From: James Zhu <James.Zhu@amd.com>
Date: Wed, 19 May 2021 15:26:32 +0000 (-0400)
Subject: drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
X-Git-Tag: v5.4.124~145
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f0780e96a6e2897114feaa699b93a9b67906f567;p=thirdparty%2Fkernel%2Fstable.git

drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate

commit 0c6013377b4027e69d8f3e63b6bf556b6cb87802 upstream.

Add cancel_delayed_work_sync before set power gating state
to avoid race condition issue when power gating.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
index cd2cbe760e883..82327ee96f953 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
@@ -293,6 +293,8 @@ static int vcn_v2_0_hw_fini(void *handle)
 	struct amdgpu_ring *ring = &adev->vcn.inst->ring_dec;
 	int i;
 
+	cancel_delayed_work_sync(&adev->vcn.idle_work);
+
 	if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) ||
 	    (adev->vcn.cur_state != AMD_PG_STATE_GATE &&
 	      RREG32_SOC15(VCN, 0, mmUVD_STATUS)))