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arm_pmu: Use of_cpu_node_to_id helper

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Use the new generic helper, of_cpu_node_to_id(), to map a
a phandle to the logical CPU number while parsing the
PMU irq affinity.

Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Suzuki K Poulose 2018-01-02 11:25:31 +00:00 committed by Will Deacon
parent 52cac1103a
commit 6658278731
1 changed files with 3 additions and 12 deletions
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15
drivers/perf/arm_pmu_platform.c
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@ -82,19 +82,10 @@ static int pmu_parse_irq_affinity(struct device_node *node, int i)
return -EINVAL;
}
/* Now look up the logical CPU number */
for_each_possible_cpu(cpu) {
struct device_node *cpu_dn;
cpu_dn = of_cpu_device_node_get(cpu);
of_node_put(cpu_dn);
if (dn == cpu_dn)
break;
}
if (cpu >= nr_cpu_ids) {
cpu = of_cpu_node_to_id(dn);
if (cpu < 0) {
pr_warn("failed to find logical CPU for %s\n", dn->name);
cpu = nr_cpu_ids;
}
of_node_put(dn);