drm/msm/dp: displayPort driver need algorithm rational

[ Upstream commit 53d22794711ad630f40d59dd726bd260d77d585f ]

Let's select RATIONAL with dp driver. avoid like:

[...]
x86_64-linux-gnu-ld: drivers/gpu/drm/msm/dp/dp_catalog.o: in function `dp_catalog_ctrl_config_msa':
dp_catalog.c:(.text+0x57e): undefined reference to `rational_best_approximation'

Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support")
Reported-by: kernelbot <kernel-bot@kylinos.cn>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Link: https://lore.kernel.org/r/20211110070950.3355597-2-liu.yun@linux.dev
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 3ddf739a6f9b8b10dd5f49977cfbd7d9ac1f5c48..c49b2392311903260b64f740ae82b322319f9aad 100644 (file)
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -63,6 +63,7 @@ config DRM_MSM_HDMI_HDCP
 config DRM_MSM_DP
        bool "Enable DisplayPort support in MSM DRM driver"
        depends on DRM_MSM
+       select RATIONAL
        default y
        help
          Compile in support for DP driver in MSM DRM driver. DP external