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Commit bc493a56 authored by Yang Jihong's avatar Yang Jihong Committed by Sasha Levin
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hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init()



[ Upstream commit 06226d12 ]

When perf_init_event() calls perf_try_init_event() to init pmu driver,
searches for the next pmu driver only when the return value is -ENOENT.
Therefore, hisi_ptt_pmu_event_init() needs to check the type at the
beginning of the function.
Otherwise, in the case of perf-task mode, perf_try_init_event() returns
-EOPNOTSUPP and skips subsequent pmu drivers, causes perf_init_event() to
fail.

Fixes: ff0de066 ("hwtracing: hisi_ptt: Add trace function support for HiSilicon PCIe Tune and Trace device")
Signed-off-by: default avatarYang Jihong <yangjihong1@huawei.com>
Reviewed-by: default avatarYicong Yang <yangyicong@hisilicon.com>
Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240108121906.3514820-1-yangjihong1@huawei.com


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent c609ce8b
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