[PATCH blktests 1/2] loop/009: only skip on a genuinely unrecognized --ping option

udevadm control --ping can also fail when udevd is busy or unresponsive
not only when the option is genuinely unsupported. Treating any failure
as "unsupported" risked masking a real udevd problem behind a
misleading skip reason instead of letting the test run and report it.

Signed-off-by: Sebastian Chlad <[email protected]>
---
 tests/loop/009 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/loop/009 b/tests/loop/009
index d3c7991..944f53b 100755
--- a/tests/loop/009
+++ b/tests/loop/009
@@ -11,7 +11,7 @@ DESCRIPTION="check that LOOP_CONFIGURE sends uevents for partitions"
 QUICK=1
 
 requires() {
-	if ! udevadm control --ping >& /dev/null; then
+	if ! udevadm control --help 2>&1 | grep -q -- '--ping'; then
 		SKIP_REASONS+=("udevadm control does not support --ping option")
 	fi
 }
-- 
2.51.0