Re: [PATCH v3] Bluetooth: hci_qca: disable power control for WCN7850 when bt_en is not defined

[Shuai Zhang]

Hi Luiz

On 3/25/2026 4:01 AM, Luiz Augusto von Dentz wrote:
> Hi Shuai,
>
> On Tue, Mar 24, 2026 at 6:33 AM Bartosz Golaszewski <brgl@xxxxxxxxxx> wrote:
> > On Tue, Mar 24, 2026 at 3:30 AM Shuai Zhang
> > <shuai.zhang@xxxxxxxxxxxxxxxx> wrote:
> > > On platforms using an M.2 slot with both UART and USB support, bt_en is
> > > pulled high by hardware. In this case, software-based power control
> > > should be disabled. The current platforms are Lemans-EVK and Monaco-EVK.
> > >
> > > Add QCA_WCN7850 to the existing condition so that power_ctrl_enabled is
> > > cleared when bt_en is not software-controlled (or absent), aligning its
> > > behavior with WCN6750 and WCN6855
> > >
> > > Signed-off-by: Shuai Zhang <shuai.zhang@xxxxxxxxxxxxxxxx>
> > > ---
> > Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
> Let's check if the following is true before I push it:
>
> https://sashiko.dev/#/patchset/20260324023016.3889062-1-shuai.zhang%40oss.qualcomm.com

The question raised by this check is whether |qca_power_shutdown()| 
properly considers WCN7850.
WCN7850 does not need any special handling and is intentionally covered 
by the default case in |qca_power_shutdown()|.


Thanks,

Shuai