Re: [PATCH 2/5] i2c: mediatek: remove useless code and replace definitions

Sean Wang
2018-12-04T20:37:08Z

<qii.wang@mediatek.com> 於 2018年12月3日 週一 上午5:40寫道：
>
> From: qii wang <qii.wang@mediatek.com>
>
> Completion_done is useless when we don't use its return value,
> so we remove it. Different speeds have been defined by macros,
> so we use macros definitions.
>
> Signed-off-by: qii wang <qii.wang@mediatek.com>
Reviewed-by: Sean Wang <sean.wang@kernel.org>

> ---
> drivers/i2c/busses/i2c-mt65xx.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
> index a74ef76..660de1e 100644
> --- a/drivers/i2c/busses/i2c-mt65xx.c
> +++ b/drivers/i2c/busses/i2c-mt65xx.c
> @@ -456,7 +456,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs,
>
> control_reg = readw(i2c->base + OFFSET_CONTROL) &
> ~(I2C_CONTROL_DIR_CHANGE | I2C_CONTROL_RS);
> - if ((i2c->speed_hz > 400000) || (left_num >= 1))
> + if ((i2c->speed_hz > MAX_FS_MODE_SPEED) || (left_num >= 1))
> control_reg |= I2C_CONTROL_RS;
>
> if (i2c->op == I2C_MASTER_WRRD)
> @@ -465,7 +465,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs,
> writew(control_reg, i2c->base + OFFSET_CONTROL);
>
> /* set start condition */
> - if (i2c->speed_hz <= 100000)
> + if (i2c->speed_hz <= I2C_DEFAULT_SPEED)
> writew(I2C_ST_START_CON, i2c->base + OFFSET_EXT_CONF);
> else
> writew(I2C_FS_START_CON, i2c->base + OFFSET_EXT_CONF);
> @@ -642,8 +642,6 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs,
> return -ETIMEDOUT;
> }
>
> - completion_done(&i2c->msg_complete);
> -
> if (i2c->irq_stat & (I2C_HS_NACKERR | I2C_ACKERR)) {
> dev_dbg(i2c->dev, "addr: %x, transfer ACK error\n", msgs->addr);
> mtk_i2c_init_hw(i2c);
> --
> 1.7.9.5
>
>
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