fix potential Spectre variant 1 issues

This patchset aims to fix various media platform and media usb cases where we have user controlled array dereferences that could be exploited due to the Spectre variant 1 vulnerability. All were reported by Dan Carpenter.

Notice that given that speculation windows are large, the policy is to kill the speculation on the first load and not worry if it can be completed with a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Thanks

Gustavo A. R. Silva (11):
media: tm6000: fix potential Spectre variant 1
exynos4-is: mipi-csis: fix potential Spectre variant 1
fsl-viu: fix potential Spectre variant 1
marvell-ccic: mcam-core: fix potential Spectre variant 1
omap_vout: fix potential Spectre variant 1
rcar-v4l2: fix potential Spectre variant 1
rcar_drif: fix potential Spectre variant 1
sh_vou: fix potential Spectre variant 1
vimc-debayer: fix potential Spectre variant 1
vivid-sdr-cap: fix potential Spectre variant 1
vsp1_rwpf: fix potential Spectre variant 1

 drivers/media/platform/exynos4-is/mipi-csis.c   | 5 ++++-
 drivers/media/platform/fsl-viu.c                | 8 ++++----
 drivers/media/platform/marvell-ccic/mcam-core.c | 3 +++
 drivers/media/platform/omap/omap_vout.c         | 3 +++
 drivers/media/platform/rcar-vin/rcar-v4l2.c     | 4 +++-
 drivers/media/platform/rcar_drif.c              | 4 +++-
 drivers/media/platform/sh_vou.c                 | 3 +++
 drivers/media/platform/vimc/vimc-debayer.c      | 5 ++++-
 drivers/media/platform/vivid/vivid-sdr-cap.c    | 6 ++++++
 drivers/media/platform/vsp1/vsp1_rwpf.c         | 3 +++
 drivers/media/usb/tm6000/tm6000-video.c         | 2 ++
 11 files changed, 38 insertions(+), 8 deletions(-)

2.7.4