grep|cut pipe will hang when there is no input for grep
Signed-off-by: Lu Dai <dai.lu@xxxxxxxxxxx>
---
tools/testing/selftests/kselftest_deps.sh | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/kselftest_deps.sh b/tools/testing/selftests/kselftest_deps.sh
index de59cc8f03c3..487e49fdf2a6 100755
--- a/tools/testing/selftests/kselftest_deps.sh
+++ b/tools/testing/selftests/kselftest_deps.sh
@@ -244,6 +244,7 @@ l4_test()
l5_test()
{
tests=$(find $(dirname "$test") -type f -name "*.mk")
+ [[ -z "${tests// }" ]] && return
test_libs=$(grep "^IOURING_EXTRA_LIBS +\?=" $tests | \
cut -d "=" -f 2)
--
2.34.1
