[dpdk-stable] patch 'eal: explicit cast of builtin for bsf32' has been queued to stable release 18.02.2

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 18.02.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/16/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From 3cc1184a1fbf1759137afa35a3422c23ab48ad5d Mon Sep 17 00:00:00 2001
From: Andy Green <andy at warmcat.com>
Date: Sat, 12 May 2018 09:58:57 +0800
Subject: [PATCH] eal: explicit cast of builtin for bsf32

[ upstream commit 54a93341ccaaf3665352ddad0807cf3ed40c36f9 ]

rte_common.h:416:9:
warning: conversion to 'uint32_t' {aka 'unsigned int'} from
'int' may change the sign of the result [-Wsign-conversion]
  return __builtin_ctz(v);
         ^~~~~~~~~~~~~~~~

The builtin is defined to return int, but we want to
return it as uint32_t.  Its only defined valid return
values are positive integers or zero, which is OK for
uint32_t.  So just add an explicit cast.

Fixes: 03f6bced5bba ("eal: use intrinsic function")

Signed-off-by: Andy Green <andy at warmcat.com>
Reviewed-by: Stephen Hemminger <stephen at networkplumber.org>
---
 lib/librte_eal/common/include/rte_common.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index c7803e41c..00478007e 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -320,7 +320,7 @@ rte_align64pow2(uint64_t v)
 static inline uint32_t
 rte_bsf32(uint32_t v)
 {
-	return __builtin_ctz(v);
+	return (uint32_t)__builtin_ctz(v);
 }
 
 /**
-- 
2.14.2