The recently added PTN3460 device driver uses interfaces that are provided by the KMS helper infrastructure, so we should explicitly select that to avoid this linker error:
ERROR: "drm_helper_probe_single_connector_modes" [drivers/gpu/drm/bridge/ptn3460.ko] undefined! ERROR: "drm_helper_connector_dpms" [drivers/gpu/drm/bridge/ptn3460.ko] undefined!
We have to drop the I2C dependency to avoid a circular dependency chain, but that's ok because DRM already selects I2C.
Signed-off-by: Arnd Bergmann arnd@arndb.de --- I found this today doing randconfig builds on linux-next.
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index f8db069..884923f 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -1,4 +1,5 @@ config DRM_PTN3460 tristate "PTN3460 DP/LVDS bridge" - depends on DRM && I2C + depends on DRM + select DRM_KMS_HELPER ---help---