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SubjectRe: [PATCH] staging: imx-drm: Fix modular build of DRM_IMX_IPUV3
On Tue, Nov 12, 2013 at 12:15:45PM -0500, Josh Boyer wrote:
> commit b8d181e408af (staging: drm/imx: add drm plane support) added a file
> to the make target for DRM_IMX_IPUV3 but didn't adjust the objs required
> to actually build that as a module. Kbuild got confused and this lead to
> link errors like:
>
> ERROR: "ipu_plane_disable" [drivers/staging/imx-drm/ipuv3-crtc.ko] undefined!
> ERROR: "ipu_plane_enable" [drivers/staging/imx-drm/ipuv3-crtc.ko] undefined!
>
> Additionally, it added a call to imx_drm_crtc_id which also fails with a
> link error as above. To fix this, we adjust the make target with the proper
> objs, which will change the name of the resulting .ko. We also add an
> EXPORT_SYMBOL_GPL for imx_drm_crtc_id.
>
> Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>


Acked-by: Sascha Hauer <s.hauer@pengutronix.de>

Sascha

> ---
> drivers/staging/imx-drm/Makefile | 4 +++-
> drivers/staging/imx-drm/imx-drm-core.c | 1 +
> 2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/imx-drm/Makefile b/drivers/staging/imx-drm/Makefile
> index 2c3a9e1..8742432 100644
> --- a/drivers/staging/imx-drm/Makefile
> +++ b/drivers/staging/imx-drm/Makefile
> @@ -8,4 +8,6 @@ obj-$(CONFIG_DRM_IMX_TVE) += imx-tve.o
> obj-$(CONFIG_DRM_IMX_LDB) += imx-ldb.o
> obj-$(CONFIG_DRM_IMX_FB_HELPER) += imx-fbdev.o
> obj-$(CONFIG_DRM_IMX_IPUV3_CORE) += ipu-v3/
> -obj-$(CONFIG_DRM_IMX_IPUV3) += ipuv3-crtc.o ipuv3-plane.o
> +
> +imx-ipuv3-crtc-objs := ipuv3-crtc.o ipuv3-plane.o
> +obj-$(CONFIG_DRM_IMX_IPUV3) += imx-ipuv3-crtc.o
> diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
> index 4483d47..2b366d8 100644
> --- a/drivers/staging/imx-drm/imx-drm-core.c
> +++ b/drivers/staging/imx-drm/imx-drm-core.c
> @@ -72,6 +72,7 @@ int imx_drm_crtc_id(struct imx_drm_crtc *crtc)
> {
> return crtc->pipe;
> }
> +EXPORT_SYMBOL_GPL(imx_drm_crtc_id);
>
> static void imx_drm_driver_lastclose(struct drm_device *drm)
> {
> --
> 1.8.3.1
>
>

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