Commit 53a3c448 authored by Andy Whitcroft's avatar Andy Whitcroft Committed by Linus Torvalds

checkpatch: returning errno typically should be negative

Add a (strict mode only) test to check for non-negative returns of what
appear to be errno values as the majority case these should indeed be
Suggested-by: default avatarAndrew Morton <>
Signed-off-by: default avatarAndy Whitcroft <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 9446ef56
......@@ -2204,6 +2204,13 @@ sub process {
ERROR("space required before the open parenthesis '('\n" . $herecurr);
# Return of what appears to be an errno should normally be -'ve
if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
my $name = $1;
if ($name ne 'EOF' && $name ne 'ERROR') {
WARN("return of an errno should typically be -ve (return -$1)\n" . $herecurr);
# Need a space before open parenthesis after if, while etc
if ($line=~/\b(if|while|for|switch)\(/) {
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment