check return value for libudev/udev_monitor_filter_add_match_subsystem_devtype

Signed-off-by: weizhixiang <1138871845@qq.com>

diff --git a/src/udev-seat.c b/src/udev-seat.c
index 28b21b6ed509560476781b70c5c5b598f6bb7426..20a3f0274f8f08abb8a9d4a55272e5e8002b145a 100644 (file)
--- a/src/udev-seat.c
+++ b/src/udev-seat.c
@@ -289,8 +289,11 @@ udev_input_enable(struct libinput *libinput)
                return -1;
        }
 
-       udev_monitor_filter_add_match_subsystem_devtype(input->udev_monitor,
-                       "input", NULL);
+       if (udev_monitor_filter_add_match_subsystem_devtype(
+                               input->udev_monitor, "input", NULL)) {
+               log_info(libinput, "udev: failed to set up filter\n");
+               return -1;
+       }
 
        if (udev_monitor_enable_receiving(input->udev_monitor)) {
                log_info(libinput, "udev: failed to bind the udev monitor\n");