drm/bridge/sii8620: add Kconfig dependency on extcon

The driver can work with or without extcon framework, but if extcon is
build as module, sii8620 should be build as module as well.

Fixes: 688838442147 ("drm/bridge/sii8620: use micro-USB cable detection logic to detect MHL")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180409062708.4326-1-a.hajda@samsung.com
Signed-off-by: Sean Paul <seanpaul@chromium.org>

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 3aa65bdecb0e80aeb289486d1b705b52e0076856..684ac626ac53277ffe4e4be5c97576fd861b9dde 100644 (file)
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -74,6 +74,7 @@ config DRM_SIL_SII8620
        tristate "Silicon Image SII8620 HDMI/MHL bridge"
        depends on OF && RC_CORE
        select DRM_KMS_HELPER
+       imply EXTCON
        help
          Silicon Image SII8620 HDMI/MHL bridge chip driver.