mtd: nand: Allow caller to pass alternative ID table to nand_scan_ide…

…nt()

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/atmel_nand.c

@@ -474,7 +474,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
 	}
 
 	/* first scan to find the device and get the page size */
-	if (nand_scan_ident(mtd, 1)) {
+	if (nand_scan_ident(mtd, 1, NULL)) {
 		res = -ENXIO;
 		goto err_scan_ident;
 	}

drivers/mtd/nand/bcm_umi_nand.c

@@ -446,7 +446,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
 	 * layout we'll be using.
 	 */
 
-	err = nand_scan_ident(board_mtd, 1);
+	err = nand_scan_ident(board_mtd, 1, NULL);
 	if (err) {
 		printk(KERN_ERR "nand_scan failed: %d\n", err);
 		iounmap(bcm_umi_io_base);

drivers/mtd/nand/cafe_nand.c

@@ -761,7 +761,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
 		cafe_readl(cafe, GLOBAL_CTRL), cafe_readl(cafe, GLOBAL_IRQ_MASK));
 
 	/* Scan to find existence of the device */
-	if (nand_scan_ident(mtd, 2)) {
+	if (nand_scan_ident(mtd, 2, NULL)) {
 		err = -ENXIO;
 		goto out_irq;
 	}

drivers/mtd/nand/davinci_nand.c

@@ -690,7 +690,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
 	spin_unlock_irq(&davinci_nand_lock);
 
 	/* Scan to find existence of the device(s) */
-	ret = nand_scan_ident(&info->mtd, pdata->mask_chipsel ? 2 : 1);
+	ret = nand_scan_ident(&info->mtd, pdata->mask_chipsel ? 2 : 1, NULL);
 	if (ret < 0) {
 		dev_dbg(&pdev->dev, "no NAND chip(s) found\n");
 		goto err_scan;

drivers/mtd/nand/fsl_elbc_nand.c

@@ -891,7 +891,7 @@ static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl,
 	if (ret)
 		goto err;
 
-	ret = nand_scan_ident(&priv->mtd, 1);
+	ret = nand_scan_ident(&priv->mtd, 1, NULL);
 	if (ret)
 		goto err;
 

drivers/mtd/nand/mxc_nand.c

@@ -819,7 +819,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
 	}
 
 	/* first scan to find the device and get the page size */
-	if (nand_scan_ident(mtd, 1)) {
+	if (nand_scan_ident(mtd, 1, NULL)) {
 		err = -ENXIO;
 		goto escan;
 	}

drivers/mtd/nand/nand_base.c

@@ -2766,10 +2766,10 @@ static void nand_set_defaults(struct nand_chip *chip, int busw)
  */
 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 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 		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 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
  * 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 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips)
 	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 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
 		BUG();
 	}
 
-	ret = nand_scan_ident(mtd, maxchips);
+	ret = nand_scan_ident(mtd, maxchips, NULL);
 	if (!ret)
 		ret = nand_scan_tail(mtd);
 	return ret;

drivers/mtd/nand/s3c2410.c

@@ -1013,7 +1013,8 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
 		s3c2410_nand_init_chip(info, nmtd, sets);
 
 		nmtd->scan_res = nand_scan_ident(&nmtd->mtd,
-						 (sets) ? sets->nr_chips : 1);
+						 (sets) ? sets->nr_chips : 1,
+						 NULL);
 
 		if (nmtd->scan_res == 0) {
 			s3c2410_nand_update_chip(info, nmtd);

drivers/mtd/nand/sh_flctl.c

@@ -825,7 +825,7 @@ static int __init flctl_probe(struct platform_device *pdev)
 	nand->select_chip = flctl_select_chip;
 	nand->cmdfunc = flctl_cmdfunc;
 
-	ret = nand_scan_ident(flctl_mtd, 1);
+	ret = nand_scan_ident(flctl_mtd, 1, NULL);
 	if (ret)
 		goto err;
 

drivers/mtd/nand/sm_common.c

@@ -75,7 +75,7 @@ int sm_register_device(struct mtd_info *mtd)
 	chip->options |= NAND_SKIP_BBTSCAN | NAND_SMARTMEDIA;
 
 	/* Scan for card properties */
-	ret = nand_scan_ident(mtd, 1);
+	ret = nand_scan_ident(mtd, 1, NULL);
 
 	if (ret)
 		return ret;

drivers/mtd/nand/socrates_nand.c

@@ -220,7 +220,7 @@ static int __devinit socrates_nand_probe(struct of_device *ofdev,
 	dev_set_drvdata(&ofdev->dev, host);
 
 	/* first scan to find the device and get the page size */
-	if (nand_scan_ident(mtd, 1)) {
+	if (nand_scan_ident(mtd, 1, NULL)) {
 		res = -ENXIO;
 		goto out;
 	}

drivers/mtd/nand/txx9ndfmc.c

@@ -274,7 +274,7 @@ static int txx9ndfmc_nand_scan(struct mtd_info *mtd)
 	struct nand_chip *chip = mtd->priv;
 	int ret;
 
-	ret = nand_scan_ident(mtd, 1);
+	ret = nand_scan_ident(mtd, 1, NULL);
 	if (!ret) {
 		if (mtd->writesize >= 512) {
 			chip->ecc.size = mtd->writesize;

include/linux/mtd/nand.h

@@ -25,11 +25,13 @@
 #include <linux/mtd/bbm.h>
 
 struct mtd_info;
+struct nand_flash_dev;
 /* Scan and identify a NAND device */
 extern int nand_scan (struct mtd_info *mtd, int max_chips);
 /* Separate phases of nand_scan(), allowing board driver to intervene
  * and override command or ECC setup according to flash type */
-extern int nand_scan_ident(struct mtd_info *mtd, int max_chips);
+extern int nand_scan_ident(struct mtd_info *mtd, int max_chips,
+			   struct nand_flash_dev *table);
 extern int nand_scan_tail(struct mtd_info *mtd);
 
 /* Free resources held by the NAND device */