include/linux/byteorder: Fix compilation of __constant_cpu_to_be32()

The macro __constant_cpu_to_be32() uses ___constant_swab32(), which for
some reason is not defined and causes the following error during
compilation:

  include/linux/byteorder/little_endian.h:28:52: warning:
    implicit declaration of function ‘___constant_swab32’;
    did you mean ‘__builtin_bswap32’? [-Wimplicit-function-declaration]
   #define __constant_cpu_to_be32(x) ((__force __be32)___constant_swab32((x)))

Declare all ___constant_swabXX() macros.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/include/linux/byteorder/swab.h b/include/linux/byteorder/swab.h
index 4334fa7..5efc252 100644 (file)
--- a/include/linux/byteorder/swab.h
+++ b/include/linux/byteorder/swab.h
@@ -39,6 +39,10 @@
                (__u64)(((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \
                (__u64)(((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56) ))
 
+#define ___constant_swab16(x) ___swab16(x)
+#define ___constant_swab32(x) ___swab32(x)
+#define ___constant_swab64(x) ___swab64(x)
+
 /*
  * provide defaults when no architecture-specific optimization is detected
  */