1 files changed, 7 insertions, 0 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8b69af8a76f9..dd11bbe01338 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2592,6 +2592,13 @@ sub process {
                         }
                 }
 
+# warn about unexpectedly long msleep's
+                if ($line =~ /\bmsleep\s*\((\d+)\);/) {
+                        if ($1 < 20) {
+                                WARN("msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $line);
+                        }
+                }
+
 # warn about #ifdefs in C files
 #               if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
 #                       print "#ifdef in C files should be avoided\n";