From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: [PATCH] Input: psmouse - clean up Cypress probe Date: Thu, 3 Dec 2015 15:56:48 -0800 Message-ID: <20151203235648.GA29409@dtor-ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pa0-f42.google.com ([209.85.220.42]:36826 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751028AbbLCX4w (ORCPT ); Thu, 3 Dec 2015 18:56:52 -0500 Content-Disposition: inline Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-input@vger.kernel.org, Hans de Goede Cc: linux-kernel@vger.kernel.org When Cypress protocol support is disabled cypress_init() is a stub that always returns -ENOSYS, so there is not point in testing for CONFIG_MOUSE_PS2_CYPRESS after we decided that we are dealing with a Cypress device. Also, we should only be calling cypress_detect() when set_properties argument is "true", like with other protocols. There is a slight change in behavior to make follow-up patches more uniform: when we detect Cypress but its initialization fails, instead of immediately returning PSMOUSE_PS2 protocol we now continue trying IntelliMouse [Explorer]. Given that Cypress devices only have issue with Sentelic probes probing Imtellimouse should be safe. Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/psmouse-base.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index c2bd866..978ba0b 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -836,19 +836,15 @@ static int psmouse_extensions(struct psmouse *psmouse, * Trackpads. */ if (max_proto > PSMOUSE_IMEX && - cypress_detect(psmouse, set_properties) == 0) { - if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS)) { - if (cypress_init(psmouse) == 0) - return PSMOUSE_CYPRESS; - - /* - * Finger Sensing Pad probe upsets some modules of - * Cypress Trackpad, must avoid Finger Sensing Pad - * probe if Cypress Trackpad device detected. - */ - return PSMOUSE_PS2; - } + psmouse_do_detect(cypress_detect, psmouse, set_properties) == 0) { + if (!set_properties || cypress_init(psmouse) == 0) + return PSMOUSE_CYPRESS; + /* + * Finger Sensing Pad probe upsets some modules of + * Cypress Trackpad, must avoid Finger Sensing Pad + * probe if Cypress Trackpad device detected. + */ max_proto = PSMOUSE_IMEX; } -- 2.6.0.rc2.230.g3dd15c0 -- Dmitry