Hi Greg and Shannon,
b265da5a45ce60bd3d7505cc0eaa6cfba50946a1
arm64: perf: fix unassigned cpu_pmu->plat_device when probing PMU PPIs
This looks applicable to stable-4.1, that fix "No PMU device registered"
when use "perf list hw"，which was introduced by commit d795ef9aa831("arm64:
perf: don't warn about missing interrupt-affinity property for PPIs").
It can be applyed to 4.1 cleanly. What do you think?
Thanks
Kefeng Wang
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