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[MTD] Fix OTP for top-parameter devices 

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Nicolas Pitre 2005-04-01 17:36:29 +01:00 committed by Thomas Gleixner
parent 81dba48879
commit dce2b4da69
1 changed files with 14 additions and 2 deletions
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16
drivers/mtd/chips/cfi_cmdset_0001.c
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@ -4,7 +4,7 @@
*
* (C) 2000 Red Hat. GPL'd
*
* $Id: cfi_cmdset_0001.c,v 1.174 2005/04/01 01:59:52 nico Exp $
* $Id: cfi_cmdset_0001.c,v 1.175 2005/04/01 16:36:25 nico Exp $
*
*
* 10/10/2000 Nicolas Pitre <nico@cam.org>
@ -2062,8 +2062,20 @@ static int cfi_intelext_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
/* we need real chips here not virtual ones */
devsize = (1 << cfi->cfiq->DevSize) * cfi->interleave;
chip_step = devsize >> cfi->chipshift;
chip_num = 0;
for (chip_num = 0; chip_num < cfi->numchips; chip_num += chip_step) {
/* Some chips have OTP located in the _top_ partition only.
For example: Intel 28F256L18T (T means top-parameter device) */
if (cfi->mfr == MANUFACTURER_INTEL) {
switch (cfi->id) {
case 0x880b:
case 0x880c:
case 0x880d:
chip_num = chip_step - 1;
}
}
for ( ; chip_num < cfi->numchips; chip_num += chip_step) {
chip = &cfi->chips[chip_num];
otp = (struct cfi_intelext_otpinfo *)&extp->extra[0];