Re: [PATCH v3 2/2] media: ov2680: Allow probing if link-frequencies is absent

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Hi,

On 3/28/24 11:44 PM, Fabio Estevam wrote:
> From: Fabio Estevam <festevam@xxxxxxx>
> 
> Since commit 63b0cd30b78e ("media: ov2680: Add bus-cfg / endpoint
> property verification") the ov2680 no longer probes on a imx7s-warp7:
> 
> ov2680 1-0036: error -EINVAL: supported link freq 330000000 not found
> ov2680 1-0036: probe with driver ov2680 failed with error -22
> 
> As the 'link-frequencies' property is not mandatory, allow the probe
> to succeed by skipping the link-frequency verification when the
> property is absent.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 63b0cd30b78e ("media: ov2680: Add bus-cfg / endpoint property verification")
> Signed-off-by: Fabio Estevam <festevam@xxxxxxx>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Regards,

Hans



> ---
> Changes since v2:
> - Fix memory leak and print a warning if 'link-frequencies' is absent. (Laurent)
> 
>  drivers/media/i2c/ov2680.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
> index 3e3b7c2b492c..a857763c7984 100644
> --- a/drivers/media/i2c/ov2680.c
> +++ b/drivers/media/i2c/ov2680.c
> @@ -1123,18 +1123,23 @@ static int ov2680_parse_dt(struct ov2680_dev *sensor)
>  		goto out_free_bus_cfg;
>  	}
>  
> +	if (!bus_cfg.nr_of_link_frequencies) {
> +		dev_warn(dev, "Consider passing 'link-frequencies' in DT\n");
> +		goto skip_link_freq_validation;
> +	}
> +
>  	for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
>  		if (bus_cfg.link_frequencies[i] == sensor->link_freq[0])
>  			break;
>  
> -	if (bus_cfg.nr_of_link_frequencies == 0 ||
> -	    bus_cfg.nr_of_link_frequencies == i) {
> +	if (bus_cfg.nr_of_link_frequencies == i) {
>  		ret = dev_err_probe(dev, -EINVAL,
>  				    "supported link freq %lld not found\n",
>  				    sensor->link_freq[0]);
>  		goto out_free_bus_cfg;
>  	}
>  
> +skip_link_freq_validation:
>  	ret = 0;
>  out_free_bus_cfg:
>  	v4l2_fwnode_endpoint_free(&bus_cfg);





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