This is a note to let you know that I've just added the patch titled
HID: input: fix uclogic tablets
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
hid-input-fix-uclogic-tablets.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8db8be9cfc89935c97d791c7e6264e710a7e8a56 Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Date: Mon, 22 Aug 2022 08:22:47 +0200
Subject: HID: input: fix uclogic tablets
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
commit 8db8be9cfc89935c97d791c7e6264e710a7e8a56 upstream.
commit 87562fcd1342 ("HID: input: remove the need for HID_QUIRK_INVERT")
made the assumption that it was the only one handling tablets and thus
kept an internal state regarding the tool.
Turns out that the uclogic driver has a timer to release the in range
bit, effectively making hid-input ignoring all in range information
after the very first one.
Fix that by having a more rationale approach which consists in forwarding
every event and let the input stack filter out the duplicates.
Reported-by: Stefan Hansson <newbie13xd@xxxxxxxxx>
Fixes: 87562fcd1342 ("HID: input: remove the need for HID_QUIRK_INVERT")
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-input.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1532,7 +1532,10 @@ void hidinput_hid_event(struct hid_devic
* assume ours
*/
if (!report->tool)
- hid_report_set_tool(report, input, usage->code);
+ report->tool = usage->code;
+
+ /* drivers may have changed the value behind our back, resend it */
+ hid_report_set_tool(report, input, report->tool);
} else {
hid_report_release_tool(report, input, usage->code);
}
Patches currently in stable-queue which might be from benjamin.tissoires@xxxxxxxxxx are
queue-5.19/hid-input-fix-uclogic-tablets.patch
queue-5.19/hid-steam-prevent-null-pointer-dereference-in-steam_-recv-send-_report.patch
