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Commit 48bf35de authored by Boris Brezillon's avatar Boris Brezillon Committed by Brian Norris
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mtd: nand: jz4740: remove custom 'erased check' implementation 



The jz4740 driver is manually checking for 'erased pages' while
correcting ECC bytes.
This logic can now done by the core infrastructure, and can thus be removed
from this driver.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent cc01e607

drivers/mtd/nand/jz4740_nand.c

+1 −18
Original line number Diff line number Diff line
@@ -224,24 +224,6 @@ static int jz_nand_correct_ecc_rs(struct mtd_info *mtd, uint8_t *dat, 
	uint32_t t;

	unsigned int timeout = 1000;



	t = read_ecc[0];



	if (t == 0xff) {

		for (i = 1; i < 9; ++i)

			t &= read_ecc[i];



		t &= dat[0];

		t &= dat[nand->chip.ecc.size / 2];

		t &= dat[nand->chip.ecc.size - 1];



		if (t == 0xff) {

			for (i = 1; i < nand->chip.ecc.size - 1; ++i)

				t &= dat[i];

			if (t == 0xff)

				return 0;

		}

	}



	for (i = 0; i < 9; ++i)

		writeb(read_ecc[i], nand->base + JZ_REG_NAND_PAR0 + i);
@@ -443,6 +425,7 @@ static int jz_nand_probe(struct platform_device *pdev) 
	chip->ecc.size		= 512;

	chip->ecc.bytes		= 9;

	chip->ecc.strength	= 4;

	chip->ecc.options	= NAND_ECC_GENERIC_ERASED_CHECK;



	if (pdata)

		chip->ecc.layout = pdata->ecc_layout;