There exists versions of modprobe out there which are so old that modprobe --help isn't a thing. They're certainly not going to support modprobe --remove-patiently, so test to make sure modprobe --help works to suppress a spurious warning. Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> Fixes: 405c21d40aa1 ("common/module: add patient module rmmod support") Reported-by: Leah Rumancik <leah.rumancik@xxxxxxxxx> Cc: Luis Chamberlain <mcgrof@xxxxxxxxxx> --- common/config | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/common/config b/common/config index be741c6b..cac528e8 100644 --- a/common/config +++ b/common/config @@ -256,7 +256,7 @@ export UDEV_SETTLE_PROG # Set MODPROBE_PATIENT_RM_TIMEOUT_SECONDS to "forever" if you want the patient # modprobe removal to run forever trying to remove a module. MODPROBE_REMOVE_PATIENT="" -modprobe --help | grep -q -1 "remove-patiently" +modprobe --help >& /dev/null && modprobe --help | grep -q -1 "remove-patiently" if [[ $? -ne 0 ]]; then if [[ -z "$MODPROBE_PATIENT_RM_TIMEOUT_SECONDS" ]]; then # We will open code our own implementation of patient module -- 2.31.0