34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
|
|
Date: Sun, 8 Mar 2015 22:33:36 -0700
|
|
Subject: [PATCH] Input: synaptics - do not retrieve the board id on old
|
|
firmwares
|
|
|
|
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>
|
|
Acked-by: Hans de Goede <hdegoede@redhat.com>
|
|
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
|
|
---
|
|
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 2f42a712f3e0..2176874a41b1 100644
|
|
--- a/drivers/input/mouse/synaptics.c
|
|
+++ b/drivers/input/mouse/synaptics.c
|
|
@@ -250,6 +250,10 @@ 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
|
|
|