Messages in this thread Patch in this message | | | Subject | [PATCH] checkpatch: Check usleep_range arguments | From | Joe Perches <> | Date | Thu, 21 Jun 2012 08:23:18 -0700 |
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usleep_range shouldn't use the same args for min and max.
Report it when it happens and when both args are decimal and min > max.
Signed-off-by: Joe Perches <joe@perches.com> --- scripts/checkpatch.pl | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 630319a..d0c1a63 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3309,6 +3309,22 @@ sub process { } } +# check usleep_range arguments + if ($^V && $^V ge 5.10.0 && + defined $stat && + $stat =~ /^\+(?:.*?)\busleep_range\s*\(\s*($FuncArg)\s*,\s*($FuncArg)\s*\)/) { + my $min = $1; + my $max = $7; + if ($min eq $max) { + WARN("USLEEP_RANGE", + "usleep_range should not use min == max args; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n"); + } elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ && + $min > $max) { + WARN("USLEEP_RANGE", + "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n"); + } + } + # check for new externs in .c files. if ($realfile =~ /\.c$/ && defined $stat && $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)
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