[PATCH] drm/amdgpu/display: fix warnings when CONFIG_DRM_AMD_DC_DCN is not set

[Alex Deucher]

Properly protect the relevant code with CONFIG_DRM_AMD_DC_DCN.

Fixes: 0b08c54bb7a3 ("drm/amd/display: Fix the display corruption issue on Navi10")
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index fdb1fa72061a..843080e4c39e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -893,6 +893,7 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev)
 	return 0;
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
 static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_addr_space_config *pa_config)
 {
 	uint64_t pt_base;
@@ -945,6 +946,7 @@ static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_
 	pa_config->is_hvm_enabled = 0;
 
 }
+#endif
 
 static int amdgpu_dm_init(struct amdgpu_device *adev)
 {
@@ -952,7 +954,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 #ifdef CONFIG_DRM_AMD_DC_HDCP
 	struct dc_callback_init init_params;
 #endif
-	struct dc_phy_addr_space_config pa_config;
 	int r;
 
 	adev->dm.ddev = adev_to_drm(adev);
@@ -1060,6 +1061,8 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	if (adev->asic_type == CHIP_RENOIR) {
+		struct dc_phy_addr_space_config pa_config;
+
 		mmhub_read_system_context(adev, &pa_config);
 
 		// Call the DC init_memory func
-- 
2.25.4