[RFC PATCH 10/27] mtd: rawnand: Get rid of chip->ecc.priv

[Miquel Raynal <miquel.raynal@xxxxxxxxxxx>]

nand_ecc_ctrl embeds a private pointer which had only a meaning in the
sunxi driver. This structure will soon be deprecated, but as this
field is actually not needed, let's just drop it.

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
 drivers/mtd/nand/raw/sunxi_nand.c | 29 ++++++++++++++---------------
 include/linux/mtd/rawnand.h       |  2 --
 2 files changed, 14 insertions(+), 17 deletions(-)

diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index b56f89c992f3..d05f71f33b5c 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -230,6 +230,7 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
  *			this NAND controller
  * @complete:		a completion object used to wait for NAND
  *			controller events
+ * @ecc:		ECC controller structure
  */
 struct sunxi_nfc {
 	struct nand_controller controller;
@@ -243,6 +244,7 @@ struct sunxi_nfc {
 	struct list_head chips;
 	struct completion complete;
 	struct dma_chan *dmac;
+	struct sunxi_nand_hw_ecc *ecc;
 };
 
 static inline struct sunxi_nfc *to_sunxi_nfc(struct nand_controller *ctrl)
@@ -774,14 +776,13 @@ static void sunxi_nfc_hw_ecc_enable(struct mtd_info *mtd)
 {
 	struct nand_chip *nand = mtd_to_nand(mtd);
 	struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller);
-	struct sunxi_nand_hw_ecc *data = nand->ecc.priv;
 	u32 ecc_ctl;
 
 	ecc_ctl = readl(nfc->regs + NFC_REG_ECC_CTL);
 	ecc_ctl &= ~(NFC_ECC_MODE_MSK | NFC_ECC_PIPELINE |
 		     NFC_ECC_BLOCK_SIZE_MSK);
-	ecc_ctl |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION |
-		   NFC_ECC_PIPELINE;
+	ecc_ctl |= NFC_ECC_EN | NFC_ECC_MODE(nfc->ecc->mode) |
+		   NFC_ECC_EXCEPTION | NFC_ECC_PIPELINE;
 
 	if (nand->ecc.size == 512)
 		ecc_ctl |= NFC_ECC_BLOCK_512;
@@ -1671,9 +1672,9 @@ static const struct mtd_ooblayout_ops sunxi_nand_ooblayout_ops = {
 	.free = sunxi_nand_ooblayout_free,
 };
 
-static void sunxi_nand_hw_ecc_ctrl_cleanup(struct nand_ecc_ctrl *ecc)
+static void sunxi_nand_hw_ecc_ctrl_cleanup(struct sunxi_nfc *nfc)
 {
-	kfree(ecc->priv);
+	kfree(nfc->ecc);
 }
 
 static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
@@ -1685,7 +1686,6 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
 	struct nand_chip *nand = mtd_to_nand(mtd);
 	struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(nand);
 	struct sunxi_nfc *nfc = to_sunxi_nfc(sunxi_nand->nand.controller);
-	struct sunxi_nand_hw_ecc *data;
 	int nsectors;
 	int ret;
 	int i;
@@ -1722,8 +1722,8 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
 	if (ecc->size != 512 && ecc->size != 1024)
 		return -EINVAL;
 
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
-	if (!data)
+	nfc->ecc = kzalloc(sizeof(*nfc->ecc), GFP_KERNEL);
+	if (!nfc->ecc)
 		return -ENOMEM;
 
 	/* Prefer 1k ECC chunk over 512 ones */
@@ -1750,7 +1750,7 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
 		goto err;
 	}
 
-	data->mode = i;
+	nfc->ecc->mode = i;
 
 	/* HW ECC always request ECC bytes for 1024 bytes blocks */
 	ecc->bytes = DIV_ROUND_UP(ecc->strength * fls(8 * 1024), 8);
@@ -1768,7 +1768,6 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
 	ecc->read_oob = sunxi_nfc_hw_ecc_read_oob;
 	ecc->write_oob = sunxi_nfc_hw_ecc_write_oob;
 	mtd_set_ooblayout(mtd, &sunxi_nand_ooblayout_ops);
-	ecc->priv = data;
 
 	if (nfc->dmac) {
 		ecc->read_page = sunxi_nfc_hw_ecc_read_page_dma;
@@ -1789,16 +1788,16 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct mtd_info *mtd,
 	return 0;
 
 err:
-	kfree(data);
+	kfree(nfc->ecc);
 
 	return ret;
 }
 
-static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc)
+static void sunxi_nand_ecc_cleanup(struct sunxi_nfc *nfc)
 {
-	switch (ecc->mode) {
+	switch (nfc->ecc->mode) {
 	case NAND_ECC_HW:
-		sunxi_nand_hw_ecc_ctrl_cleanup(ecc);
+		sunxi_nand_hw_ecc_ctrl_cleanup(nfc);
 		break;
 	case NAND_ECC_NONE:
 	default:
@@ -1980,7 +1979,7 @@ static void sunxi_nand_chips_cleanup(struct sunxi_nfc *nfc)
 		chip = list_first_entry(&nfc->chips, struct sunxi_nand_chip,
 					node);
 		nand_release(&chip->nand);
-		sunxi_nand_ecc_cleanup(&chip->nand.ecc);
+		sunxi_nand_ecc_cleanup(nfc);
 		list_del(&chip->node);
 	}
 }
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index d4718dcef753..afe75e707e2c 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -279,7 +279,6 @@ static const struct nand_ecc_caps __name = {			\
  * @prepad:	padding information for syndrome based ECC generators
  * @postpad:	padding information for syndrome based ECC generators
  * @options:	ECC specific options (see NAND_ECC_XXX flags defined above)
- * @priv:	pointer to private ECC control data
  * @calc_buf:	buffer for calculated ECC, size is oobsize.
  * @code_buf:	buffer for ECC read from flash, size is oobsize.
  * @hwctl:	function to control hardware ECC generator. Must only
@@ -331,7 +330,6 @@ struct nand_ecc_ctrl {
 	int prepad;
 	int postpad;
 	unsigned int options;
-	void *priv;
 	u8 *calc_buf;
 	u8 *code_buf;
 	void (*hwctl)(struct nand_chip *chip, int mode);
-- 
2.19.1


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