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Commit 477478ae authored by Josh Wu's avatar Josh Wu Committed by Brian Norris
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mtd: atmel_nand: add a definition for the oob reserved bytes 



It's better to use a macro instead of just a number.

Signed-off-by: default avatarJosh Wu <josh.wu@atmel.com>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent 3a434f66

drivers/mtd/nand/atmel_nand.c

+3 −2
Original line number Diff line number Diff line
@@ -485,7 +485,7 @@ static void pmecc_config_ecc_layout(struct nand_ecclayout *layout, 
	for (i = 0; i < ecc_len; i++)

		layout->eccpos[i] = oobsize - ecc_len + i;



	layout->oobfree[0].offset = 2;

	layout->oobfree[0].offset = PMECC_OOB_RESERVED_BYTES;

	layout->oobfree[0].length =

		oobsize - ecc_len - layout->oobfree[0].offset;

}
@@ -1254,7 +1254,8 @@ static int atmel_pmecc_nand_init_params(struct platform_device *pdev, 
		nand_chip->ecc.steps = mtd->writesize / sector_size;

		nand_chip->ecc.total = nand_chip->ecc.bytes *

			nand_chip->ecc.steps;

		if (nand_chip->ecc.total > mtd->oobsize - 2) {

		if (nand_chip->ecc.total >

				mtd->oobsize - PMECC_OOB_RESERVED_BYTES) {

			dev_err(host->dev, "No room for ECC bytes\n");

			err_no = -EINVAL;

			goto err;

drivers/mtd/nand/atmel_nand_ecc.h

+3 −0
Original line number Diff line number Diff line
@@ -152,4 +152,7 @@ 
/* Time out value for reading PMECC status register */

#define PMECC_MAX_TIMEOUT_MS			100



/* Reserved bytes in oob area */

#define PMECC_OOB_RESERVED_BYTES		2



#endif