diff options
Diffstat (limited to 'drivers/mtd/onenand')
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index f690c1916d1d..779327b845d1 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -577,7 +577,7 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area, static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) { struct onenand_chip *this = mtd->priv; - int blockpage; + int blockpage, found = 0; unsigned int i; blockpage = (int) (addr >> this->page_shift); @@ -585,16 +585,24 @@ static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) /* Is there valid data? */ i = ONENAND_CURRENT_BUFFERRAM(this); if (this->bufferram[i].blockpage == blockpage) - return 1; + found = 1; + else { + /* Check another BufferRAM */ + i = ONENAND_NEXT_BUFFERRAM(this); + if (this->bufferram[i].blockpage == blockpage) { + ONENAND_SET_NEXT_BUFFERRAM(this); + found = 1; + } + } - /* Check another BufferRAM */ - i = ONENAND_NEXT_BUFFERRAM(this); - if (this->bufferram[i].blockpage == blockpage) { - ONENAND_SET_NEXT_BUFFERRAM(this); - return 1; + if (found && ONENAND_IS_DDP(this)) { + /* Select DataRAM for DDP */ + int block = (int) (addr >> this->erase_shift); + int value = onenand_bufferram_address(this, block); + this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); } - return 0; + return found; } /** |