diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2012-09-24 20:40:48 -0700 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-09-29 15:57:22 +0100 |
| commit | 4aef9b78de057349ad9d620851b14800af0b962c (patch) | |
| tree | 0e15d6408e74ceae8ac4f6ece99fbaca3dce79dd /drivers/mtd | |
| parent | 47450b35915c45309974c74f11c2d236db1b950f (diff) | |
| download | lwn-4aef9b78de057349ad9d620851b14800af0b962c.tar.gz lwn-4aef9b78de057349ad9d620851b14800af0b962c.zip | |
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d4107848ec0a..77b340068c6e 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -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); |