++ from += mtd->writesize + mtd->oobsize - rem; ++ rem = 0; ++ } else { ++ len = 0; ++ } ++ } while (len); + return 0; + + invalid_arg: +@@ -184,15 +190,23 @@ static int goldfish_nand_write(struct mt + + if(to + len > mtd->size) + goto invalid_arg; +- if(len != mtd->writesize) +- goto invalid_arg; + + rem = do_div(to, mtd->writesize); + if(rem) + goto invalid_arg; + to *= (mtd->writesize + mtd->oobsize); + +- *retlen = goldfish_nand_cmd(mtd, NAND_CMD_WRITE, to, len, (void *)buf); ++ *retlen = 0; ++ do { ++ *retlen += goldfish_nand_cmd(mtd, NAND_CMD_WRITE, to, min(len, mtd->writesize), (void *)buf); ++ if (len > mtd->writesize) { ++ len -= mtd->writesize; ++ buf += mtd->writesize; ++ to += mtd->writesize + mtd->oobsize; ++ } else { ++ len = 0; ++ } ++ } while (len); + return 0; + + invalid_arg: |