The board id capability has been added in firmware 7.5.
Cc: sta...@vger.kernel.org
Signed-off-by: Benjamin Tissoires <benjamin.tissoi...@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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