Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754286Ab2FSMkR (ORCPT ); Tue, 19 Jun 2012 08:40:17 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:54214 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752209Ab2FSMkO (ORCPT ); Tue, 19 Jun 2012 08:40:14 -0400 From: "benjamin.tissoires" To: "benjamin.tissoires" , Dmitry Torokhov , Henrik Rydberg , Jiri Kosina , Stephane Chatty , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] HID: hid-multitouch: support arrays for the split of the touches in a report Date: Tue, 19 Jun 2012 14:39:53 +0200 Message-Id: <1340109594-10732-2-git-send-email-benjamin.tissoires@gmail.com> X-Mailer: git-send-email 1.7.10.2 In-Reply-To: <1340109594-10732-1-git-send-email-benjamin.tissoires@gmail.com> References: <1340109594-10732-1-git-send-email-benjamin.tissoires@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1301 Lines: 38 From: Benjamin Tissoires Win8 certification introduced the ability to transmit two X and two Y per touch. The specification precises that it must be in an array, with a report count == 2. This test guarantees that we split the touches on the last element in this array. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-multitouch.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 9a3891e..a5ef877 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -601,7 +601,10 @@ static int mt_event(struct hid_device *hid, struct hid_field *field, return 0; } - if (usage->hid == td->last_slot_field) + if (usage->hid == td->last_slot_field && + usage == &field->usage[field->maxusage - 1]) + /* we only take into account the last report + * of a field if report_count > 1 */ mt_complete_slot(td); if (field->index == td->last_field_index -- 1.7.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/