From: Jacopo Mondi Date: Fri, 3 Mar 2017 12:58:56 +0000 (+0100) Subject: drm: rcar-du: Make sure the VSP is initialized on platforms that need it X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3115345577d8e8c912562a1dd555787f11fcaf06;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm: rcar-du: Make sure the VSP is initialized on platforms that need it On Gen3 platforms planes are managed by the external VSP compositor on behalf of DRM/KMS. If VSP compositor support is not enabled in the DU driver, the VSP initialization stub routine is called. Return an error from that stub to fail explicitly, otherwise the device won't be usable and the driver will crash. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart [Clarified commit message] Signed-off-by: Laurent Pinchart --- diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h index 510dcc9c6816..f1d0f1824528 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.h @@ -68,7 +68,7 @@ void rcar_du_vsp_disable(struct rcar_du_crtc *crtc); void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc); void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc); #else -static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp) { return 0; }; +static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp) { return -ENXIO; }; static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { }; static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { }; static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };