Drop old Input workaround

Based on comments from the authors, this should be worked around in
libinput now.
This commit is contained in:
Laura Abbott 2019-10-14 10:03:12 -04:00
parent 418aac7518
commit bfc2ea1270
2 changed files with 0 additions and 49 deletions

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@ -1,47 +0,0 @@
From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Date: Thu, 16 Apr 2015 13:01:46 -0400
Subject: [PATCH] Input - synaptics: pin 3 touches when the firmware reports 3
fingers
Synaptics PS/2 touchpad can send only 2 touches in a report. They can
detect 4 or 5 and this information is valuable.
In commit 63c4fda (Input: synaptics - allocate 3 slots to keep stability
in image sensors), we allocate 3 slots, but we still continue to report
the 2 available fingers. That means that the client sees 2 used slots while
there is a total of 3 fingers advertised by BTN_TOOL_TRIPLETAP.
For old kernels this is not a problem because max_slots was 2 and libinput/
xorg-synaptics knew how to deal with that. Now that max_slot is 3, the
clients ignore BTN_TOOL_TRIPLETAP and count the actual used slots (so 2).
It then gets confused when receiving the BTN_TOOL_TRIPLETAP and DOUBLETAP
information, and goes wild.
We can pin the 3 slots until we get a total number of fingers below 2.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1212230
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
drivers/input/mouse/synaptics.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 3a32caf06bf1..58102970f94f 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -940,6 +940,14 @@ static void synaptics_report_mt_data(struct psmouse *psmouse,
input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
}
+ /* keep (slot count <= num_fingers) by pinning all slots */
+ if (num_fingers >= 3) {
+ for (i = 0; i < 3; i++) {
+ input_mt_slot(dev, i);
+ input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
+ }
+ }
+
input_mt_drop_unused(dev);
/* Don't use active slot count to generate BTN_TOOL events. */

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@ -495,8 +495,6 @@ Source5000: patch-5.%{base_sublevel}-git%{gitrev}.xz
# Standalone patches
# 100 - Generic long running patches
Patch122: Input-synaptics-pin-3-touches-when-the-firmware-repo.patch
# 200 - x86 / secureboot
# bz 1497559 - Make kernel MODSIGN code not error on missing variables