[PATCH] drm/amdgpu: fix unused-function error

[Ren Zhijie]

If CONFIG_DRM_AMDGPU=y and CONFIG_DRM_AMD_DC is not set,
gcc complained about unused-function :

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c:1705:13: error: 
‘amdgpu_discovery_set_sriov_display’ defined but not used 
[-Werror=unused-function]
 static void amdgpu_discovery_set_sriov_display(struct amdgpu_device *adev)
 ^~
cc1: all warnings being treated as errors

To fix this error, use CONFIG_DRM_AMD_DC to wrap
the definition of amdgpu_discovery_set_sriov_display().

Fixes: 25263da37693 ("drm/amdgpu: rework SR-IOV virtual display handling")
Signed-off-by: Ren Zhijie 
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index 6b48178455bc..2509341df92d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -1702,11 +1702,13 @@ static int amdgpu_discovery_set_smu_ip_blocks(struct 
amdgpu_device *adev)
return 0;
 }
 
+#if defined(CONFIG_DRM_AMD_DC)
 static void amdgpu_discovery_set_sriov_display(struct amdgpu_device *adev)
 {
amdgpu_device_set_sriov_virtual_display(adev);
amdgpu_device_ip_block_add(adev, &amdgpu_vkms_ip_block);
 }
+#endif
 
 static int amdgpu_discovery_set_display_ip_blocks(struct amdgpu_device *adev)
 {
-- 
2.17.1

[PATCH -next] drm/rcar-du: Fix undefined reference error

[Ren Zhijie]

If DRM_RCAR_MIPI_DSI=m and DRM_RCAR_DU=y,
gcc complained about undefined reference :

drivers/gpu/drm/rcar-du/rcar_du_crtc.o: In function 
`rcar_du_crtc_atomic_enable':
rcar_du_crtc.c:(.text+0x1958): undefined reference to 
`rcar_mipi_dsi_pclk_enable'
drivers/gpu/drm/rcar-du/rcar_du_crtc.o: In function 
`rcar_du_crtc_atomic_disable':
rcar_du_crtc.c:(.text+0x3cf4): undefined reference to 
`rcar_mipi_dsi_pclk_disable'

To fix this error, add select DRM_RCAR_MIPI_DSI dependency to config 
DRM_RCAR_DU.

Fixes: 957fe62d7d15 ("drm: rcar-du: Fix DSI enable & disable sequence")
Signed-off-by: Ren Zhijie 
---
 drivers/gpu/drm/rcar-du/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
index c959e8c6be7d..23f6aa70f4cf 100644
--- a/drivers/gpu/drm/rcar-du/Kconfig
+++ b/drivers/gpu/drm/rcar-du/Kconfig
@@ -7,6 +7,7 @@ config DRM_RCAR_DU
select DRM_KMS_HELPER
select DRM_GEM_DMA_HELPER
select VIDEOMODE_HELPERS
+   select DRM_RCAR_MIPI_DSI
help
  Choose this option if you have an R-Car chipset.
  If M is selected the module will be called rcar-du-drm.
-- 
2.17.1