linux-kernel - Re: [PATCH] staging: imx-drm: Fix modular build of DRM_IMX

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Date:	Tue, 19 Nov 2013 20:56:59 -0500
From:	Josh Boyer <jwboyer@...hat.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Philipp Zabel <p.zabel@...gutronix.de>,
	Dave Airlie <airlied@...il.com>, devel@...verdev.osuosl.org,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: imx-drm: Fix modular build of DRM_IMX_IPUV3

On Mon, Nov 18, 2013 at 10:03:10AM +0100, Sascha Hauer wrote:
> 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@...oraproject.org>
> 
> 
> Acked-by: Sascha Hauer <s.hauer@...gutronix.de>
> 
> Sascha

Thanks.  So who picks this fix up?  Greg, is that you?

josh

> 
> > ---
> >  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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