From 7dee61662184f5828ddfcd36f4189d9cb7a94bc0 Mon Sep 17 00:00:00 2001
From: weizhixiang <1138871845@qq.com>
Date: Tue, 15 Sep 2020 16:03:44 +0800
Subject: [PATCH] check return value for
 libudev/udev_monitor_filter_add_match_subsystem_devtype

Signed-off-by: weizhixiang <1138871845@qq.com>
---
 src/udev-seat.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/udev-seat.c b/src/udev-seat.c
index 28b21b6e..20a3f027 100644
--- 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");