Using bool in a bitfield isn't a good idea as the alignment behavior is arch implementation defined.
Suggest using unsigned int or u<8|16|32> instead. Signed-off-by: Joe Perches <[email protected]> Suggested-by: Peter Zijlstra <[email protected]> --- scripts/checkpatch.pl | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index eb534d48140e..e16d6713f236 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -6251,6 +6251,12 @@ sub process { } } +# check for bool bitfields + if ($sline =~ /^.\s+bool\s*$Ident\s*:\s*\d+\s*;/) { + WARN("BOOL_BITFIELD", + "Avoid using bool as bitfield. Prefer bool bitfields as unsigned int or u<8|16|32>\n" . $herecurr); + } + # check for semaphores initialized locked if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) { WARN("CONSIDER_COMPLETION",
