[PATCH 1/2] eal: fix constraints on stdatomic API

[Jie Hai <haijie1@huawei.com>]

The first parameter of rte_atomic_exchange_explicit() must be a
pointer to _Atomic type. If run command "meson setup --werror
-Denable_stdatomic=true build && ninja -C build", error will occur.
Thia patch fixes it.

Fixes: 1ec6a845b5cb ("eal: use stdatomic API in public headers")
Cc: stable@dpdk.org

Signed-off-by: Jie Hai <haijie1@huawei.com>
---
 app/test/test_atomic.c               |  6 +++---
 lib/eal/include/generic/rte_atomic.h | 12 ++++++------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/app/test/test_atomic.c b/app/test/test_atomic.c
index db07159e81ab..c3cb3ae0ea57 100644
--- a/app/test/test_atomic.c
+++ b/app/test/test_atomic.c
@@ -347,9 +347,9 @@ typedef union {
 const uint8_t CRC8_POLY = 0x91;
 uint8_t crc8_table[256];
 
-volatile uint16_t token16;
-volatile uint32_t token32;
-volatile uint64_t token64;
+volatile RTE_ATOMIC(uint16_t) token16;
+volatile RTE_ATOMIC(uint32_t) token32;
+volatile RTE_ATOMIC(uint64_t) token64;
 
 static void
 build_crc8_table(void)
diff --git a/lib/eal/include/generic/rte_atomic.h b/lib/eal/include/generic/rte_atomic.h
index 0e639dad76a4..38c3b41f9c68 100644
--- a/lib/eal/include/generic/rte_atomic.h
+++ b/lib/eal/include/generic/rte_atomic.h
@@ -207,11 +207,11 @@ rte_atomic16_cmpset(volatile uint16_t *dst, uint16_t exp, uint16_t src)
  *   The original value at that location
  */
 static inline uint16_t
-rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val);
+rte_atomic16_exchange(volatile RTE_ATOMIC(uint16_t) *dst, uint16_t val);
 
 #ifdef RTE_FORCE_INTRINSICS
 static inline uint16_t
-rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val)
+rte_atomic16_exchange(volatile RTE_ATOMIC(uint16_t) *dst, uint16_t val)
 {
 	return rte_atomic_exchange_explicit(dst, val, rte_memory_order_seq_cst);
 }
@@ -492,11 +492,11 @@ rte_atomic32_cmpset(volatile uint32_t *dst, uint32_t exp, uint32_t src)
  *   The original value at that location
  */
 static inline uint32_t
-rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
+rte_atomic32_exchange(volatile RTE_ATOMIC(uint32_t) *dst, uint32_t val);
 
 #ifdef RTE_FORCE_INTRINSICS
 static inline uint32_t
-rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val)
+rte_atomic32_exchange(volatile RTE_ATOMIC(uint32_t) *dst, uint32_t val)
 {
 	return rte_atomic_exchange_explicit(dst, val, rte_memory_order_seq_cst);
 }
@@ -776,11 +776,11 @@ rte_atomic64_cmpset(volatile uint64_t *dst, uint64_t exp, uint64_t src)
  *   The original value at that location
  */
 static inline uint64_t
-rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
+rte_atomic64_exchange(volatile RTE_ATOMIC(uint64_t) *dst, uint64_t val);
 
 #ifdef RTE_FORCE_INTRINSICS
 static inline uint64_t
-rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val)
+rte_atomic64_exchange(volatile RTE_ATOMIC(uint64_t) *dst, uint64_t val)
 {
 	return rte_atomic_exchange_explicit(dst, val, rte_memory_order_seq_cst);
 }
-- 
2.30.0