RE: [PATCH V2 08/18] i2c: imx-lpi2c: add debug message when i2c peripheral clk doesn't work

[Aisheng Dong]

> From: Clark Wang <xiaoning.wang@xxxxxxx>
> Sent: Tuesday, April 6, 2021 7:33 PM
> 
> add debug message when i2c peripheral clk rate is 0, then directly return
> -EINVAL.
> 
> Signed-off-by: Clark Wang <xiaoning.wang@xxxxxxx>

You sign-off should be put after the original patch author

> Signed-off-by: Gao Pan <pandy.gao@xxxxxxx>
> Reviewed-by: Andy Duan <fugang.duan@xxxxxxx>

Drop the original review when they're significant changes

> ---
> V2 changes:
>  - Add my signed-off.
> ---
>  drivers/i2c/busses/i2c-imx-lpi2c.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c
> b/drivers/i2c/busses/i2c-imx-lpi2c.c
> index 333209ba81c1..dfec334712c2 100644
> --- a/drivers/i2c/busses/i2c-imx-lpi2c.c
> +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
> @@ -210,6 +210,11 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct
> *lpi2c_imx)
>  	lpi2c_imx_set_mode(lpi2c_imx);
> 
>  	clk_rate = clk_get_rate(lpi2c_imx->clk_per);
> +	if (!clk_rate) {
> +		dev_dbg(&lpi2c_imx->adapter.dev, "clk_per rate is 0\n");

s/dev_dbg/dev_err

> +		return -EINVAL;
> +	}
> +
>  	if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST)
>  		filt = 0;
>  	else
> --
> 2.25.1