drm/amdgpu/vcn: fix race condition issue for dpg unpause mode switch

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Couldn't only rely on enc fence to decide switching to dpg unpaude mode.
Since a enc thread may not schedule a fence in time during multiple
threads running situation.

v3: 1. Rename enc_submission_cnt to dpg_enc_submission_cnt
    2. Add dpg_enc_submission_cnt check in idle_work_handler

v4:  Remove extra counter check, and reduce counter before idle
    work schedule

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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James Zhu 2020-02-10 12:52:16 -05:00 • committed by Alex Deucher

parent bd718638b8

commit e3b41d82da

2 changed files with 22 additions and 11 deletions

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34

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c

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1

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h

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