Avoid pointer type value compared with 0 to make code clear.

./tools/testing/selftests/mm/mseal_test.c:486:27-28: WARNING comparing pointer 
to 0.
./tools/testing/selftests/mm/mseal_test.c:1399:29-30: WARNING comparing pointer 
to 0.

Reported-by: Abaci Robot <[email protected]>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9552
Signed-off-by: Jiapeng Chong <[email protected]>
---
 tools/testing/selftests/mm/mseal_test.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/mm/mseal_test.c 
b/tools/testing/selftests/mm/mseal_test.c
index a818f010de47..50a5b9b9399e 100644
--- a/tools/testing/selftests/mm/mseal_test.c
+++ b/tools/testing/selftests/mm/mseal_test.c
@@ -481,9 +481,8 @@ static void test_seal_zero_address(void)
        int prot;
 
        /* use mmap to change protection. */
-       ptr = sys_mmap(0, size, PROT_NONE,
-                       MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
-       FAIL_TEST_IF_FALSE(ptr == 0);
+       ptr = sys_mmap(0, size, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE | 
MAP_FIXED, -1, 0);
+       FAIL_TEST_IF_FALSE(!ptr);
 
        size = get_vma_size(ptr, &prot);
        FAIL_TEST_IF_FALSE(size == 4 * page_size);
@@ -1390,13 +1389,12 @@ static void test_seal_mremap_move_fixed_zero(bool seal)
        /*
         * MREMAP_FIXED can move the mapping to zero address
         */
-       ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED,
-                       0);
+       ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED, 
0);
        if (seal) {
                FAIL_TEST_IF_FALSE(ret2 == MAP_FAILED);
                FAIL_TEST_IF_FALSE(errno == EPERM);
        } else {
-               FAIL_TEST_IF_FALSE(ret2 == 0);
+               FAIL_TEST_IF_FALSE(!ret2);
 
        }
 
-- 
2.32.0.3.g01195cf9f


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