Re: [PATCH] Input: synaptics - add LEN2058 to SMBus passlist for ThinkPad E490

[Dmitry Torokhov]

On Wed, May 13, 2026 at 12:57:44AM -0400, contacto@xxxxxxxxx wrote:
> From: Nicolás Bazaes <contacto@xxxxxxxxx>
> 
> The Lenovo ThinkPad E490 (PNP ID: LEN2058) has a Synaptics TM3471-020
> touchpad that supports SMBus/RMI4 mode but is not listed in
> smbus_pnp_ids[]. Without this entry, psmouse ignores the
> synaptics_intertouch parameter and falls back to PS/2 mode even when
> explicitly requested.
> 
> Adding LEN2058 to the passlist enables RMI4 over SMBus, which provides
> better multitouch support and matches the behavior of similar ThinkPad
> models already in the list (E480/LEN2054, E580/LEN2055).
> 
> Tested on ThinkPad E490 with kernel 7.0.5-zen1 and Arch Linux.
> 
> Signed-off-by: Nicolás Bazaes <contacto@xxxxxxxxx>
> Assisted-by: Claude <claude.ai>

Thank you for the patch. From checkpatch.pl:

WARNING: Assisted-by expects 'AGENT_NAME:MODEL_VERSION [TOOL1] [TOOL2]' format

Thanks.

-- 
Dmitry