[PATCH 0/4] tree-wide: fix comparison to bitshift when dealing with a mask

Wolfram Sang wsa+renesas at sang-engineering.com
Mon Feb 5 12:09:57 PST 2018


In one Renesas driver, I found a typo which turned an intended bit shift ('<<')
into a comparison ('<'). Because this is a subtle issue, I looked tree wide for
similar patterns. This small patch series is the outcome.

Buildbot and checkpatch are happy. Only compile-tested. To be applied
individually per sub-system, I think. I'd think only the net: amd: patch needs
to be conisdered for stable, but I leave this to people who actually know this
driver.

CCing Dan. Maybe he has an idea how to add a test to smatch? In my setup, only
cppcheck reported a 'coding style' issue with a low prio.

Wolfram Sang (4):
  v4l: vsp1: fix mask creation for MULT_ALPHA_RATIO
  drm/exynos: fix comparison to bitshift when dealing with a mask
  v4l: dvb-frontends: stb0899: fix comparison to bitshift when dealing
    with a mask
  net: amd-xgbe: fix comparison to bitshift when dealing with a mask

 drivers/gpu/drm/exynos/regs-fimc.h        | 2 +-
 drivers/media/dvb-frontends/stb0899_reg.h | 8 ++++----
 drivers/media/platform/vsp1/vsp1_regs.h   | 2 +-
 drivers/net/ethernet/amd/xgbe/xgbe-drv.c  | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

-- 
2.11.0




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