linux-kernel - [PATCH] hid/hid-multitouch: Keep latency normal on deactivate for reactivation gesture

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Message-ID: <20251106154636.985427-1-wse@tuxedocomputers.com>
Date: Thu,  6 Nov 2025 16:45:28 +0100
From: Werner Sembach <wse@...edocomputers.com>
To: Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>
Cc: Werner Sembach <wse@...edocomputers.com>,
	linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] hid/hid-multitouch: Keep latency normal on deactivate for reactivation gesture

Uniwill devices have a built in gesture in the touchpad to de- and
reactivate it by double taping the upper left corner. This gesture stops
working when latency is set to high, so this patch keeps the latency on
normal.

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
---
Or should I better implement this as a quirk?

 drivers/hid/hid-multitouch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 179dc316b4b51..df64cb6c41699 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1998,7 +1998,7 @@ static void mt_on_hid_hw_open(struct hid_device *hdev)
 
 static void mt_on_hid_hw_close(struct hid_device *hdev)
 {
-	mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE);
+	mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_NONE);
 }
 
 /*
-- 
2.43.0