diff options
Diffstat (limited to 'touchpad_only_use_negative_pressure_change_check.diff')
| -rw-r--r-- | touchpad_only_use_negative_pressure_change_check.diff | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/touchpad_only_use_negative_pressure_change_check.diff b/touchpad_only_use_negative_pressure_change_check.diff new file mode 100644 index 000000000000..5880b9054385 --- /dev/null +++ b/touchpad_only_use_negative_pressure_change_check.diff @@ -0,0 +1,42 @@ +From 2f5231cc88fccf389a78270d827f6c9201b86794 Mon Sep 17 00:00:00 2001 +From: Peter Hutterer <peter.hutterer@who-t.net> +Date: Wed, 18 May 2016 07:35:36 +1000 +Subject: touchpad: only use negative pressure change check on Lenovo *50 and + *60 series + +This was introduced for bug 94379 - an X1 Carbon 3rd. Other touchpads have +different pressure change ranges, causing this condition to trigger +randomly and resulting in a jerky pointer motion. + +For now, reduce the check to the *50 and *60 series touchpads until we have +data for more touchpads that we can add one-by-one. + +https://bugs.freedesktop.org/show_bug.cgi?id=95393 + +Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> +Reviewed-by: Hans de Goede <hdegoede@redhat.com> + +diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c +index 4c8c3a3..c854043 100644 +--- a/src/evdev-mt-touchpad.c ++++ b/src/evdev-mt-touchpad.c +@@ -928,6 +928,7 @@ tp_detect_jumps(const struct tp_dispatch *tp, struct tp_touch *t) + static void + tp_process_state(struct tp_dispatch *tp, uint64_t time) + { ++ struct evdev_device *device = tp->device; + struct tp_touch *t; + unsigned int i; + bool restart_filter = false; +@@ -953,7 +954,8 @@ tp_process_state(struct tp_dispatch *tp, uint64_t time) + if (!t->dirty) + continue; + +- if (t->pressure_delta < -7) ++ if ((device->model_flags & EVDEV_MODEL_LENOVO_T450_TOUCHPAD) && ++ t->pressure_delta < -7) + tp_motion_history_reset(t); + + if (tp_detect_jumps(tp, t)) { +-- +cgit v0.10.2 |