[MTD] Fix OTP for top-parameter devices (dce2b4da) · Commits · 戴 / test

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];