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Date: Fri, 6 Feb 2015 15:04:31 -0500 From: Benjamin Tissoires <benjamin.tissoires@...hat.com> To: Dmitry Torokhov <dmitry.torokhov@...il.com> Cc: Andrew Duggan <aduggan@...aptics.com>, Hans de Goede <hdegoede@...hat.com>, Peter Hutterer <peter.hutterer@...-t.net>, linux-input@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v2 3/7] Input: synaptics - do not retrieve the board id on old firmwares The board id capability has been added in firmware 7.5. Cc: stable@...r.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com> --- v2: - brand new drivers/input/mouse/synaptics.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index a033fc7..d7b2e93 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -253,6 +253,10 @@ static int synaptics_board_id(struct psmouse *psmouse) struct synaptics_data *priv = psmouse->private; unsigned char bid[3]; + /* firmwares prior 7.5 have no board_id encoded */ + if (SYN_ID_FULL(priv->identity) < 0x705) + return 0; + if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) return -1; priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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