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Re: [PATCH 3/4] wifi: ath9k: ahb: replace id_table with of

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On 21/05/2025 04:15, Rosen Penev wrote:
> -		.name = "qca955x_wmac",
> -		.driver_data = AR9300_DEVID_QCA955X,
> -	},
> -	{
> -		.name = "qca953x_wmac",
> -		.driver_data = AR9300_DEVID_AR953X,
> -	},
> -	{
> -		.name = "qca956x_wmac",
> -		.driver_data = AR9300_DEVID_QCA956X,
> -	},
> +static const struct of_device_id ath9k_of_match_table[] = {
> +	{ .compatible = "qca,ar9130-wmac", .data = (void *)AR5416_AR9100_DEVID },
> +	{ .compatible = "qca,ar9330-wmac", .data = (void *)AR9300_DEVID_AR9330 },
> +	{ .compatible = "qca,ar9340-wmac", .data = (void *)AR9300_DEVID_AR9340 },
> +	{ .compatible = "qca,qca9530-wmac", .data = (void *)AR9300_DEVID_AR953X },
> +	{ .compatible = "qca,qca9550-wmac", .data = (void *)AR9300_DEVID_QCA955X },
> +	{ .compatible = "qca,qca9560-wmac", .data = (void *)AR9300_DEVID_QCA956X },

Undocumented ABI.

Please run scripts/checkpatch.pl on the patches and fix reported
warnings. After that, run also 'scripts/checkpatch.pl --strict' on the
patches and (probably) fix more warnings. Some warnings can be ignored,
especially from --strict run, but the code here looks like it needs a
fix. Feel free to get in touch if the warning is not clear.


>  	{},
>  };
>  
> @@ -72,20 +55,16 @@ static const struct ath_bus_ops ath_ahb_bus_ops  = {
>  
>  static int ath_ahb_probe(struct platform_device *pdev)
>  {
> -	const struct platform_device_id *id = platform_get_device_id(pdev);
> +	const struct of_device_id *match;
>  	struct ieee80211_hw *hw;
>  	struct ath_softc *sc;
>  	struct ath_hw *ah;
>  	void __iomem *mem;
>  	char hw_name[64];
> +	u16 dev_id;
>  	int irq;
>  	int ret;
>  
> -	if (!dev_get_platdata(&pdev->dev)) {
> -		dev_err(&pdev->dev, "no platform data specified\n");
> -		return -EINVAL;
> -	}
> -
>  	mem = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(mem)) {
>  		dev_err(&pdev->dev, "ioremap failed\n");
> @@ -118,7 +97,9 @@ static int ath_ahb_probe(struct platform_device *pdev)
>  		goto err_free_hw;
>  	}
>  
> -	ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
> +	match = of_match_device(ath9k_of_match_table, &pdev->dev);

There is a wrapper for getting data, use it.

> +	dev_id = (uintptr_t)match->data;

And dev_id is enum? Then you want kernel_ulong_t.




Best regards,
Krzysztof




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