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| author | Arnd Bergmann <arnd@arndb.de> | 2018-07-06 16:28:28 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-07-09 09:54:33 +0200 |
| commit | 3156b53c2e2fadafa1a16412a8791b38f94b5bdc (patch) | |
| tree | ea4197a08ccc3cbb39f9026ce5bc56507d4ba892 /drivers/gpu/drm | |
| parent | drm/bridge/sii8620: Fix link mode selection (diff) | |
| download | linux-3156b53c2e2fadafa1a16412a8791b38f94b5bdc.tar.xz linux-3156b53c2e2fadafa1a16412a8791b38f94b5bdc.zip | |
drm/sun4i: link in front-end code if needed
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
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/sun4i/Makefile | 5 |
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 |