Make all media drivers build with COMPILE_TEST

The current media policy has been for a while to only accept new drivers that compile with COMPILE_TEST.

However, there are still several drivers under that doesn't build with COMPILE_TEST.

So, this series makes the existing ones also compatible with it.

Not building with COMPILE_TEST is a bad thing, for several reasons.

The main ones is that:

1) the licence the Kernel community has for Coverity only builds for x86. So, drivers that don't build on such archtecture were likely never tested by it.

2) That affects my per-patch handling process, with should be quick enough to not delay my patch handling process. So, I only build for one architecture (i386).

3) When appliying a patch, I always run two static code analyzers (W=1, smatch and sparse). Those drivers weren't checked by me. At the end of the day, that leads to a lower quality check for the drivers that don't build on i386.

There are two situations on this patch series that proof the lower quality of those drivers:

- There is a case of a driver that was added broken in 2013. Only two years later, someone noticed and "fixed" it by markin it as BROKEN!

- 5 patches in this series (about 1/3) are just to fix build issues on those drivers, most of them due to gcc warnings.

With this patch series, all "config FOO" and "menuconfig FOO" symbols under media will be built with allyes config.

Tested with:

	$ make ARCH=i386 allyesconfig
	$ for i in  $(grep "config " $(find drivers/staging/media/ -name Kconfig) $(find drivers/media/ -name Kconfig) |grep -v "\#.*Kconfig"|cut -d' ' -f 2) ; do if [ "$(grep $i .config)" == "" ]; then echo $i; fi;done

v2:

- did some changes as per Laurent's feedback from the past series;
- added a patch to compile both si470x drivers at the same time;
- added patches to also build all media staging drivers.

I opted to preserve patch 03/16 (omap3isp build) as I don't see any strong reason why this driver should not be allowed to build with COMPILE_TEST.

Mauro Carvalho Chehab (19):
omap: omap-iommu.h: allow building drivers with COMPILE_TEST
media: omap3isp: allow it to build with COMPILE_TEST
media: omap3isp/isp: remove an unused static var
media: fsl-viu: mark static functions as such
media: fsl-viu: allow building it with COMPILE_TEST
media: cec_gpio: allow building CEC_GPIO with COMPILE_TEST
media: exymos4-is: allow compile test for EXYNOS FIMC-LITE
media: mmp-camera.h: add missing platform data
media: marvel-ccic: re-enable mmp-driver build
media: mmp-driver: make two functions static
media: davinci: allow building isif code
media: davinci: allow build vpbe_display with COMPILE_TEST
media: vpbe_venc: don't store return codes if they won't be used
media: davinci: get rid of lots of kernel-doc warnings
omap2: omapfb: allow building it with COMPILE_TEST
media: omap: allow building it with COMPILE_TEST
media: omap4iss: make it build with COMPILE_TEST
media: si470x: allow build both USB and I2C at the same time
media: staging: davinci_vpfe: allow building with COMPILE_TEST

 drivers/media/platform/Kconfig                   | 12 ++---
 drivers/media/platform/davinci/Kconfig           |  6 ++-
 drivers/media/platform/davinci/isif.c            |  2 -
 drivers/media/platform/davinci/vpbe.c            | 38 ++++++++-------
 drivers/media/platform/davinci/vpbe_display.c    | 21 ++++----
 drivers/media/platform/davinci/vpbe_osd.c        | 16 ++++---
 drivers/media/platform/davinci/vpbe_venc.c       |  9 ++--
 drivers/media/platform/exynos4-is/Kconfig        |  4 +-
 drivers/media/platform/fsl-viu.c                 | 20 +++++---
 drivers/media/platform/marvell-ccic/Kconfig      |  5 +-
 drivers/media/platform/marvell-ccic/mmp-driver.c |  4 +-
 drivers/media/platform/omap/Kconfig              |  8 ++--
 drivers/media/platform/omap3isp/isp.c            | 14 +++---
 drivers/media/radio/Kconfig                      |  4 --
 drivers/media/radio/si470x/Kconfig               | 16 ++++++-
 drivers/media/radio/si470x/Makefile              |  8 ++--
 drivers/media/radio/si470x/radio-si470x-common.c | 61 +++++++++++++++++-------
 drivers/media/radio/si470x/radio-si470x-i2c.c    | 18 ++++---
 drivers/media/radio/si470x/radio-si470x-usb.c    | 18 ++++---
 drivers/media/radio/si470x/radio-si470x.h        | 15 +++---
 drivers/staging/media/davinci_vpfe/Kconfig       |  3 +-
 drivers/staging/media/davinci_vpfe/Makefile      |  5 ++
 drivers/staging/media/davinci_vpfe/TODO          |  1 +
 drivers/staging/media/omap4iss/Kconfig           |  3 +-
 drivers/video/fbdev/omap2/Kconfig                |  2 +-
 include/linux/omap-iommu.h                       |  5 ++
 include/linux/platform_data/media/mmp-camera.h   | 19 ++++++++
 27 files changed, 217 insertions(+), 120 deletions(-)

2.14.3