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drm: rcar-du: Clarify vsp dependency

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The VSP1 compositor code in DRM links against the respective V4L
driver, but the dependency is not expressed correctly in Kconfig,
which leads to a build error when the DRM driver is built-in
and the V4L driver is a module:

drivers/gpu/built-in.o: In function `rcar_du_vsp_plane_atomic_update':
rcar-du/rcar_du_vsp.c:183: undefined reference to `vsp1_du_atomic_update'

This patch avoids the problem by ensuring that the DRM VSP code can
only be enabled if the V4L driver is linked into the kernel, or
both are loadable modules.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6d62ef3ac30b ("drm: rcar-du: Expose the VSP1 compositor through KMS planes")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Arnd Bergmann 2016-02-26 12:52:20 +01:00 committed by Laurent Pinchart
parent 027b3f8ba9
commit 4f5504cfc6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/rcar-du/Kconfig
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@ -27,6 +27,6 @@ config DRM_RCAR_LVDS
config DRM_RCAR_VSP
bool "R-Car DU VSP Compositor Support"
depends on DRM_RCAR_DU
depends on VIDEO_RENESAS_VSP1
depends on VIDEO_RENESAS_VSP1=y || (VIDEO_RENESAS_VSP1 && DRM_RCAR_DU=m)
help
Enable support to expose the R-Car VSP Compositor as KMS planes.