From b4fccda57217949a3ff56bba18df57db760f111d Mon Sep 17 00:00:00 2001
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: Tue, 2 Jan 2018 11:25:31 +0000
Subject: [PATCH 047/105] arm_pmu: Use of_cpu_node_to_id helper
Git-commit: 66582787314ed0bd1dcac3f7a2b98ff71f3fb653
Patch-mainline: v4.16-rc1
References: fate#325865,fate#325861
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>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/perf/arm_pmu_platform.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index bbc64ee6dd96..26e112f7c018 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -81,19 +81,10 @@ 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);
--
2.11.0