[PATCH 2/4] drm/amdkfd: Add NULL-pointer check

[Kuehling, Felix]

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

Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index aa793fc..c5ed21e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -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;
 		}
-- 
2.7.4