[PATCH] drm/amdgpu: enable amdgpu_dc module parameter

[Lang Yu <Lang.Yu@amd.com>]

It doesn't work under IP discovery mode. Make it work!

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index 07965ac6381b..1ad137499e38 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -846,8 +846,14 @@ static int amdgpu_discovery_set_display_ip_blocks(struct amdgpu_device *adev)
 {
 	if (adev->enable_virtual_display || amdgpu_sriov_vf(adev)) {
 		amdgpu_device_ip_block_add(adev, &amdgpu_vkms_ip_block);
+		return 0;
+	}
+
+	if (!amdgpu_device_has_dc_support(adev))
+		return 0;
+
 #if defined(CONFIG_DRM_AMD_DC)
-	} else if (adev->ip_versions[DCE_HWIP][0]) {
+	if (adev->ip_versions[DCE_HWIP][0]) {
 		switch (adev->ip_versions[DCE_HWIP][0]) {
 		case IP_VERSION(1, 0, 0):
 		case IP_VERSION(1, 0, 1):
@@ -882,9 +888,9 @@ static int amdgpu_discovery_set_display_ip_blocks(struct amdgpu_device *adev)
 				adev->ip_versions[DCI_HWIP][0]);
 			return -EINVAL;
 		}
-#endif
 	}
 	return 0;
+#endif
 }
 
 static int amdgpu_discovery_set_gc_ip_blocks(struct amdgpu_device *adev)
-- 
2.25.1