[dpdk-dev] [PATCH v5 21/21] rte_byteorder.h: explicit cast for return promotion

[Andy Green]

/projects/lagopus/src/dpdk/build/include/generic/
rte_byteorder.h: In function 'rte_constant_bswap16':
/projects/lagopus/src/dpdk/build/include/generic/
rte_byteorder.h:54:45: warning: conversion from
'int' to 'uint16_t' {aka 'short unsigned int'}
may change value [-Wconversion]
  ((((uint16_t)(v) & UINT16_C(0x00ff)) << 8) | \
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
   (((uint16_t)(v) & UINT16_C(0xff00)) >> 8))
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/projects/lagopus/src/dpdk/build/include/generic/
rte_byteorder.h:126:9: note: in expansion of macro
'RTE_STATIC_BSWAP16'
  return RTE_STATIC_BSWAP16(x);
         ^~~~~~~~~~~~~~~~~~

The other two sizes are going to be afflicted the
same, so get the same fix.

Signed-off-by: Andy Green <andy at warmcat.com>
---
 .../common/include/generic/rte_byteorder.h         |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/librte_eal/common/include/generic/rte_byteorder.h b/lib/librte_eal/common/include/generic/rte_byteorder.h
index 9bed85cca..7d9a1463c 100644
--- a/lib/librte_eal/common/include/generic/rte_byteorder.h
+++ b/lib/librte_eal/common/include/generic/rte_byteorder.h
@@ -123,7 +123,7 @@ typedef uint64_t rte_le64_t; /**< 64-bit little-endian value. */
 static inline uint16_t
 rte_constant_bswap16(uint16_t x)
 {
-	return RTE_STATIC_BSWAP16(x);
+	return (uint16_t)RTE_STATIC_BSWAP16(x);
 }
 
 /*
@@ -135,7 +135,7 @@ rte_constant_bswap16(uint16_t x)
 static inline uint32_t
 rte_constant_bswap32(uint32_t x)
 {
-	return RTE_STATIC_BSWAP32(x);
+	return (uint32_t)RTE_STATIC_BSWAP32(x);
 }
 
 /*
@@ -147,7 +147,7 @@ rte_constant_bswap32(uint32_t x)
 static inline uint64_t
 rte_constant_bswap64(uint64_t x)
 {
-	return RTE_STATIC_BSWAP64(x);
+	return (uint64_t)RTE_STATIC_BSWAP64(x);
 }