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drm/amdkfd: Add NULL-pointer check 

top_dev->gpu is NULL for CPUs. Avoid dereferencing it if NULL.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling 2018-11-20 20:52:37 -05:00 committed by Alex Deucher
parent 611736d844
commit 3704d56e1a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdkfd/kfd_topology.c
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@ -101,7 +101,7 @@ struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
down_read(&topology_lock);
list_for_each_entry(top_dev, &topology_device_list, list)
if (top_dev->gpu->pdev == pdev) {
if (top_dev->gpu && top_dev->gpu->pdev == pdev) {
device = top_dev->gpu;
break;
}