[PATCH v4 4/4] drm/amdgpu/vcn: during dpc recovery will corrupt VCPU buffer

[Ce Sun]

err_event_athub and dpc recovery will corrupt VCPU buffer,
so we need to restore fw data and clear buffer in amdgpu_vcn_resume()

Signed-off-by: Ce Sun <cesun102 at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index 8d8b39e6d197..d8cd5f08ef05 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -353,9 +353,9 @@ int amdgpu_vcn_suspend(struct amdgpu_device *adev, int i)
 
 	cancel_delayed_work_sync(&adev->vcn.inst[i].idle_work);
 
-	/* err_event_athub will corrupt VCPU buffer, so we need to
+	/* err_event_athub and dpc recovery will corrupt VCPU buffer, so we need to
 	 * restore fw data and clear buffer in amdgpu_vcn_resume() */
-	if (in_ras_intr)
+	if (in_ras_intr || adev->pcie_reset_ctx.in_link_reset)
 		return 0;
 
 	return amdgpu_vcn_save_vcpu_bo_inst(adev, i);
-- 
2.34.1