diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-11-24 12:58:46 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-12-17 15:24:32 -0800 |
| commit | ec6184b1c717b8768122e25fe6d312f609cc1bb4 (patch) | |
| tree | 5f19e439bb2b883947767f345c833b8e416fa787 | |
| parent | c378b5119eb0ea25bfd3348a06b51fca654d9903 (diff) | |
Input: psmouse - limit protocols that we try on passthrough ports
PS/2 protocol is slow, and using it with pass-through port (where we
encapsulate PS/2 into PS/2) is slower yet so it takes quite a bit of time
to do full protocol discovery for device attached to a pass-through port.
However, so far we have not see anything but trackpoints or basic PS/2
mice on pass-through ports, so let's limit protocols that we probe there
to Trackpoint, IntelliMouse Explorer, IntelliMouse, and bare PS/2 protocol,
and avoid other extended protocols, such as Synaptics, ALPS, etc.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Marcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: Till <till2.schaefer@uni-dortmund.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/mouse/psmouse-base.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index 316105e30064..f12df771eeb2 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -119,6 +119,7 @@ struct psmouse_protocol { enum psmouse_type type; bool maxproto; bool ignore_parity; /* Protocol should ignore parity errors from KBC */ + bool try_passthru; /* Try protocol also on passthrough ports */ const char *name; const char *alias; int (*detect)(struct psmouse *, bool); @@ -691,6 +692,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .maxproto = true, .ignore_parity = true, .detect = ps2bare_detect, + .try_passthru = true, }, #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP { @@ -728,6 +730,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .maxproto = true, .ignore_parity = true, .detect = intellimouse_detect, + .try_passthru = true, }, { .type = PSMOUSE_IMEX, @@ -736,6 +739,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .maxproto = true, .ignore_parity = true, .detect = im_explorer_detect, + .try_passthru = true, }, #ifdef CONFIG_MOUSE_PS2_SYNAPTICS { @@ -777,6 +781,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .name = "TPPS/2", .alias = "trackpoint", .detect = trackpoint_detect, + .try_passthru = true, }, #endif #ifdef CONFIG_MOUSE_PS2_TOUCHKIT @@ -933,6 +938,11 @@ static bool psmouse_try_protocol(struct psmouse *psmouse, if (!proto) return false; + if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU && + !proto->try_passthru) { + return false; + } + if (set_properties) psmouse_apply_defaults(psmouse); |