HID: Add a hid quirk for input sync override

As of lately, HID devices which send per-frame data split over several
HID reports have started to emerge. This patch adds a quirk which
allows the HID driver to take over the input layer synchronization,
and hence the control of the frame boundary.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 6c03dcc5760a..b186f6d0feba 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -659,6 +659,9 @@ void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 {
         struct hid_input *hidinput;
 
+        if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
+                return;
+
         list_for_each_entry(hidinput, &hid->inputs, list)
                 input_sync(hidinput->input);
 }