[Lima] [PATCH] drm/lima: fix build on MMU-less platform

[Qiang Yu]

On Mon, Apr 8, 2019 at 7:56 PM Neil Armstrong <narmstrong at baylibre.com> wrote:
>
> Hi,
>
> On 08/04/2019 13:26, Qiang Yu wrote:
> > Feedback from kbuild robot:
> > config: sh-allyesconfig (attached as .config)
> > compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
> > lima_gem.c:(.text+0x6c): undefined reference to `vmf_insert_mixed'
> >
> > Cc: Randy Dunlap <rdunlap at infradead.org>
> > Signed-off-by: Qiang Yu <yuq825 at gmail.com>
>
> You'll need a Fixes tag here, even if on the same release
>
So like this?
Fixes: a1d2a6339961 ("drm/lima: driver for ARM Mali4xx GPUs")

> > ---
> >  drivers/gpu/drm/lima/Kconfig    | 2 ++
> >  drivers/gpu/drm/lima/lima_gem.c | 1 +
> >  2 files changed, 3 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/lima/Kconfig b/drivers/gpu/drm/lima/Kconfig
> > index f11314448093..fed2b0863287 100644
> > --- a/drivers/gpu/drm/lima/Kconfig
> > +++ b/drivers/gpu/drm/lima/Kconfig
> > @@ -5,6 +5,8 @@ config DRM_LIMA
> >         tristate "LIMA (DRM support for ARM Mali 400/450 GPU)"
> >         depends on DRM
> >         depends on ARM || ARM64 || COMPILE_TEST
> > +       depends on MMU
> > +       depends on COMMON_CLK
> >         select DRM_SCHED
> >         help
> >           DRM driver for ARM Mali 400/450 GPUs.
> > diff --git a/drivers/gpu/drm/lima/lima_gem.c b/drivers/gpu/drm/lima/lima_gem.c
> > index 2d3cf96f6c58..1d69498bc17e 100644
> > --- a/drivers/gpu/drm/lima/lima_gem.c
> > +++ b/drivers/gpu/drm/lima/lima_gem.c
> > @@ -1,6 +1,7 @@
> >  // SPDX-License-Identifier: GPL-2.0 OR MIT
> >  /* Copyright 2017-2019 Qiang Yu <yuq825 at gmail.com> */
> >
> > +#include <linux/mm.h>
>
> I would have fixed this on a second patch

This is suggested by Randy, I expect it's also part of the fix for build fail
when MMU-less platform, MMU platform is OK. Should I still separate it?

Thanks,
Qiang

>
> >  #include <linux/sync_file.h>
> >  #include <linux/pfn_t.h>
> >
> >