From: Shuah Khan skhan@linuxfoundation.org

[ Upstream commit 3a4f0cc693cd3d80e66a255f0bff0e2c0461eef1 ]

Fix get_trans_hugepagesz() to check fscanf() return value to get rid of the following warning:

lib/test_util.c: In function ‘get_trans_hugepagesz’: lib/test_util.c:138:2: warning: ignoring return value of ‘fscanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 138 | fscanf(f, "%ld", &size); | ^~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Shuah Khan skhan@linuxfoundation.org Acked-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/kvm/lib/test_util.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c index af1031fed97f..938cd423643e 100644 --- a/tools/testing/selftests/kvm/lib/test_util.c +++ b/tools/testing/selftests/kvm/lib/test_util.c @@ -129,13 +129,16 @@ size_t get_trans_hugepagesz(void) { size_t size; FILE *f; + int ret;

TEST_ASSERT(thp_configured(), "THP is not configured in host kernel");

f = fopen("/sys/kernel/mm/transparent_hugepage/hpage_pmd_size", "r"); TEST_ASSERT(f != NULL, "Error in opening transparent_hugepage/hpage_pmd_size");

- fscanf(f, "%ld", &size); + ret = fscanf(f, "%ld", &size); + ret = fscanf(f, "%ld", &size); + TEST_ASSERT(ret < 1, "Error reading transparent_hugepage/hpage_pmd_size"); fclose(f);

return size;