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path: root/drivers/mtd/nand/bf5xx_nand.c
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Diffstat (limited to 'drivers/mtd/nand/bf5xx_nand.c')
-rw-r--r--drivers/mtd/nand/bf5xx_nand.c45
1 files changed, 26 insertions, 19 deletions
diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index 61bd2160717c..7f6b30e615b7 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -142,7 +142,6 @@ static struct nand_ecclayout bootrom_ecclayout = {
struct bf5xx_nand_info {
/* mtd info */
struct nand_hw_control controller;
- struct mtd_info mtd;
struct nand_chip chip;
/* platform info */
@@ -160,7 +159,8 @@ struct bf5xx_nand_info {
*/
static struct bf5xx_nand_info *mtd_to_nand_info(struct mtd_info *mtd)
{
- return container_of(mtd, struct bf5xx_nand_info, mtd);
+ return container_of(mtd_to_nand(mtd), struct bf5xx_nand_info,
+ chip);
}
static struct bf5xx_nand_info *to_nand_info(struct platform_device *pdev)
@@ -252,7 +252,7 @@ static int bf5xx_nand_correct_data_256(struct mtd_info *mtd, u_char *dat,
*/
if (hweight32(syndrome[0]) == 1) {
dev_err(info->device, "ECC data was incorrect!\n");
- return 1;
+ return -EBADMSG;
}
syndrome[1] = (calced & 0x7FF) ^ (stored & 0x7FF);
@@ -285,7 +285,7 @@ static int bf5xx_nand_correct_data_256(struct mtd_info *mtd, u_char *dat,
data = data ^ (0x1 << failing_bit);
*(dat + failing_byte) = data;
- return 0;
+ return 1;
}
/*
@@ -298,26 +298,34 @@ static int bf5xx_nand_correct_data_256(struct mtd_info *mtd, u_char *dat,
dev_err(info->device,
"Please discard data, mark bad block\n");
- return 1;
+ return -EBADMSG;
}
static int bf5xx_nand_correct_data(struct mtd_info *mtd, u_char *dat,
u_char *read_ecc, u_char *calc_ecc)
{
- struct nand_chip *chip = mtd->priv;
- int ret;
+ struct nand_chip *chip = mtd_to_nand(mtd);
+ int ret, bitflips = 0;
ret = bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc);
+ if (ret < 0)
+ return ret;
+
+ bitflips = ret;
/* If ecc size is 512, correct second 256 bytes */
if (chip->ecc.size == 512) {
dat += 256;
read_ecc += 3;
calc_ecc += 3;
- ret |= bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc);
+ ret = bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc);
+ if (ret < 0)
+ return ret;
+
+ bitflips += ret;
}
- return ret;
+ return bitflips;
}
static void bf5xx_nand_enable_hwecc(struct mtd_info *mtd, int mode)
@@ -329,7 +337,7 @@ static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd,
const u_char *dat, u_char *ecc_code)
{
struct bf5xx_nand_info *info = mtd_to_nand_info(mtd);
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
u16 ecc0, ecc1;
u32 code[2];
u8 *p;
@@ -466,7 +474,7 @@ static void bf5xx_nand_dma_rw(struct mtd_info *mtd,
uint8_t *buf, int is_read)
{
struct bf5xx_nand_info *info = mtd_to_nand_info(mtd);
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
unsigned short val;
dev_dbg(info->device, " mtd->%p, buf->%p, is_read %d\n",
@@ -532,7 +540,7 @@ static void bf5xx_nand_dma_read_buf(struct mtd_info *mtd,
uint8_t *buf, int len)
{
struct bf5xx_nand_info *info = mtd_to_nand_info(mtd);
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
dev_dbg(info->device, "mtd->%p, buf->%p, int %d\n", mtd, buf, len);
@@ -546,7 +554,7 @@ static void bf5xx_nand_dma_write_buf(struct mtd_info *mtd,
const uint8_t *buf, int len)
{
struct bf5xx_nand_info *info = mtd_to_nand_info(mtd);
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
dev_dbg(info->device, "mtd->%p, buf->%p, len %d\n", mtd, buf, len);
@@ -660,7 +668,7 @@ static int bf5xx_nand_hw_init(struct bf5xx_nand_info *info)
*/
static int bf5xx_nand_add_partition(struct bf5xx_nand_info *info)
{
- struct mtd_info *mtd = &info->mtd;
+ struct mtd_info *mtd = nand_to_mtd(&info->chip);
struct mtd_partition *parts = info->platform->partitions;
int nr = info->platform->nr_partitions;
@@ -675,7 +683,7 @@ static int bf5xx_nand_remove(struct platform_device *pdev)
* and their partitions, then go through freeing the
* resources used
*/
- nand_release(&info->mtd);
+ nand_release(nand_to_mtd(&info->chip));
peripheral_free_list(bfin_nfc_pin_req);
bf5xx_nand_dma_remove(info);
@@ -685,7 +693,7 @@ static int bf5xx_nand_remove(struct platform_device *pdev)
static int bf5xx_nand_scan(struct mtd_info *mtd)
{
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
int ret;
ret = nand_scan_ident(mtd, 1, NULL);
@@ -756,6 +764,7 @@ static int bf5xx_nand_probe(struct platform_device *pdev)
/* initialise chip data struct */
chip = &info->chip;
+ mtd = nand_to_mtd(&info->chip);
if (plat->data_width)
chip->options |= NAND_BUSWIDTH_16;
@@ -772,7 +781,7 @@ static int bf5xx_nand_probe(struct platform_device *pdev)
chip->cmd_ctrl = bf5xx_nand_hwcontrol;
chip->dev_ready = bf5xx_nand_devready;
- chip->priv = &info->mtd;
+ nand_set_controller_data(chip, mtd);
chip->controller = &info->controller;
chip->IO_ADDR_R = (void __iomem *) NFC_READ;
@@ -781,8 +790,6 @@ static int bf5xx_nand_probe(struct platform_device *pdev)
chip->chip_delay = 0;
/* initialise mtd info data struct */
- mtd = &info->mtd;
- mtd->priv = chip;
mtd->dev.parent = &pdev->dev;
/* initialise the hardware */