This is a note to let you know that I've just added the patch titled
drm/amdgpu: Initialize timestamp for some legacy SOCs
to the 6.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-initialize-timestamp-for-some-legacy-socs.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 77ee54fd5060bb61d7a6e469fb075a1fa14d111d
Author: Ma Jun <Jun.Ma2@xxxxxxx>
Date: Mon Apr 22 10:07:51 2024 +0800
drm/amdgpu: Initialize timestamp for some legacy SOCs
[ Upstream commit 2e55bcf3d742a4946d862b86e39e75a95cc6f1c0 ]
Initialize the interrupt timestamp for some legacy SOCs
to fix the coverity issue "Uninitialized scalar variable"
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
Suggested-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index 7e6d09730e6d3..665c63f552787 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -445,6 +445,14 @@ 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);
