Patch "drm/amdgpu: Initialize timestamp for some legacy SOCs" has been added to the 6.9-stable tree

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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);




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