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The ThinkPad L440 also uses board id 2722, but does not have the SMBus
initialization problem seen on the T440p. On the L440, the SMBus
companion becomes available shortly after psmouse probes, allowing the
touchpad to use SMBus/RMI4 normally.
The T440p's quirk is currently applied to all Synaptics touchpads with
board id 2722, unnecessarily disabling SMBus InterTouch on the L440,
as reported by Daniel Salmun.
Restrict the quirk to PNP ID LEN0036, which identifies the T440p, so
that other devices sharing board id 2722 retain their normal
SMBus/RMI4 operation.
Reported-by: Daniel Salmun <salmundani@gmail.com>
Link: https://lore.kernel.org/all/20260925230039.236786-1-salmundani@gmail.com/
Fixes: 26eb3d92c7a4 ("Input: synaptics - disable InterTouch on ThinkPad T440p (board id 2722)")
Cc: stable@vger.kernel.org
Signed-off-by: Raphaël Larocque <rlarocque@disroot.org>
Link: https://patch.msgid.link/20260927005810.85971-1-rlarocque@disroot.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Lenovo ThinkPad T490 has a Synaptics Touchpad that supports SMBus/RMI4
mode, but is not listed in smbus_pnp_ids table.
Add LEN205b to smbus_pnp_ids[] passlist.
Reported-by: John Rosencutter <rosencutter@gmail.com>
Closes: https://lore.kernel.org/all/CAOGuaRh025eKcBf9P8UrvtXNp68vQ0HVF2EbNMp-kpdaC1HNpA@mail.gmail.com/
Signed-off-by: Lovekesh Solanki <lovekeshsolanki00@gmail.com>
Link: https://patch.msgid.link/20260920200730.1836756-1-lovekeshsolanki00@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The "ti,poll-period" property is documented as a normal uint32 cell.
The driver used a u64 helper, which makes the helper type disagree with
the schema even though the stored value is still small.
Read "ti,poll-period" with the u32 helper matching the documented DT
cell size.
Assisted-by: Codex:gpt-5-5
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260831194352.1185860-1-robh@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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