From: Scott McNutt <smcnutt@psyent.com>
Date: Fri, 23 Sep 2011 11:42:14 +0000 (+0000)
Subject: Add missing header for gcc3
X-Git-Tag: accepted/tizen/mobile/20161215.074110~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F74%2F104274%2F1;p=profile%2Fmobile%2Fplatform%2Fkernel%2Fu-boot-tm1.git

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>

[backport from u-boot mainline for gcc6]
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

Change-Id: I21ca3964ba7508c441582276120a9cf93425cf30
---

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))