drivers: perf: marvell_cn10k: Fix hotplug callback leak in tad_pmu_init()
authorYuan Can <yuancan@huawei.com>
Tue, 15 Nov 2022 07:02:07 +0000 (07:02 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Dec 2022 12:31:51 +0000 (13:31 +0100)
commit7772f4de934123ccd7c7cdc1dc4e46fdd5d767fb
tree88f91a40ea032291552909be8d1e0b5a62bc111d
parent0823732f0aa06f8cd72d1325467baa56d118cf24
drivers: perf: marvell_cn10k: Fix hotplug callback leak in tad_pmu_init()

[ Upstream commit 973ae93d80d9d262f695eb485a1902b74c4b9098 ]

tad_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 26242b330093 ("bus:
arm-ccn: Prevent hotplug callback leak")

Fixes: 036a7584bede ("drivers: perf: Add LLC-TAD perf counter support")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221115070207.32634-3-yuancan@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/perf/marvell_cn10k_tad_pmu.c