[Devel] [PATCH vz10 3/5] selftests: vDSO: vdso_test_getrandom: Avoid -Wunused

[Eva Kurchatova]

From: Thomas Weißschuh <thomas.weissschuh at linutronix.de>

vgetrandom_put_state() and the variable "ret" in kselftest() are unused.

Drop the variable "ret". Suppress the warning for  vgetrandom_put_state()
as it is meant as an example for libc implementors.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh at linutronix.de>
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
Link: https://lore.kernel.org/all/20250611-selftests-vdso-fixes-v3-4-e62e37a6bcf5@linutronix.de

(cherry picked from commit b8ae430871254f95dd81dcff01828be3f6b24a57)
Signed-off-by: Eva Kurchatova <eva.kurchatova at virtuozzo.com>

https://virtuozzo.atlassian.net/browse/VSTOR-134200
Feature: fix selftests
---
 tools/testing/selftests/vDSO/vdso_test_getrandom.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vDSO/vdso_test_getrandom.c b/tools/testing/selftests/vDSO/vdso_test_getrandom.c
index 95057f7567db..7246b0a4bbd4 100644
--- a/tools/testing/selftests/vDSO/vdso_test_getrandom.c
+++ b/tools/testing/selftests/vDSO/vdso_test_getrandom.c
@@ -101,6 +101,7 @@ static void *vgetrandom_get_state(void)
 	return state;
 }
 
+__attribute__((unused)) /* Example for libc implementors */
 static void vgetrandom_put_state(void *state)
 {
 	if (!state)
@@ -265,7 +266,7 @@ static void kselftest(void)
 	}
 	for (;;) {
 		struct ptrace_syscall_info info = { 0 };
-		int status, ret;
+		int status;
 		ksft_assert(waitpid(child, &status, 0) >= 0);
 		if (WIFEXITED(status)) {
 			ksft_assert(WEXITSTATUS(status) == 0);
-- 
2.54.0