linux-kernel - Re: [PATCH 2/6] soc: qcom: ocmem: Use dev_err

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Date:   Mon, 8 May 2023 09:27:45 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Luca Weiss <luca@...tu.xyz>, ~postmarketos/upstreaming@...ts.sr.ht,
        phone-devel@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Brian Masney <masneyb@...tation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 2/6] soc: qcom: ocmem: Use dev_err_probe where appropriate



On 7.05.2023 11:12, Luca Weiss wrote:
> Use dev_err_probe in the driver probe function where useful, to simplify
> getting PTR_ERR and to ensure the underlying errors are included in the
> error message.
> 
> Signed-off-by: Luca Weiss <luca@...tu.xyz>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>  drivers/soc/qcom/ocmem.c | 23 ++++++++---------------
>  1 file changed, 8 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/soc/qcom/ocmem.c b/drivers/soc/qcom/ocmem.c
> index c3e78411c637..a11a955a1327 100644
> --- a/drivers/soc/qcom/ocmem.c
> +++ b/drivers/soc/qcom/ocmem.c
> @@ -317,18 +317,13 @@ static int ocmem_dev_probe(struct platform_device *pdev)
>  	ocmem->config = device_get_match_data(dev);
>  
>  	ret = devm_clk_bulk_get(dev, ARRAY_SIZE(ocmem_clks), ocmem_clks);
> -	if (ret) {
> -		if (ret != -EPROBE_DEFER)
> -			dev_err(dev, "Unable to get clocks\n");
> -
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(dev, ret, "Unable to get clocks\n");
>  
>  	ocmem->mmio = devm_platform_ioremap_resource_byname(pdev, "ctrl");
> -	if (IS_ERR(ocmem->mmio)) {
> -		dev_err(&pdev->dev, "Failed to ioremap ocmem_ctrl resource\n");
> -		return PTR_ERR(ocmem->mmio);
> -	}
> +	if (IS_ERR(ocmem->mmio))
> +		return dev_err_probe(&pdev->dev, PTR_ERR(ocmem->mmio),
> +				     "Failed to ioremap ocmem_ctrl resource\n");
>  
>  	ocmem->memory = platform_get_resource_byname(pdev, IORESOURCE_MEM,
>  						     "mem");
> @@ -341,16 +336,14 @@ static int ocmem_dev_probe(struct platform_device *pdev)
>  	WARN_ON(clk_set_rate(ocmem_clks[OCMEM_CLK_CORE_IDX].clk, 1000) < 0);
>  
>  	ret = clk_bulk_prepare_enable(ARRAY_SIZE(ocmem_clks), ocmem_clks);
> -	if (ret) {
> -		dev_info(ocmem->dev, "Failed to enable clocks\n");
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(ocmem->dev, ret, "Failed to enable clocks\n");
>  
>  	if (qcom_scm_restore_sec_cfg_available()) {
>  		dev_dbg(dev, "configuring scm\n");
>  		ret = qcom_scm_restore_sec_cfg(QCOM_SCM_OCMEM_DEV_ID, 0);
>  		if (ret) {
> -			dev_err(dev, "Could not enable secure configuration\n");
> +			dev_err_probe(dev, ret, "Could not enable secure configuration\n");
>  			goto err_clk_disable;
>  		}
>  	}
>