mtd: replace the hardcode with the onfi_feature()

The current code uses the hardcode to detect the 16-bit bus width.
Use the onfi_feature() to replace it.

Signed-off-by: Huang Shijie <b32955@freescale.com>
[Brian: small fixup]
Signed-off-by: Brian Norris <computersforpeace@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 d8c723c..51d5b81 100644 (file)
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2981,9 +2981,11 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
        mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
        chip->chipsize = le32_to_cpu(p->blocks_per_lun);
        chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;
-       *busw = 0;
-       if (le16_to_cpu(p->features) & 1)
+
+       if (onfi_feature(chip) & ONFI_FEATURE_16_BIT_BUS)
                *busw = NAND_BUSWIDTH_16;
+       else
+               *busw = 0;
 
        if (p->ecc_bits != 0xff) {
                chip->ecc_strength_ds = p->ecc_bits;