drm/mediatek: add ARM_SMCCC dependency

ARM SMCCC is only set for ARMv7 and ARMv8 CPUs, but we currently
allow the driver to be build for older architecture levels as
well, which results in a link failure:

drivers/gpu/built-in.o: In function `mtk_hdmi_hw_make_reg_writable':
:(.text+0x1e737c): undefined reference to `arm_smccc_smc'

This adds a Kconfig dependency. The patch applies on my two
previous fixes that are not yet applied, so please apply all
three to get randconfig builds to work correctly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support")
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 96ebf8bb6024b8fb43a0779981fccf0835f17893..294de4549922a12f85ffe40d8cfd87b85694cd52 100644 (file)
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -3,6 +3,7 @@ config DRM_MEDIATEK
        depends on DRM
        depends on ARCH_MEDIATEK || (ARM && COMPILE_TEST)
        depends on COMMON_CLK
+       depends on HAVE_ARM_SMCCC
        depends on OF
        select DRM_GEM_CMA_HELPER
        select DRM_KMS_HELPER