Re: [PATCH 1/3] usb: typec: tipd: add error message for vendor ID read failure

[Heikki Krogerus]

On Wed, May 13, 2026 at 11:58:48PM +0530, Radhey Shyam Pandey wrote:
> Log when the vendor ID read fails or returns zero, including the I2C error
> code and register value, to ease probe diagnostics.
> 
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxx>
> ---
>  drivers/usb/typec/tipd/core.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index 43faec794b95..b282366b5326 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -1744,7 +1744,7 @@ static int tps6598x_probe(struct i2c_client *client)
>  	struct tps6598x *tps;
>  	struct fwnode_handle *fwnode;
>  	u32 status;
> -	u32 vid;
> +	u32 vid = 0;

Why is this necessary?

>  	int ret;
>  
>  	data = i2c_get_match_data(client);
> @@ -1772,8 +1772,11 @@ static int tps6598x_probe(struct i2c_client *client)
>  
>  	if (!device_is_compatible(tps->dev, "ti,tps25750")) {
>  		ret = tps6598x_read32(tps, TPS_REG_VID, &vid);
> -		if (ret < 0 || !vid)
> +		if (ret < 0 || !vid) {
> +			dev_err(tps->dev, "failed to read vendor ID: %d, vid: %#x\n",
> +				ret, vid);
>  			return -ENODEV;
> +		}
>  	}
>  
>  	/*
> -- 
> 2.44.4

-- 
heikki