HID: lenovo: Restrict detection of patched firmware only to USB cptkbd
authorMikhail Khvainitski <me@khvoinitsky.org>
Tue, 12 Dec 2023 13:31:48 +0000 (15:31 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 20 Dec 2023 16:01:43 +0000 (17:01 +0100)
commitb89b7c7635705e0b1661e0a2a5965560ac37a0f2
treed3c29391a81b436b5f44b21517fa4f1d6902844c
parent8715fe2fc1e8b462b29381d342ab1ecd895d2637
HID: lenovo: Restrict detection of patched firmware only to USB cptkbd

[ Upstream commit 43527a0094c10dfbf0d5a2e7979395a38de3ff65 ]

Commit 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw on cptkbd and
stop applying workaround") introduced a regression for ThinkPad
TrackPoint Keyboard II which has similar quirks to cptkbd (so it uses
the same workarounds) but slightly different so that there are
false-positives during detecting well-behaving firmware. This commit
restricts detecting well-behaving firmware to the only model which
known to have one and have stable enough quirks to not cause
false-positives.

Fixes: 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw on cptkbd and stop applying workaround")
Link: https://lore.kernel.org/linux-input/ZXRiiPsBKNasioqH@jekhomev/
Link: https://bbs.archlinux.org/viewtopic.php?pid=2135468#p2135468
Signed-off-by: Mikhail Khvainitski <me@khvoinitsky.org>
Tested-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/hid/hid-lenovo.c