diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 779327b845d1..a7645794364c 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -636,6 +636,29 @@ static void onenand_update_bufferram(struct mtd_info *mtd, loff_t addr, } /** + * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information + * @param mtd MTD data structure + * @param addr start address to invalidate + * @param len length to invalidate + * + * Invalidate BufferRAM information + */ +static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr, + unsigned int len) +{ + struct onenand_chip *this = mtd->priv; + int i; + loff_t end_addr = addr + len; + + /* Invalidate BufferRAM */ + for (i = 0; i < MAX_BUFFERRAM; i++) { + loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift; + if (buf_addr >= addr && buf_addr < end_addr) + this->bufferram[i].blockpage = -1; + } +} + +/** * onenand_get_device - [GENERIC] Get chip for selected access * @param mtd MTD device structure * @param new_state the state which is requested @@ -1476,6 +1499,8 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); + onenand_invalidate_bufferram(mtd, addr, block_size); + ret = this->wait(mtd, FL_ERASING); /* Check, if it is write protected */ if (ret) { |