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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-11-19 23:33:07 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-11-25 00:42:13 -0800 |
| commit | d0ab54783f2de0c216115333eca1a8d3d5c3e75b (patch) | |
| tree | a4c8f2cb65c0f7c844332e9819ad6973ee32d1ff /drivers | |
| parent | bce4f9e764c36bc35dd5c9cf9e057c09f422397d (diff) | |
| download | linux-d0ab54783f2de0c216115333eca1a8d3d5c3e75b.tar.bz2 | |
Input: elantech - trust firmware about trackpoint presence
Only try to parse data as coming from trackpoint if firmware told us that
trackpoint is present.
Fixes commit caeb0d37fa3e387eb0dd22e5d497523c002033d1
Reported-and-tested-by: Marcus Overhagen <marcus.overhagen@gmail.com>
Reported-and-tested-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 3fcb6b3cb0bd..f2b978026407 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -428,14 +428,6 @@ static void elantech_report_trackpoint(struct psmouse *psmouse, int x, y; u32 t; - if (dev_WARN_ONCE(&psmouse->ps2dev.serio->dev, - !tp_dev, - psmouse_fmt("Unexpected trackpoint message\n"))) { - if (etd->debug == 1) - elantech_packet_dump(psmouse); - return; - } - t = get_unaligned_le32(&packet[0]); switch (t & ~7U) { @@ -793,7 +785,7 @@ static int elantech_packet_check_v4(struct psmouse *psmouse) unsigned char packet_type = packet[3] & 0x03; bool sanity_check; - if ((packet[3] & 0x0f) == 0x06) + if (etd->tp_dev && (packet[3] & 0x0f) == 0x06) return PACKET_TRACKPOINT; /* |