[MTD] OneNAND: Remove unused fields

- Remove unused fields
- Fix typo

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 65acb85830d3..daf298948b9b 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1966,13 +1966,12 @@ static int onenand_probe(struct mtd_info *mtd)
         /* The data buffer size is equal to page size */
         mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
         mtd->oobsize = mtd->writesize >> 5;
-        /* Pagers per block is always 64 in OneNAND */
+        /* Pages per a block are always 64 in OneNAND */
         mtd->erasesize = mtd->writesize << 6;
 
         this->erase_shift = ffs(mtd->erasesize) - 1;
         this->page_shift = ffs(mtd->writesize) - 1;
-        this->ppb_shift = (this->erase_shift - this->page_shift);
-        this->page_mask = (mtd->erasesize / mtd->writesize) - 1;
+        this->page_mask = (1 << (this->erase_shift - this->page_shift)) - 1;
 
         /* REVIST: Multichip handling */