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Commit cf840392 authored by Mike Frysinger's avatar Mike Frysinger Committed by David Woodhouse
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[MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we... 


[MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10

Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent e274f025

drivers/mtd/nand/bf5xx_nand.c

+2 −2
Original line number Diff line number Diff line
@@ -298,7 +298,7 @@ static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd, 
	ecc0 = bfin_read_NFC_ECC0();

	ecc1 = bfin_read_NFC_ECC1();



	code[0] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);

	code[0] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);



	dev_dbg(info->device, "returning ecc 0x%08x\n", code[0]);
@@ -310,7 +310,7 @@ static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd, 
	if (page_size == 512) {

		ecc0 = bfin_read_NFC_ECC2();

		ecc1 = bfin_read_NFC_ECC3();

		code[1] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11);

		code[1] = (ecc0 & 0x7ff) | ((ecc1 & 0x7ff) << 11);



		/* second 3 bytes in ecc_code for second 256

		 * bytes of 512 page size