coresight: of: Use of_cpu_node_to_id helper
Reuse the new generic helper, of_cpu_node_to_id() to map a given CPU phandle to a logical CPU number. Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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@ -104,26 +104,17 @@ static int of_coresight_alloc_memory(struct device *dev,
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int of_coresight_get_cpu(const struct device_node *node)
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int of_coresight_get_cpu(const struct device_node *node)
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{
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{
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int cpu;
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int cpu;
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bool found;
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struct device_node *dn;
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struct device_node *dn, *np;
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dn = of_parse_phandle(node, "cpu", 0);
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dn = of_parse_phandle(node, "cpu", 0);
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/* Affinity defaults to CPU0 */
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/* Affinity defaults to CPU0 */
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if (!dn)
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if (!dn)
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return 0;
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return 0;
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cpu = of_cpu_node_to_id(dn);
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for_each_possible_cpu(cpu) {
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np = of_cpu_device_node_get(cpu);
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found = (dn == np);
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of_node_put(np);
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if (found)
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break;
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}
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of_node_put(dn);
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of_node_put(dn);
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/* Affinity to CPU0 if no cpu nodes are found */
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/* Affinity to CPU0 if no cpu nodes are found */
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return found ? cpu : 0;
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return (cpu < 0) ? 0 : cpu;
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}
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}
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EXPORT_SYMBOL_GPL(of_coresight_get_cpu);
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EXPORT_SYMBOL_GPL(of_coresight_get_cpu);
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