From 3eb4351af42bd8b6de20daab07b204a85c35248f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 9 Jul 2015 14:33:21 -0700 Subject: [PATCH] HID: input: call input_sync() when automatically releasing a key We need to emit EV_SYN/SYN_REPORT between key press and release, otherwise userspace is allowed to "swallow" the event. [jkosina@suse.com: Dmitry says that he's observing this behavior with Plantronics headset] Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina --- drivers/hid/hid-input.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 3511bbaba505..14aebe483219 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1163,8 +1163,11 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct input_event(input, usage->type, usage->code, value); - if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) + if ((field->flags & HID_MAIN_ITEM_RELATIVE) && + usage->type == EV_KEY && value) { + input_sync(input); input_event(input, usage->type, usage->code, 0); + } } void hidinput_report_event(struct hid_device *hid, struct hid_report *report) -- 2.20.1