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authorScott McNutt <smcnutt@psyent.com>2011-09-23 11:42:14 +0000
committerWolfgang Denk <wd@denx.de>2011-10-01 21:56:20 +0200
commit15f57988201b5a4761637a1374b87d44761d08e1 (patch)
treed33642ce218b43a65021a15eb273d91088186958 /include/linux/compiler-gcc3.h
parenta9a730e0bc18535597d15ce47964824baf220c94 (diff)
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Add missing header for gcc3
When include/linux/compiler.h is included, the associated gcc3 header is required for older build environments. Signed-off-by: Scott McNutt <smcnutt@psyent.com> Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'include/linux/compiler-gcc3.h')
-rw-r--r--include/linux/compiler-gcc3.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
new file mode 100644
index 0000000..2befe65
--- /dev/null
+++ b/include/linux/compiler-gcc3.h
@@ -0,0 +1,21 @@
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
+#endif
+
+#if __GNUC_MINOR__ >= 3
+# define __used __attribute__((__used__))
+#else
+# define __used __attribute__((__unused__))
+#endif
+
+#if __GNUC_MINOR__ >= 4
+#define __must_check __attribute__((warn_unused_result))
+#endif
+
+/*
+ * A trick to suppress uninitialized variable warning without generating any
+ * code
+ */
+#define uninitialized_var(x) x = x
+
+#define __always_inline inline __attribute__((always_inline))