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| author |   Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2015-03-08 22:33:36 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-08 23:36:52 -0700 |
| commit | b57a7128be24062b5b5b26032b7cd58f1651547e (patch) | |
| tree | 259005279ff39455242470094f2c2c083779034b /drivers/input/mouse/synaptics.c | |
| parent | Input: synaptics - handle spurious release of trackstick buttons (diff) | |
| download | linux-dev-b57a7128be24062b5b5b26032b7cd58f1651547e.tar.xz linux-dev-b57a7128be24062b5b5b26032b7cd58f1651547e.zip | |
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>
Diffstat (limited to 'drivers/input/mouse/synaptics.c')
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 4 |
1 files changed, 4 insertions, 0 deletions
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]; |