Re: [PATCH v4 3/3] usb: xhci: plat: Facilitate using autosuspend for xhci plat devices

[Udipto Goswami <udipto.goswami@oss.qualcomm.com>]

On Mon, Aug 25, 2025 at 11:10 AM Krishna Kurapati PSSNV
<krishna.kurapati@oss.qualcomm.com> wrote:
>
>
>
> On 8/12/2025 11:25 AM, Krishna Kurapati wrote:
> > Allow autosuspend to be used by xhci plat device. For Qualcomm SoCs,
> > when in host mode, it is intended that the controller goes to suspend
> > state to save power and wait for interrupts from connected peripheral
> > to wake it up. This is particularly used in cases where a HID or Audio
> > device is connected. In such scenarios, the usb controller can enter
> > auto suspend and resume action after getting interrupts from the
> > connected device.
> >
> > Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
> > ---
> >   drivers/usb/host/xhci-plat.c | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> > index 5eb51797de32..dd57ffedcaa2 100644
> > --- a/drivers/usb/host/xhci-plat.c
> > +++ b/drivers/usb/host/xhci-plat.c
> > @@ -171,6 +171,7 @@ int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const s
> >               return ret;
> >
> >       pm_runtime_set_active(&pdev->dev);
> > +     pm_runtime_use_autosuspend(&pdev->dev);
> >       pm_runtime_enable(&pdev->dev);
> >       pm_runtime_get_noresume(&pdev->dev);
> >
>
> Hi Mathias,
>
>   Can you help provide your review on this patch.
>
Hi Krishna,

I think the email added for Mathias isn't correct.
Adding the correct one.

Thanks,
-Udipto