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perf: arm_dsu: Fix hotplug callback leak in dsu_pmu_init()
[ Upstream commit facafab ] dsu_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path. Similar to the handling of arm_ccn_init() in commit 26242b3 ("bus: arm-ccn: Prevent hotplug callback leak") Fixes: 7520fa9 ("perf: ARM DynamIQ Shared Unit PMU support") Signed-off-by: Yuan Can <yuancan@huawei.com> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20221115070207.32634-2-yuancan@huawei.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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