[PATCH 1/4] drm/amdgpu: do not create ras debugfs/sysfs node for ASICs that don't have ras ability

[Hawking Zhang]

driver shouldn't init any ras debugfs/sysfs node for ASICs that don't have ras
hardware ability

Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index c20d03b..bda9025 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1496,6 +1496,12 @@ int amdgpu_ras_init(struct amdgpu_device *adev)
 
 	amdgpu_ras_check_supported(adev, &con->hw_supported,
 			&con->supported);
+	if (!con->hw_supported) {
+		amdgpu_ras_set_context(adev, NULL);
+		kfree(con);
+		return 0;
+	}
+
 	con->features = 0;
 	INIT_LIST_HEAD(&con->head);
 	/* Might need get this flag from vbios. */
-- 
2.7.4