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mtd: nand: remove redundant ID read 

Instead of reading 2 bytes then later 8 bytes, we can simply read all 8
bytes from the start.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Brian Norris 2012-09-24 20:40:48 -07:00 committed by David Woodhouse
parent 47450b3591
commit 4aef9b78de
1 changed files with 2 additions and 8 deletions
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10
drivers/mtd/nand/nand_base.c
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@ -2942,7 +2942,8 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
for (i = 0; i < 2; i++)
/* Read entire ID string */
for (i = 0; i < 8; i++)
id_data[i] = chip->read_byte(mtd);
if (id_data[0] != *maf_id || id_data[1] != *dev_id) {
@ -2966,13 +2967,6 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
goto ident_done;
}
chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
/* Read entire ID string */
for (i = 0; i < 8; i++)
id_data[i] = chip->read_byte(mtd);
if (!type->name)
return ERR_PTR(-ENODEV);