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Message-ID: <CAD6G_RTGs4ctyk1pq7XW9XDCsyNZxWzT8duTQMoTDm-KXxTu2Q@mail.gmail.com>
Date: Fri, 4 Sep 2015 16:58:13 +0530
From: Jagan Teki <jteki@...nedev.com>
To: "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Jagan Teki <jteki@...nedev.com>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
Han Xu <han.xu@...escale.com>
Subject: Re: [PATCH 2/3] mtd: spi-nor: Zap unneeded write_enable from write_reg
On 19 August 2015 at 15:26, Jagan Teki <jteki@...nedev.com> wrote:
> Since write enabling shall do with buf and len without
> need of exctra write_enable argument, hence removed the
> same from write_reg.
>
> Signed-off-by: Jagan Teki <jteki@...nedev.com>
> Cc: David Woodhouse <dwmw2@...radead.org>
> Cc: Brian Norris <computersforpeace@...il.com>
> Cc: Han Xu <han.xu@...escale.com>
> ---
> drivers/mtd/devices/m25p80.c | 3 +--
> drivers/mtd/spi-nor/fsl-quadspi.c | 3 +--
> drivers/mtd/spi-nor/spi-nor.c | 16 ++++++++--------
> include/linux/mtd/spi-nor.h | 3 +--
> 4 files changed, 11 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
> index 9cd3631..ab69d2d 100644
> --- a/drivers/mtd/devices/m25p80.c
> +++ b/drivers/mtd/devices/m25p80.c
> @@ -62,8 +62,7 @@ static int m25p_cmdsz(struct spi_nor *nor)
> return 1 + nor->addr_width;
> }
>
> -static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
> - int wr_en)
> +static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
> {
> struct m25p *flash = nor->priv;
> struct spi_device *spi = flash->spi;
> diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
> index d32b7e0..2c8c578 100644
> --- a/drivers/mtd/spi-nor/fsl-quadspi.c
> +++ b/drivers/mtd/spi-nor/fsl-quadspi.c
> @@ -798,8 +798,7 @@ static int fsl_qspi_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
> return 0;
> }
>
> -static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
> - int write_enable)
> +static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
> {
> struct fsl_qspi *q = nor->priv;
> int ret;
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index 3e198b4..f954d03 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -143,7 +143,7 @@ static inline int spi_nor_read_dummy_cycles(struct spi_nor *nor)
> static inline int write_sr(struct spi_nor *nor, u8 val)
> {
> nor->cmd_buf[0] = val;
> - return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0);
> + return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1);
> }
>
> /*
> @@ -152,7 +152,7 @@ static inline int write_sr(struct spi_nor *nor, u8 val)
> */
> static inline int write_enable(struct spi_nor *nor)
> {
> - return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0);
> + return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0);
> }
>
> /*
> @@ -160,7 +160,7 @@ static inline int write_enable(struct spi_nor *nor)
> */
> static inline int write_disable(struct spi_nor *nor)
> {
> - return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0, 0);
> + return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0);
> }
>
> static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
> @@ -186,7 +186,7 @@ static inline int set_4byte(struct spi_nor *nor, struct flash_info *info,
> write_enable(nor);
>
> cmd = enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B;
> - status = nor->write_reg(nor, cmd, NULL, 0, 0);
> + status = nor->write_reg(nor, cmd, NULL, 0);
> if (need_wren)
> write_disable(nor);
>
> @@ -194,7 +194,7 @@ static inline int set_4byte(struct spi_nor *nor, struct flash_info *info,
> default:
> /* Spansion style */
> nor->cmd_buf[0] = enable << 7;
> - return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1, 0);
> + return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1);
> }
> }
> static inline int spi_nor_sr_ready(struct spi_nor *nor)
> @@ -265,7 +265,7 @@ static int erase_chip(struct spi_nor *nor)
> {
> dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10));
>
> - return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0);
> + return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0);
> }
>
> static int spi_nor_lock_and_prep(struct spi_nor *nor, enum spi_nor_ops ops)
> @@ -894,7 +894,7 @@ static int write_sr_cr(struct spi_nor *nor, u16 val)
> nor->cmd_buf[0] = val & 0xff;
> nor->cmd_buf[1] = (val >> 8);
>
> - return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2, 0);
> + return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2);
> }
>
> static int spansion_quad_enable(struct spi_nor *nor)
> @@ -936,7 +936,7 @@ static int micron_quad_enable(struct spi_nor *nor)
>
> /* set EVCR, enable quad I/O */
> nor->cmd_buf[0] = val & ~EVCR_QUAD_EN_MICRON;
> - ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1, 0);
> + ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1);
> if (ret < 0) {
> dev_err(nor->dev, "error while writing EVCR register\n");
> return ret;
> diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
> index e540952..c5a58c4 100644
> --- a/include/linux/mtd/spi-nor.h
> +++ b/include/linux/mtd/spi-nor.h
> @@ -182,8 +182,7 @@ struct spi_nor {
> int (*write_xfer)(struct spi_nor *nor, struct spi_nor_xfer_cfg *cfg,
> u8 *buf, size_t len);
> int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
> - int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
> - int write_enable);
> + int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
>
> int (*read)(struct spi_nor *nor, loff_t from,
> size_t len, size_t *retlen, u_char *read_buf);
> --
> 1.9.1
>
Ping
--
Jagan | openedev.
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