Re: [PATCH v2] wifi: ath12k: skip hardware rfkill setup on Microsoft Surface devices

[Baochen Qiang]

On 10/6/2026 2:27 PM, François Roux wrote:
> On the Microsoft Surface Pro 11 and Surface Laptop 7 (X1E80100), the
> WCN7850 hardware rfkill input reads as "radio off" and the OS has no
> way to control it. ath12k enables hardware rfkill handling, so Wi-Fi
> stays hard-blocked:
> 
>   iwd: Error bringing interface 4 up: Operation not possible due to RF-kill
> 
> ACPI platforms can opt out through ath12k_acpi_get_disable_rfkill(),
> but DT platforms cannot. A DT property was proposed for this and
> rejected, because it describes what the OS should do rather than the
> hardware. The suggested alternative was to handle these machines in
> the driver until a connector binding can describe a broken rfkill line.
> 
> Add a table of board compatibles and hardware revisions on which
> hardware rfkill is known to be unusable, and skip the rfkill setup
> there. Other affected machines then only need a new table entry.
> 
> Tested on a Surface Pro 11 (microsoft,denali) with next-20260929,
> booted with the unmodified mainline DTB: the interface is no longer
> blocked and connects. The Surface Laptop 7 entries (microsoft,romulus13
> and microsoft,romulus15) are based on reports from Jérôme de Bretagne
> and Dale Whinham. I have not tested them.
> 
> Link: https://lore.kernel.org/all/2ixwny6hzumlqmok5cjwutvtk7nzmx4t3dhxc44ao4l2u755pj@n6m7jyxf2o62/
> Suggested-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
> Assisted-by: LLM
> Signed-off-by: François Roux <franzelfranzel@xxxxxxxxx>

Reviewed-by: Baochen Qiang <baochen.qiang@xxxxxxxxxxxxxxxx>