IOHIDManagerScheduleWithRunLoop(hidManager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
IOReturn ret = IOHIDManagerOpen(hidManager, kIOHIDOptionsTypeNone);
- if (ret == kIOReturnSuccess) {
+ if (ret != kIOReturnSuccess) {
[[NSAlert alertWithMessageText:@"Input devices are unavailable"
defaultButton:nil
alternateButton:nil