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-rwxr-xr-xscripts/checkpatch.pl13
1 files changed, 12 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d64c67b67e3c..2be07ed4d70c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -479,7 +479,7 @@ our $allocFunctions = qr{(?x:
(?:kv|k|v)[czm]alloc(?:_node|_array)? |
kstrdup(?:_const)? |
kmemdup(?:_nul)?) |
- (?:\w+)?alloc_skb(?:ip_align)? |
+ (?:\w+)?alloc_skb(?:_ip_align)? |
# dev_alloc_skb/netdev_alloc_skb, et al
dma_alloc_coherent
)};
@@ -4199,6 +4199,17 @@ sub process {
"ENOSYS means 'invalid syscall nr' and nothing else\n" . $herecurr);
}
+# ENOTSUPP is not a standard error code and should be avoided in new patches.
+# Folks usually mean EOPNOTSUPP (also called ENOTSUP), when they type ENOTSUPP.
+# Similarly to ENOSYS warning a small number of false positives is expected.
+ if (!$file && $line =~ /\bENOTSUPP\b/) {
+ if (WARN("ENOTSUPP",
+ "ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/\bENOTSUPP\b/EOPNOTSUPP/;
+ }
+ }
+
# function brace can't be on same line, except for #defines of do while,
# or if closed on same line
if ($perl_version_ok &&