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authorArnd Bergmann <arnd@arndb.de>2018-07-06 16:28:28 +0200
committerMaxime Ripard <maxime.ripard@bootlin.com>2018-07-09 09:54:33 +0200
commit3156b53c2e2fadafa1a16412a8791b38f94b5bdc (patch)
treeea4197a08ccc3cbb39f9026ce5bc56507d4ba892
parent44f9a4b0dc7563669772198e5b226cab58a00167 (diff)
drm/sun4i: link in front-end code if neededdrm-misc-fixes-2018-07-13
When the base sun4i DRM driver is built-in but the back-end is a loadable module, we run into a link error: drivers/gpu/drm/sun4i/sun4i_drv.o: In function `sun4i_drv_probe': sun4i_drv.c:(.text+0x60c): undefined reference to `sun4i_frontend_of_table' The dependency is a bit tricky, the best workaround I have come up with is to use a Makefile hack to to interpret both CONFIG_DRM_SUN4I_BACKEND=m and CONFIG_DRM_SUN4I_BACKEND=y as a directive to build the front-end the same way as the main module. Fixes: dd0421f47505 ("drm/sun4i: Add a driver for the display frontend") Link: https://lore.kernel.org/lkml/20180301091908.zcptz3ezqr2c6ly5@flea/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180706142847.2032381-1-arnd@arndb.de
-rw-r--r--drivers/gpu/drm/sun4i/Makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index 2589f4acd5ae..9c81301d0eed 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -32,7 +32,10 @@ obj-$(CONFIG_DRM_SUN4I) += sun4i-tcon.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
-obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o sun4i-frontend.o
+obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o
+ifdef CONFIG_DRM_SUN4I_BACKEND
+obj-$(CONFIG_DRM_SUN4I) += sun4i-frontend.o
+endif
obj-$(CONFIG_DRM_SUN4I_HDMI) += sun4i-drm-hdmi.o
obj-$(CONFIG_DRM_SUN6I_DSI) += sun6i-dsi.o
obj-$(CONFIG_DRM_SUN8I_DW_HDMI) += sun8i-drm-hdmi.o