[PATCH 4/6] i2c: npcm: Fix error detection

Heiko Schocher hs at nabladev.com
Wed Oct 22 07:16:27 CEST 2025


Hello Andrew,

On 21.10.25 18:08, Andrew Goodbody wrote:
> Testing an unisgned member of a struct to be <= 0 will only detect the
> case when it is 0. So correct this error test to a working version that
> will behave as expected.
> 
> Signed-off-by: Andrew Goodbody <andrew.goodbody at linaro.org>
> ---
>   drivers/i2c/npcm_i2c.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/npcm_i2c.c b/drivers/i2c/npcm_i2c.c
> index bff0d04f1a5ae2c261657a5776b38e4ab6ad4d28..d57237a6df167d579ab4b8d45f3989a8cac0fc68 100644
> --- a/drivers/i2c/npcm_i2c.c
> +++ b/drivers/i2c/npcm_i2c.c
> @@ -573,7 +573,7 @@ static int npcm_i2c_probe(struct udevice *dev)
>   		return ret;
>   	}
>   	bus->apb_clk = clk_get_rate(&clk);
> -	if (bus->apb_clk <= 0) {
> +	if (!bus->apb_clk || IS_ERR_VALUE(bus->apb_clk)) {
>   		printf("%s: fail to get rate\n", __func__);
>   		return -EINVAL;
>   	}
> 

Reviewed-by: Heiko Schocher <hs at nabladev.com>

Thanks!

bye,
Heiko
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