drm/amdgpu: Initialize timestamp for some legacy SOCs

From Ma Jun
e55077badb9054630856cbefc099ad148a446648 in linux-6.6.y/6.6.39
2e55bcf3d742a4946d862b86e39e75a95cc6f1c0 in mainline linux

diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.c b/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.c
index 10d43e7..10b1f65 100644 (file)
--- a/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.c
+++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.c
@@ -446,6 +446,14 @@ void amdgpu_irq_dispatch(struct amdgpu_device *adev,
 
        entry.ih = ih;
        entry.iv_entry = (const uint32_t *)&ih->ring[ring_index];
+
+       /*
+        * timestamp is not supported on some legacy SOCs (cik, cz, iceland,
+        * si and tonga), so initialize timestamp and timestamp_src to 0
+        */
+       entry.timestamp = 0;
+       entry.timestamp_src = 0;
+
        amdgpu_ih_decode_iv(adev, &entry);
 
        trace_amdgpu_iv(ih - &adev->irq.ih, &entry);