[PATCH v4] i2c: imx-lpi2c: return -EINVAL when i2c peripheral clk doesn't work

[Andi Shyti]

Hi Carlos,

> --- a/drivers/i2c/busses/i2c-imx-lpi2c.c
> +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
> @@ -209,6 +209,9 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
>  	lpi2c_imx_set_mode(lpi2c_imx);
>  
>  	clk_rate = clk_get_rate(lpi2c_imx->clks[0].clk);
> +	if (!clk_rate)
> +		return -EINVAL;
> +

this is a very unlikely to happen and generally not really
appreciated.

If you got so far it's basically impossible that clk_rate is '0'.
Uwe asked you in v2 if you actually had such case.

I don't have a strong opinion, thoug... I would drop this patch
unless Dong is OK with it and I can accept it with his ack.

Andi

>  	if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST)
>  		filt = 0;
>  	else
> -- 
> 2.34.1
>