Commit e16e4c70 authored by Yang Jihong's avatar Yang Jihong Committed by Ran Zhou
Browse files

hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init()

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I92NZO



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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>
parent ecb0378f
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