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path: root/drivers/mtd/nand/mtk_ecc.c
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Diffstat (limited to 'drivers/mtd/nand/mtk_ecc.c')
-rw-r--r--drivers/mtd/nand/mtk_ecc.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/mtd/nand/mtk_ecc.c b/drivers/mtd/nand/mtk_ecc.c
index 25a4fbd4d24a..d54f666417e1 100644
--- a/drivers/mtd/nand/mtk_ecc.c
+++ b/drivers/mtd/nand/mtk_ecc.c
@@ -366,7 +366,8 @@ int mtk_ecc_encode(struct mtk_ecc *ecc, struct mtk_ecc_config *config,
u8 *data, u32 bytes)
{
dma_addr_t addr;
- u32 *p, len, i;
+ u8 *p;
+ u32 len, i, val;
int ret = 0;
addr = dma_map_single(ecc->dev, data, bytes, DMA_TO_DEVICE);
@@ -392,11 +393,14 @@ int mtk_ecc_encode(struct mtk_ecc *ecc, struct mtk_ecc_config *config,
/* Program ECC bytes to OOB: per sector oob = FDM + ECC + SPARE */
len = (config->strength * ECC_PARITY_BITS + 7) >> 3;
- p = (u32 *)(data + bytes);
+ p = data + bytes;
/* write the parity bytes generated by the ECC back to the OOB region */
- for (i = 0; i < len; i++)
- p[i] = readl(ecc->regs + ECC_ENCPAR(i));
+ for (i = 0; i < len; i++) {
+ if ((i % 4) == 0)
+ val = readl(ecc->regs + ECC_ENCPAR(i / 4));
+ p[i] = (val >> ((i % 4) * 8)) & 0xff;
+ }
timeout:
dma_unmap_single(ecc->dev, addr, bytes, DMA_TO_DEVICE);
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