[PATCH v1] HSD #18028953892: usb: xhci-dwc3: Fix USB3.1 controller register access in reset state

[Bin Meng]

On Wed, Jun 21, 2023 at 10:11 PM Jit Loon Lim <jit.loon.lim at intel.com> wrote:
>
> From: Teik Heng Chong <teik.heng.chong at intel.com>
>
> The controller registers should not be accessed while the controller's
> vcc_reset_n is asserted.
>
> Signed-off-by: Teik Heng Chong <teik.heng.chong at intel.com>
> ---
>  drivers/usb/host/xhci-dwc3.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
> index 1dbd65dfaa..3172956bd6 100644
> --- a/drivers/usb/host/xhci-dwc3.c
> +++ b/drivers/usb/host/xhci-dwc3.c
> @@ -227,6 +227,11 @@ static int xhci_dwc3_probe(struct udevice *dev)
>  static int xhci_dwc3_remove(struct udevice *dev)
>  {
>         struct xhci_dwc3_plat *plat = dev_get_plat(dev);
> +       int ret;
> +
> +       ret = xhci_deregister(dev);
> +       if (ret)
> +               return ret;
>
>         dwc3_shutdown_phy(dev, &plat->phys);
>
> @@ -234,7 +239,7 @@ static int xhci_dwc3_remove(struct udevice *dev)
>
>         reset_release_bulk(&plat->resets);
>
> -       return xhci_deregister(dev);
> +       return 0;
>  }
>
>  static const struct udevice_id xhci_dwc3_ids[] = {

Please remove the HSD tag in the commit summary.

Regards,
Bin