Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Benjamin Tissoires <> | Subject | [PATCH v2 3/7] Input: synaptics - do not retrieve the board id on old firmwares | Date | Fri, 6 Feb 2015 15:04:31 -0500 |
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The board id capability has been added in firmware 7.5.
Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.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
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