[PATCH v2] drm/amdkfd: Initialize kfd_gpu_cache_info for KFD topology

[Joseph Greathouse]

The current kfd_gpu_cache_info structure is only partially
filled in for some architectures. This means that for devices
where we do not fill in some fields, we can returned
uninitialized values through  the KFD topology.
Zero out the kfd_gpu_cache_info before asking the remaining
fields to be filled in by lower-level functions.

Fixes: 04756ac9a24c ("drm/amdkfd: Add cache line sizes to KFD topology")
Signed-off-by: Joseph Greathouse <Joseph.Greathouse at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 3df2a8ad86fb..5cb0465493b8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1707,6 +1707,7 @@ static void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct
 
 	gpu_processor_id = dev->node_props.simd_id_base;
 
+	memset(cache_info, 0, sizeof(cache_info));
 	pcache_info = cache_info;
 	num_of_cache_types = kfd_get_gpu_cache_info(kdev, &pcache_info);
 	if (!num_of_cache_types) {
-- 
2.20.1