evdev: Fix select() call

It's not guaranteed that the eventfd is smaller than the monitor fd,
because fds are not always monotonically allocated. To select()
correctly in all cases, use the max between the monitor fd and eventfd.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp b/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
index 85e4973270..398d33eb78 100644
--- a/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
@@ -72,7 +72,7 @@ static void HotplugThreadFunc()
     FD_SET(monitor_fd, &fds);
     FD_SET(s_wakeup_eventfd, &fds);
 
-    int ret = select(monitor_fd + 1, &fds, nullptr, nullptr, nullptr);
+    int ret = select(std::max(monitor_fd, s_wakeup_eventfd) + 1, &fds, nullptr, nullptr, nullptr);
     if (ret < 1 || !FD_ISSET(monitor_fd, &fds))
       continue;