[PATCH 2/9] mtd: nand: remove redundant ID read
Brian Norris
computersforpeace at gmail.com
Mon Sep 24 23:40:48 EDT 2012
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 at gmail.com>
---
drivers/mtd/nand/nand_base.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 30588eb..f725247 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2898,7 +2898,8 @@ 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) {
@@ -2922,13 +2923,6 @@ 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);
--
1.7.11.3
More information about the linux-mtd
mailing list