Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946050AbbFSVPw (ORCPT ); Fri, 19 Jun 2015 17:15:52 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:51618 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756114AbbFSUjP (ORCPT ); Fri, 19 Jun 2015 16:39:15 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede , Benjamin Tissoires , Dmitry Torokhov Subject: [PATCH 4.0 052/105] Input: alps - do not reduce trackpoint speed by half Date: Fri, 19 Jun 2015 13:35:42 -0700 Message-Id: <20150619203559.738376869@linuxfoundation.org> X-Mailer: git-send-email 2.4.4 In-Reply-To: <20150619203558.187802739@linuxfoundation.org> References: <20150619203558.187802739@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1729 Lines: 47 4.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans de Goede commit 088df2ccef75754cc16a6ba31829d23bcb2b68ed upstream. On some v7 devices (e.g. Lenovo-E550) the deltas reported are typically only in the 0-1 range dividing this by 2 results in a range of 0-0. And even for v7 devices where this does not lead to making the trackstick entirely unusable, it makes it twice as slow as before we added v7 support and were using the ps/2 mouse emulation of the dual point setup. If some kind of generic slowdown is actually necessary for some devices, then that belongs in userspace, not in the kernel. Reported-and-tested-by: Rico Moorman Signed-off-by: Hans de Goede Reviewed-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/input/mouse/alps.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -1042,9 +1042,8 @@ static void alps_process_trackstick_pack right = (packet[1] & 0x02) >> 1; middle = (packet[1] & 0x04) >> 2; - /* Divide 2 since trackpoint's speed is too fast */ - input_report_rel(dev2, REL_X, (char)x / 2); - input_report_rel(dev2, REL_Y, -((char)y / 2)); + input_report_rel(dev2, REL_X, (char)x); + input_report_rel(dev2, REL_Y, -((char)y)); input_report_key(dev2, BTN_LEFT, left); input_report_key(dev2, BTN_RIGHT, right); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/