mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident()
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 ba29a29..1c48236 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2766,10 +2766,10 @@
*/
static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
struct nand_chip *chip,
- int busw, int *maf_id)
+ int busw, int *maf_id,
+ struct nand_flash_dev *type)
{
- struct nand_flash_dev *type = NULL;
- int i, dev_id, maf_idx;
+ int dev_id, maf_idx;
int tmp_id, tmp_manf;
/* Select the device */
@@ -2808,15 +2808,14 @@
return ERR_PTR(-ENODEV);
}
- /* Lookup the flash id */
- for (i = 0; nand_flash_ids[i].name != NULL; i++) {
- if (dev_id == nand_flash_ids[i].id) {
- type = &nand_flash_ids[i];
- break;
- }
- }
-
if (!type)
+ type = nand_flash_ids;
+
+ for (; type->name != NULL; type++)
+ if (dev_id == type->id)
+ break;
+
+ if (!type->name)
return ERR_PTR(-ENODEV);
if (!mtd->name)
@@ -2926,13 +2925,15 @@
* nand_scan_ident - [NAND Interface] Scan for the NAND device
* @mtd: MTD device structure
* @maxchips: Number of chips to scan for
+ * @table: Alternative NAND ID table
*
* This is the first phase of the normal nand_scan() function. It
* reads the flash ID and sets up MTD fields accordingly.
*
* The mtd->owner field must be set to the module of the caller.
*/
-int nand_scan_ident(struct mtd_info *mtd, int maxchips)
+int nand_scan_ident(struct mtd_info *mtd, int maxchips,
+ struct nand_flash_dev *table)
{
int i, busw, nand_maf_id;
struct nand_chip *chip = mtd->priv;
@@ -2944,7 +2945,7 @@
nand_set_defaults(chip, busw);
/* Read the flash type */
- type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id);
+ type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, table);
if (IS_ERR(type)) {
if (!(chip->options & NAND_SCAN_SILENT_NODEV))
@@ -3235,7 +3236,7 @@
BUG();
}
- ret = nand_scan_ident(mtd, maxchips);
+ ret = nand_scan_ident(mtd, maxchips, NULL);
if (!ret)
ret = nand_scan_tail(mtd);
return ret;