checkpatch: warn when declaring "struct spinlock foo;"

spinlock_t should always be used.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e0a674f471eed86504b865a88961f85db11f2d66..f27b0b53e3eadba97e10a4cf6aa7b52c1c4e89c2 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3336,6 +3336,12 @@ sub process {
                             "Avoid line continuations in quoted strings\n" . $herecurr);
                }
 
+# check for struct spinlock declarations
+               if ($line =~ /^.\s*\bstruct\s+spinlock\s+\w+\s*;/) {
+                       WARN("USE_SPINLOCK_T",
+                            "struct spinlock should be spinlock_t\n" . $herecurr);
+               }
+
 # Check for misused memsets
                if ($^V && $^V ge 5.10.0 &&
                    defined $stat &&