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Message-ID: <90da3361-6b11-7a1c-a845-af33ba03a686@linaro.org>
Date:   Mon, 14 Aug 2023 12:04:51 +0200
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Subject: Re: [PATCH v7 2/5] phy: qcom-m31: Introduce qcom,m31 USB phy driver
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To:     Varadarajan Narayanan <quic_varada@quicinc.com>, agross@kernel.org,
        andersson@kernel.org, konrad.dybcio@linaro.org, vkoul@kernel.org,
        kishon@kernel.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
        catalin.marinas@arm.com, will@kernel.org, p.zabel@pengutronix.de,
        arnd@arndb.de, geert+renesas@glider.be, nfraprado@collabora.com,
        rafal@milecki.pl, peng.fan@nxp.com, quic_srichara@quicinc.com,
        linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
References: <cover.1691660905.git.quic_varada@quicinc.com>
 <b17b55b2ff2277bb9bfa99acdb2f98ed420dfb6e.1691660905.git.quic_varada@quicinc.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <b17b55b2ff2277bb9bfa99acdb2f98ed420dfb6e.1691660905.git.quic_varada@quicinc.com>
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On 10/08/2023 11:56, Varadarajan Narayanan wrote:
> Add the M31 USB2 phy driver.
> 
> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
> ---

...

> +static int m31usb_phy_probe(struct platform_device *pdev)
> +{
> +	struct phy_provider *phy_provider;
> +	const struct m31_priv_data *data;
> +	struct device *dev = &pdev->dev;
> +	struct m31usb_phy *qphy;
> +
> +	qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
> +	if (!qphy)
> +		return -ENOMEM;
> +
> +	qphy->base = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(qphy->base))
> +		return PTR_ERR(qphy->base);
> +
> +	qphy->reset = devm_reset_control_get_exclusive_by_index(dev, 0);
> +	if (IS_ERR(qphy->reset))
> +		return PTR_ERR(qphy->reset);
> +
> +	qphy->clk = devm_clk_get(dev, NULL);
> +	if (IS_ERR(qphy->clk))
> +		return dev_err_probe(dev, PTR_ERR(qphy->clk),
> +						"failed to get clk\n");

This looks misaligned.

> +
> +	data = of_device_get_match_data(dev);
> +	qphy->regs		= data->regs;
> +	qphy->nregs		= data->nregs;
> +	qphy->ulpi_mode		= data->ulpi_mode;
> +
> +	qphy->phy = devm_phy_create(dev, NULL, &m31usb_phy_gen_ops);
> +	if (IS_ERR(qphy->phy))
> +		return dev_err_probe(dev, PTR_ERR(qphy->phy),
> +						"failed to create phy\n");

Ditto... and in other places.

> +
> +	qphy->vreg = devm_regulator_get(dev, "vdda-phy");
> +	if (IS_ERR(qphy->vreg))
> +		return dev_err_probe(dev, PTR_ERR(qphy->phy),
> +						"failed to get vreg\n");
> +
> +	phy_set_drvdata(qphy->phy, qphy);
> +
> +	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> +	if (!IS_ERR(phy_provider))
> +		dev_info(dev, "Registered M31 USB phy\n");

Drop simple success messages. Kernel has other means to do it.

Best regards,
Krzysztof