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cpufreq: mediatek-hw: Don't error out if supply is not found
devm_regulator_get_optional() returns -ENODEV if no supply can be found. By introducing its usage, commit788715b5f2
("cpufreq: mediatek-hw: Wait for CPU supplies before probing") caused the driver to fail probe if no supply was present in any of the CPU DT nodes. Use devm_regulator_get() instead since the CPUs do require supplies even if not described in the DT. It will gracefully return a dummy regulator if none is found in the DT node, allowing probe to succeed. Fixes:788715b5f2
("cpufreq: mediatek-hw: Wait for CPU supplies before probing") Reported-by: kernelci.org bot <bot@kernelci.org> Closes: https://linux.kernelci.org/test/case/id/65b0b169710edea22852a3fa/ Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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@ -312,7 +312,7 @@ static int mtk_cpufreq_hw_driver_probe(struct platform_device *pdev)
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return dev_err_probe(&pdev->dev, -EPROBE_DEFER,
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"Failed to get cpu%d device\n", cpu);
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cpu_reg = devm_regulator_get_optional(cpu_dev, "cpu");
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cpu_reg = devm_regulator_get(cpu_dev, "cpu");
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if (IS_ERR(cpu_reg))
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return dev_err_probe(&pdev->dev, PTR_ERR(cpu_reg),
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"CPU%d regulator get failed\n", cpu);
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