From 8652920d2c00243e8a8ca91560a30488d95d9a1b Mon Sep 17 00:00:00 2001 From: Tao Zhou Date: Mon, 10 Feb 2025 15:28:37 +0800 Subject: drm/amdgpu: add mutex lock for cper ring Avoid the confliction between read and write of ring buffer. Signed-off-by: Tao Zhou Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h index add25975d4f6..d35d1ddac7cc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h @@ -64,6 +64,7 @@ struct amdgpu_cper { void *ring[CPER_MAX_ALLOWED_COUNT]; struct amdgpu_ring ring_buf; + struct mutex ring_lock; }; void amdgpu_cper_entry_fill_hdr(struct amdgpu_device *adev, -- cgit v1.2.3