diff options
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 52 |
1 files changed, 31 insertions, 21 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 0249b4aa097..65acb85830d 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -909,41 +909,51 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to } /** - * onenand_verify_page - [GENERIC] verify the chip contents after a write - * @param mtd MTD device structure - * @param buf the databuffer to verify + * onenand_verify - [GENERIC] verify the chip contents after a write + * @param mtd MTD device structure + * @param buf the databuffer to verify + * @param addr offset to read from + * @param len number of bytes to read and compare * - * Check DataRAM area directly */ -static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr) +static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) { struct onenand_chip *this = mtd->priv; - void __iomem *dataram0, *dataram1; + void __iomem *dataram; int ret = 0; + int thislen, column; - /* In partial page write, just skip it */ - if ((addr & (mtd->writesize - 1)) != 0) - return 0; + while (len != 0) { + thislen = min_t(int, mtd->writesize, len); + column = addr & (mtd->writesize - 1); + if (column + thislen > mtd->writesize) + thislen = mtd->writesize - column; - this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize); + this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize); - ret = this->wait(mtd, FL_READING); - if (ret) - return ret; + onenand_update_bufferram(mtd, addr, 0); + + ret = this->wait(mtd, FL_READING); + if (ret) + return ret; - onenand_update_bufferram(mtd, addr, 1); + onenand_update_bufferram(mtd, addr, 1); - /* Check, if the two dataram areas are same */ - dataram0 = this->base + ONENAND_DATARAM; - dataram1 = dataram0 + mtd->writesize; + dataram = this->base + ONENAND_DATARAM; + dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM); - if (memcmp(dataram0, dataram1, mtd->writesize)) - return -EBADMSG; + if (memcmp(buf, dataram + column, thislen)) + return -EBADMSG; + + len -= thislen; + buf += thislen; + addr += thislen; + } return 0; } #else -#define onenand_verify_page(...) (0) +#define onenand_verify(...) (0) #define onenand_verify_oob(...) (0) #endif @@ -1025,7 +1035,7 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, } /* Only check verify write turn on */ - ret = onenand_verify_page(mtd, (u_char *) wbuf, to); + ret = onenand_verify(mtd, (u_char *) wbuf, to, thislen); if (ret) { DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: verify failed %d\n", ret); break; |