cpufreq: exynos: Use simple approach to asses if cpu cooling can be used
Commit: e725d26c48
provided possibility to
use device tree to asses if cpu can be used as cooling device. Since the
code was somewhat awkward, simpler approach has been proposed.
Test HW: Exynos 4412 - Odroid U3.
Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
parent
42b696e808
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@ -159,7 +159,7 @@ static struct cpufreq_driver exynos_driver = {
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static int exynos_cpufreq_probe(struct platform_device *pdev)
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{
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struct device_node *cpus, *np;
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struct device_node *cpu0;
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int ret = -EINVAL;
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exynos_info = kzalloc(sizeof(*exynos_info), GFP_KERNEL);
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@ -206,28 +206,19 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
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if (ret)
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goto err_cpufreq_reg;
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cpus = of_find_node_by_path("/cpus");
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if (!cpus) {
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pr_err("failed to find cpus node\n");
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cpu0 = of_get_cpu_node(0, NULL);
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if (!cpu0) {
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pr_err("failed to find cpu0 node\n");
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return 0;
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}
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np = of_get_next_child(cpus, NULL);
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if (!np) {
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pr_err("failed to find cpus child node\n");
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of_node_put(cpus);
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return 0;
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}
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if (of_find_property(np, "#cooling-cells", NULL)) {
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cdev = of_cpufreq_cooling_register(np,
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if (of_find_property(cpu0, "#cooling-cells", NULL)) {
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cdev = of_cpufreq_cooling_register(cpu0,
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cpu_present_mask);
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if (IS_ERR(cdev))
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pr_err("running cpufreq without cooling device: %ld\n",
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PTR_ERR(cdev));
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}
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of_node_put(np);
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of_node_put(cpus);
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return 0;
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