checkpatch.pl: new instances of ENOSYS are errors

[linux-2.6-block.git] / scripts / checkpatch.pl

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 28516587babac8fbc9eb346f0a44b1aba9c39a8e..561f41ef531fd6f3d64ab4a6fcf7e278354f947d 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3396,6 +3396,14 @@ sub process {
                             "Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
                }
 
+# ENOSYS means "bad syscall nr" and nothing else.  This will have a small
+# number of false positives, but assembly files are not checked, so at
+# least the arch entry code will not trigger this warning.
+               if ($line =~ /\bENOSYS\b/) {
+                       WARN("ENOSYS",
+                            "ENOSYS means 'invalid syscall nr' and nothing else\n" . $herecurr);
+               }
+
 # function brace can't be on same line, except for #defines of do while,
 # or if closed on same line
                if (($line=~/$Type\s*$Ident\(.*\).*\s*{/) and