mtd: add init_size hook for NAND driver
Not all the NAND devices have all the information in additional
id bytes.
So add a hook in the nand_chip{} is a good method to calculate the
right value of oobsize, erasesize and so on.
Without the hook,you will get the wrong value, and you have to hack
in the ->scan_bbt() to change the wrong value which make the code
mess.
Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0b70c17..53f4e41 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2976,8 +2976,10 @@
chip->chipsize = (uint64_t)type->chipsize << 20;
- /* Newer devices have all the information in additional id bytes */
- if (!type->pagesize) {
+ if (!type->pagesize && chip->init_size) {
+ /* set the pagesize, oobsize, erasesize by the driver*/
+ busw = chip->init_size(mtd, chip, id_data);
+ } else if (!type->pagesize) {
int extid;
/* The 3rd id byte holds MLC / multichip data */
chip->cellinfo = id_data[2];