From: Javier Martinez Canillas Date: Tue, 29 Nov 2016 14:40:51 +0000 (-0300) Subject: drm/exynos: Use VIDEO_SAMSUNG_EXYNOS_GSC=n as GSC Kconfig dependency X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4e775249269213a2d8825d7f878e42e99a2b6080;p=linux-beck.git drm/exynos: Use VIDEO_SAMSUNG_EXYNOS_GSC=n as GSC Kconfig dependency Commit aeefb36832e5 ("drm/exynos: gsc: add device tree support and remove usage of static mappings") made the DRM_EXYNOS_GSC Kconfig symbol to only be selectable if the exynos-gsc V4L2 driver isn't enabled, since both use the same HW IP block. But added the dependency as depends on !VIDEO_SAMSUNG_EXYNOS_GSC which is not correct since Kconfig expressions are not boolean but tristate. So it will only evaluate to 'n' if VIDEO_SAMSUNG_EXYNOS_GSC=y but will evaluate to 'm' if VIDEO_SAMSUNG_EXYNOS_GSC=m. This means that both the V4L2 and DRM drivers can be enabled if the former is enabled as a module, which isn't what we want since otherwise 2 drivers could attempt to use the hardware at the same time. Signed-off-by: Javier Martinez Canillas Signed-off-by: Inki Dae --- diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig index 465d344f3391..d706ca4e2f02 100644 --- a/drivers/gpu/drm/exynos/Kconfig +++ b/drivers/gpu/drm/exynos/Kconfig @@ -114,7 +114,7 @@ config DRM_EXYNOS_ROTATOR config DRM_EXYNOS_GSC bool "GScaler" - depends on DRM_EXYNOS_IPP && ARCH_EXYNOS5 && !VIDEO_SAMSUNG_EXYNOS_GSC + depends on DRM_EXYNOS_IPP && ARCH_EXYNOS5 && VIDEO_SAMSUNG_EXYNOS_GSC=n help Choose this option if you want to use Exynos GSC for DRM.