From: Ravi Kerur <rke...@gmail.com>
rte_is_power_of_2 returns true for 0 and 0 is not power_of_2.
Fix by checking for n.
Signed-off-by: Ravi Kerur <rkerur at gmail.com>
Acked-by: Neil Horman <nhorman at tuxdriver.com>
---
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 921b91f..8ac940c 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -203,7 +203,7 @@ extern int RTE_BUILD_BUG_ON_detected_error;
static inline int
rte_is_power_of_2(uint32_t n)
{
- return ((n-1) & n) == 0;
+ return n && !(n & (n - 1));
}
/**
--
2.1.0
