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checkpatch: improve return negative errno check 

Add a few conditions to the test to find
	return (ERRNO);

Make the output message a bit less cryptic too.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2015-04-16 12:44:19 -07:00 committed by Linus Torvalds
parent b392c64f59
commit f34e4a4f97
1 changed files with 3 additions and 3 deletions
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6
scripts/checkpatch.pl
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@ -4009,12 +4009,12 @@ sub process {
}
}
# Return of what appears to be an errno should normally be -'ve
if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
# Return of what appears to be an errno should normally be negative
if ($sline =~ /\breturn(?:\s*\(+\s*|\s+)(E[A-Z]+)(?:\s*\)+\s*|\s*)[;:,]/) {
my $name = $1;
if ($name ne 'EOF' && $name ne 'ERROR') {
WARN("USE_NEGATIVE_ERRNO",
"return of an errno should typically be -ve (return -$1)\n" . $herecurr);
"return of an errno should typically be negative (ie: return -$1)\n" . $herecurr);
}
}