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Message-ID: <9de11f54-6f25-6945-b42c-bc3632563a56@ideasonboard.com>
Date:   Tue, 10 Oct 2023 09:06:28 +0530
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Subject: Re: [PATCH 5/5] media: i2c: imx335: Improve configuration error
 reporting
To:     Kieran Bingham <kieran.bingham@ideasonboard.com>,
        linux-media@vger.kernel.org, devicetree@vger.kernel.org
Cc:     Sakari Ailus <sakari.ailus@linux.intel.com>,
        "Paul J. Murphy" <paul.j.murphy@intel.com>,
        Daniele Alessandrelli <daniele.alessandrelli@intel.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        open list <linux-kernel@vger.kernel.org>
References: <20231010005126.3425444-1-kieran.bingham@ideasonboard.com>
 <20231010005126.3425444-6-kieran.bingham@ideasonboard.com>
Content-Language: en-US
From:   Umang Jain <umang.jain@ideasonboard.com>
In-Reply-To: <20231010005126.3425444-6-kieran.bingham@ideasonboard.com>
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Hi Kieran,

Thank you for the patch.

On 10/10/23 6:21 AM, Kieran Bingham wrote:
> The existing imx335_parse_hw_config function has two paths
> that can be taken without reporting to the user the reason
> for failing to accept the hardware configuration.
>
> Extend the error reporting paths to identify failures when
> probing the device.
>
> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
> ---
>   drivers/media/i2c/imx335.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/i2c/imx335.c b/drivers/media/i2c/imx335.c
> index 1a34b2a43718..753e5c39e0fa 100644
> --- a/drivers/media/i2c/imx335.c
> +++ b/drivers/media/i2c/imx335.c
> @@ -864,8 +864,10 @@ static int imx335_parse_hw_config(struct imx335 *imx335)
>   	}
>   
>   	ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
> -	if (!ep)
> +	if (!ep) {
> +		dev_err(imx335->dev, "Failed to get next endpoint");

missing '\n' at the end.
>   		return -ENXIO;
> +	}
>   
>   	ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
>   	fwnode_handle_put(ep);
> @@ -890,6 +892,8 @@ static int imx335_parse_hw_config(struct imx335 *imx335)
>   		if (bus_cfg.link_frequencies[i] == IMX335_LINK_FREQ)
>   			goto done_endpoint_free;
>   
> +	dev_err(imx335->dev, "no compatible link frequencies found");

Ditto.

Other than that,

Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>

> +
>   	ret = -EINVAL;
>   
>   done_endpoint_free: