The new RePaper driver uses the thermal subsystem, and fails to link when it is built-in but thermal is a loadable module:
drivers/gpu/drm/tinydrm/repaper.o: In function `repaper_probe': repaper.c:(.text+0x540): undefined reference to `thermal_zone_get_zone_by_name' drivers/gpu/drm/tinydrm/repaper.o: In function `repaper_fb_dirty': repaper.c:(.text+0xff4): undefined reference to `thermal_zone_get_temp'
This adds another Kconfig dependency to prevent the broken configuration, forcing repaper to be a module too.
Fixes: 3589211e9b03 ("drm/tinydrm: Add RePaper e-ink driver") Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/gpu/drm/tinydrm/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig index 9596e447f877..f17c3caceab2 100644 --- a/drivers/gpu/drm/tinydrm/Kconfig +++ b/drivers/gpu/drm/tinydrm/Kconfig @@ -23,6 +23,7 @@ config TINYDRM_MI0283QT config TINYDRM_REPAPER tristate "DRM support for Pervasive Displays RePaper panels (V231)" depends on DRM_TINYDRM && SPI + depends on THERMAL || !THERMAL help DRM driver for the following Pervasive Displays panels: 1.44" TFT EPD Panel (E1144CS021)