Commit dce2b4da authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Thomas Gleixner
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[MTD] Fix OTP for top-parameter devices 



Signed-off-by: default avatarNicolas Pitre <nico@cam.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 81dba488

drivers/mtd/chips/cfi_cmdset_0001.c

+14 −2
Original line number Diff line number Diff line
@@ -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];