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-rw-r--r--tools/testing/selftests/arm64/abi/ptrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/arm64/abi/ptrace.c b/tools/testing/selftests/arm64/abi/ptrace.c
index abe4d58d731d..4c941270d8de 100644
--- a/tools/testing/selftests/arm64/abi/ptrace.c
+++ b/tools/testing/selftests/arm64/abi/ptrace.c
@@ -47,7 +47,7 @@ static void test_tpidr(pid_t child)
/* ...write a new value.. */
write_iov.iov_len = sizeof(uint64_t);
- write_val[0] = read_val[0]++;
+ write_val[0] = read_val[0] + 1;
ret = ptrace(PTRACE_SETREGSET, child, NT_ARM_TLS, &write_iov);
ksft_test_result(ret == 0, "write_tpidr_one\n");