[PATCH 2/2] raw/ifpga/base: fix mmap retcode check fail

[Chengwen Feng]

The MAP_FAILED should be used to determine whether the mapping is
successful.

Fixes: e41856b515ce ("raw/ifpga/base: enhance driver reliability in 
multi-process")
Cc: sta...@dpdk.org

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 drivers/raw/ifpga/base/opae_hw_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/raw/ifpga/base/opae_hw_api.c 
b/drivers/raw/ifpga/base/opae_hw_api.c
index 1117c3e160..6d48d227d6 100644
--- a/drivers/raw/ifpga/base/opae_hw_api.c
+++ b/drivers/raw/ifpga/base/opae_hw_api.c
@@ -380,7 +380,7 @@ static pthread_mutex_t *opae_adapter_mutex_open(struct 
opae_adapter *adapter)
                                PROT_READ | PROT_WRITE, MAP_SHARED,
                                shm_id, 0);
                adapter->lock = (pthread_mutex_t *)ptr;
-               if (ptr) {
+               if (ptr != MAP_FAILED) {
                        dev_info(NULL,
                                        "shared memory %s address is %p\n",
                                        shm_name, ptr);
@@ -499,7 +499,7 @@ static void *opae_adapter_shm_alloc(struct opae_adapter 
*adapter)
                adapter->shm.size = size;
                adapter->shm.ptr = mmap(NULL, size, PROT_READ | PROT_WRITE,
                                                        MAP_SHARED, shm_id, 0);
-               if (adapter->shm.ptr) {
+               if (adapter->shm.ptr != MAP_FAILED) {
                        dev_info(NULL,
                                        "shared memory %s address is %p\n",
                                        shm_name, adapter->shm.ptr);
-- 
2.17.1