[PATCH 5.10 300/593] drm/bridge/sii8620: fix dependency on extcon

[Greg Kroah-Hartman]

From: Robert Foss <robert.foss@xxxxxxxxxx>

[ Upstream commit 08319adbdde15ef7cee1970336f63461254baa2a ]

The DRM_SIL_SII8620 kconfig has a weak `imply` dependency
on EXTCON, which causes issues when sii8620 is built
as a builtin and EXTCON is built as a module.

The symptoms are 'undefined reference' errors caused
by the symbols in EXTCON not being available
to the sii8620 driver.

Fixes: 688838442147 ("drm/bridge/sii8620: use micro-USB cable detection logic to detect MHL")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
Reviewed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210419090124.153560-1-robert.foss@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/bridge/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index e145cbb35bac..4e82647a621e 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -130,7 +130,7 @@ config DRM_SIL_SII8620
 	tristate "Silicon Image SII8620 HDMI/MHL bridge"
 	depends on OF
 	select DRM_KMS_HELPER
-	imply EXTCON
+	select EXTCON
 	depends on RC_CORE || !RC_CORE
 	help
 	  Silicon Image SII8620 HDMI/MHL bridge chip driver.
-- 
2.30.2