[PATCH] drm: fix DRM_DISPLAY_DP_HELPER dependencies, part 2

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From: Arnd Bergmann <arnd@xxxxxxxx>

After my fix yesterday, I ran into another problem of the same kind:

aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/analogix_dp_core.o: in function `drm_dp_dpcd_readb':
analogix_dp_core.c:(.text+0x194): undefined reference to `drm_dp_dpcd_read'
aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/analogix_dp_core.o: in function `drm_dp_dpcd_writeb':
analogix_dp_core.c:(.text+0x214): undefined reference to `drm_dp_dpcd_write'
aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/analogix_dp_core.o: in function `analogix_dp_stop_crc':
analogix_dp_core.c:(.text+0x4b0): undefined reference to `drm_dp_stop_crc'
aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/analogix_dp_core.o: in function `analogix_dp_start_crc':
analogix_dp_core.c:(.text+0xbe8): undefined reference to `drm_dp_start_crc'

Add the same dependency again to ROCKCHIP_ANALOGIX_DP after checking that
nothing else selects the analogix driver. Also add a dependency to
DRM_ANALOGIX_DP to make it easier to identifier future problems of
this type when they get introduced.

Fixes: 0323287de87d ("drm: Switch DRM_DISPLAY_DP_HELPER to depends on")
Fixes: d1ef8fc18be6 ("drm: fix DRM_DISPLAY_DP_HELPER dependencies")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/gpu/drm/bridge/analogix/Kconfig | 2 +-
 drivers/gpu/drm/rockchip/Kconfig        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig
index 12bfea53bf24..5b564fded6d6 100644
--- a/drivers/gpu/drm/bridge/analogix/Kconfig
+++ b/drivers/gpu/drm/bridge/analogix/Kconfig
@@ -28,7 +28,7 @@ config DRM_ANALOGIX_ANX78XX
 
 config DRM_ANALOGIX_DP
 	tristate
-	depends on DRM
+	depends on DRM_DISPLAY_HELPER
 
 config DRM_ANALOGIX_ANX7625
 	tristate "Analogix Anx7625 MIPI to DP interface support"
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index 4b4ad75032fd..4c7072e6e34e 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -36,7 +36,7 @@ config ROCKCHIP_VOP2
 config ROCKCHIP_ANALOGIX_DP
 	bool "Rockchip specific extensions for Analogix DP driver"
 	depends on DRM_DISPLAY_DP_HELPER
-	depends on DRM_DISPLAY_HELPER
+	depends on DRM_DISPLAY_HELPER=y || (DRM_DISPLAY_HELPER=m && DRM_ROCKCHIP=m)
 	depends on ROCKCHIP_VOP
 	help
 	  This selects support for Rockchip SoC specific extensions
-- 
2.39.2




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