[MTD] [NAND] fix platform driver hotplug/coldplug

[linux-2.6-omap-h63xx.git] / drivers / mtd / nand / s3c2410.c

diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 512acfc89012ca962915e870f0a0957c0e1f41ec..f3fa1be22ddf9e6e16805f3def5075e2bd18cc82 100644 (file)
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -8,7 +8,7 @@
  *
  * Changelog:
  *     21-Sep-2004  BJD  Initial version
- *     23-Sep-2004  BJD  Mulitple device support
+ *     23-Sep-2004  BJD  Multiple device support
  *     28-Sep-2004  BJD  Fixed ECC placement for Hardware mode
  *     12-Oct-2004  BJD  Fixed errors in use of platform data
  *     18-Feb-2005  BJD  Fix sparse errors
@@ -366,23 +366,21 @@ static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
            ((diff2 ^ (diff2 >> 1)) & 0x55) == 0x55) {
                /* calculate the bit position of the error */
 
-               bit  = (diff2 >> 2) & 1;
-               bit |= (diff2 >> 3) & 2;
-               bit |= (diff2 >> 4) & 4;
+               bit  = ((diff2 >> 3) & 1) |
+                      ((diff2 >> 4) & 2) |
+                      ((diff2 >> 5) & 4);
 
                /* calculate the byte position of the error */
 
-               byte  = (diff1 << 1) & 0x80;
-               byte |= (diff1 << 2) & 0x40;
-               byte |= (diff1 << 3) & 0x20;
-               byte |= (diff1 << 4) & 0x10;
-
-               byte |= (diff0 >> 3) & 0x08;
-               byte |= (diff0 >> 2) & 0x04;
-               byte |= (diff0 >> 1) & 0x02;
-               byte |= (diff0 >> 0) & 0x01;
-
-               byte |= (diff2 << 8) & 0x100;
+               byte = ((diff2 << 7) & 0x100) |
+                      ((diff1 << 0) & 0x80)  |
+                      ((diff1 << 1) & 0x40)  |
+                      ((diff1 << 2) & 0x20)  |
+                      ((diff1 << 3) & 0x10)  |
+                      ((diff0 >> 4) & 0x08)  |
+                      ((diff0 >> 3) & 0x04)  |
+                      ((diff0 >> 2) & 0x02)  |
+                      ((diff0 >> 1) & 0x01);
 
                dev_dbg(info->device, "correcting error bit %d, byte %d\n",
                        bit, byte);
@@ -401,7 +399,7 @@ static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
        if ((diff0 & ~(1<<fls(diff0))) == 0)
                return 1;
 
-       return 0;
+       return -1;
 }
 
 /* ECC functions
@@ -929,3 +927,6 @@ module_exit(s3c2410_nand_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 MODULE_DESCRIPTION("S3C24XX MTD NAND driver");
+MODULE_ALIAS("platform:s3c2410-nand");
+MODULE_ALIAS("platform:s3c2412-nand");
+MODULE_ALIAS("platform:s3c2440-nand");