[PATCH v3 6/7] mtd: rawnand: ams-delta: Simplify pointer resolution on read/write

Janusz Krzysztofik
2018-08-13T22:34:47Z

Simplify data read/write sub-functions by making them accept private
structure pointer instead of resolving it again from mtd_info.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
---
drivers/mtd/nand/raw/ams-delta.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/mtd/nand/raw/ams-delta.c b/drivers/mtd/nand/raw/ams-delta.c
index 5f9180fe4f8b..59fc417e8fa9 100644
--- a/drivers/mtd/nand/raw/ams-delta.c
+++ b/drivers/mtd/nand/raw/ams-delta.c
@@ -73,10 +73,9 @@ static const struct mtd_partition partition_info[] = {
.size = 3 * SZ_256K },
};

-static void ams_delta_write_next_byte(struct mtd_info *mtd, u_char byte)
+static void ams_delta_write_next_byte(struct ams_delta_nand *priv, u_char byte)
{
- struct nand_chip *this = mtd_to_nand(mtd);
- struct ams_delta_nand *priv = nand_get_controller_data(this);
+ struct nand_chip *this = &priv->nand_chip;

writew(byte, this->IO_ADDR_W);

@@ -85,10 +84,8 @@ static void ams_delta_write_next_byte(struct mtd_info *mtd, u_char byte)
gpiod_set_value(priv->gpiod_nwe, 1);
}

-static void ams_delta_write_byte(struct mtd_info *mtd, u_char byte)
+static void ams_delta_write_byte(struct ams_delta_nand *priv, u_char byte)
{
- struct nand_chip *this = mtd_to_nand(mtd);
- struct ams_delta_nand *priv = nand_get_controller_data(this);
void __iomem *io_base = priv->io_base;

if (priv->data_in) {
@@ -96,13 +93,12 @@ static void ams_delta_write_byte(struct mtd_info *mtd, u_char byte)
priv->data_in = false;
}

- ams_delta_write_next_byte(mtd, byte);
+ ams_delta_write_next_byte(priv, byte);
}

-static u_char ams_delta_read_next_byte(struct mtd_info *mtd)
+static u_char ams_delta_read_next_byte(struct ams_delta_nand *priv)
{
- struct nand_chip *this = mtd_to_nand(mtd);
- struct ams_delta_nand *priv = nand_get_controller_data(this);
+ struct nand_chip *this = &priv->nand_chip;
u_char res;

gpiod_set_value(priv->gpiod_nre, 0);
@@ -126,30 +122,34 @@ static u_char ams_delta_read_byte(struct mtd_info *mtd)
priv->data_in = true;
}

- return ams_delta_read_next_byte(mtd);
+ return ams_delta_read_next_byte(priv);
}

static void ams_delta_write_buf(struct mtd_info *mtd, const u_char *buf,
int len)
{
+ struct nand_chip *this = mtd_to_nand(mtd);
+ struct ams_delta_nand *priv = nand_get_controller_data(this);
int i = 0;

if (len > 0)
- ams_delta_write_byte(mtd, buf[i++]);
+ ams_delta_write_byte(priv, buf[i++]);

while (i < len)
- ams_delta_write_next_byte(mtd, buf[i++]);
+ ams_delta_write_next_byte(priv, buf[i++]);
}

static void ams_delta_read_buf(struct mtd_info *mtd, u_char *buf, int len)
{
+ struct nand_chip *this = mtd_to_nand(mtd);
+ struct ams_delta_nand *priv = nand_get_controller_data(this);
int i = 0;

if (len > 0)
buf[i++] = ams_delta_read_byte(mtd);

while (i < len)
- buf[i++] = ams_delta_read_next_byte(mtd);
+ buf[i++] = ams_delta_read_next_byte(priv);
}

/*
@@ -173,7 +173,7 @@ static void ams_delta_hwcontrol(struct mtd_info *mtd, int cmd,
}

if (cmd != NAND_CMD_NONE)
- ams_delta_write_byte(mtd, cmd);
+ ams_delta_write_byte(priv, cmd);
}

static int ams_delta_nand_ready(struct mtd_info *mtd)
--
2.16.4