[PATCH] include/uapi/linux/swab.h: define a silent macro to avoid sparse error

Bilel DRIRA
2015-06-14T22:24:21Z

define a silent macro when _CHECKER_ is defined.
This change fixes the following sparse errors:

include/uapi/linux/swab.h:60:16: error: undefined identifier '__builtin_bswap32'
include/uapi/linux/swab.h:60:33: error: not a function <noident>
include/uapi/linux/swab.h:71:16: error: undefined identifier '__builtin_bswap64'
include/uapi/linux/swab.h:71:33: error: not a function <noident>
include/uapi/linux/swab.h:60:33: error: not a function <noident>

Signed-off-by: Bilel DRIRA <bilel.dr@gmail.com>
---
include/uapi/linux/swab.h | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 0e011eb..c04de49 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -5,6 +5,18 @@
#include <linux/compiler.h>
#include <asm/swab.h>

+#ifdef __CHECKER__
+
+#ifdef __HAVE_BUILTIN_BSWAP64__
+#define __builtin_bswap64(val) (0)
+#endif
+
+#ifdef __HAVE_BUILTIN_BSWAP32__
+#define __builtin_bswap32(val) (0)
+#endif
+
+#endif /* __CHECKER__ */
+
/*
* casts are necessary for constants, because we never know how for sure
* how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way.
--
1.7.9.5