diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 621c3f8ec27b..8006d51b7d27 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1093,7 +1093,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) { struct onenand_chip *this = mtd->priv; - char *readp = this->page_buf + mtd->writesize; + char oobbuf[64]; int status, i; this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize); @@ -1102,9 +1102,9 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to if (status) return status; - this->read_bufferram(mtd, ONENAND_SPARERAM, readp, 0, mtd->oobsize); - for(i = 0; i < mtd->oobsize; i++) - if (buf[i] != 0xFF && buf[i] != readp[i]) + this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); + for (i = 0; i < mtd->oobsize; i++) + if (buf[i] != 0xFF && buf[i] != oobbuf[i]) return -EBADMSG; return 0; @@ -1312,6 +1312,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, struct onenand_chip *this = mtd->priv; int column, ret = 0, oobsize; int written = 0; + u_char *oobbuf; DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); @@ -1331,7 +1332,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, } /* For compatibility with NAND: Do not allow write past end of page */ - if (column + len > oobsize) { + if (unlikely(column + len > oobsize)) { printk(KERN_ERR "onenand_write_oob: " "Attempt to write past end of page\n"); return -EINVAL; @@ -1348,6 +1349,8 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, /* Grab the lock and see if the device is available */ onenand_get_device(mtd, FL_WRITING); + oobbuf = this->page_buf + mtd->writesize; + /* Loop until all data write */ while (written < len) { int thislen = min_t(int, oobsize, len - written); @@ -1358,12 +1361,12 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, /* We send data to spare ram with oobsize * to prevent byte access */ - memset(this->page_buf, 0xff, mtd->oobsize); + memset(oobbuf, 0xff, mtd->oobsize); if (mode == MTD_OOB_AUTO) - onenand_fill_auto_oob(mtd, this->page_buf, buf, column, thislen); + onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); else - memcpy(this->page_buf + column, buf, thislen); - this->write_bufferram(mtd, ONENAND_SPARERAM, this->page_buf, 0, mtd->oobsize); + memcpy(oobbuf + column, buf, thislen); + this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); @@ -1375,7 +1378,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, break; } - ret = onenand_verify_oob(mtd, this->page_buf, to); + ret = onenand_verify_oob(mtd, oobbuf, to); if (ret) { printk(KERN_ERR "onenand_write_oob: verify failed %d\n", ret); break; |