From 3a4f0cc693cd3d80e66a255f0bff0e2c0461eef1 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 15 Sep 2021 15:28:07 -0600 Subject: selftests:kvm: fix get_trans_hugepagesz() ignoring fscanf() return warn MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Acked-by: Paolo Bonzini Signed-off-by: Shuah Khan --- tools/testing/selftests/kvm/lib/test_util.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools/testing/selftests/kvm/lib/test_util.c') 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; -- cgit v1.2.3