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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)
committerWill Deacon <will@kernel.org>
Tue, 15 Nov 2022 13:45:02 +0000 (13:45 +0000)
commit973ae93d80d9d262f695eb485a1902b74c4b9098
tree98677729b80358600a94554949efe991582b9317
parentfacafab7611f7b872c6b9eeaff53461ef11f482e
drivers: perf: marvell_cn10k: Fix hotplug callback leak in tad_pmu_init()

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>
drivers/perf/marvell_cn10k_tad_pmu.c