eal: fix parentheses in alignment macros

Found an issue while using RTE_ALIGN_MUL_NEAR with an
expression, like as passed in estimate_tsc_freq().
RTE_ALIGN_MUL_FLOOR resulted in unexpected value as
parathesis are required to evaluate an expression.

Fixes: 5120203d753f ("eal: add macros to align value to multiple")
Cc: stable@dpdk.org
Signed-off-by: Harman Kalra <hkalra@marvell.com>

diff --git a/lib/librte_eal/include/rte_common.h b/lib/librte_eal/include/rte_common.h
index 586f815..8f487a5 100644 (file)
--- a/lib/librte_eal/include/rte_common.h
+++ b/lib/librte_eal/include/rte_common.h
@@ -304,7 +304,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
  * than the first parameter.
  */
 #define RTE_ALIGN_MUL_CEIL(v, mul) \
-       (((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
+       ((((v) + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
 
 /**
  * Macro to align a value to the multiple of given value. The resultant
@@ -312,7 +312,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
  * than the first parameter.
  */
 #define RTE_ALIGN_MUL_FLOOR(v, mul) \
-       ((v / ((typeof(v))(mul))) * (typeof(v))(mul))
+       (((v) / ((typeof(v))(mul))) * (typeof(v))(mul))
 
 /**
  * Macro to align value to the nearest multiple of the given value.
@@ -323,7 +323,7 @@ static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
        ({                                                      \
                typeof(v) ceil = RTE_ALIGN_MUL_CEIL(v, mul);    \
                typeof(v) floor = RTE_ALIGN_MUL_FLOOR(v, mul);  \
-               (ceil - v) > (v - floor) ? floor : ceil;        \
+               (ceil - (v)) > ((v) - floor) ? floor : ceil;    \
        })
 
 /**