[PATCH] usb: ehci-mx6: remove unnecessary regulator enable from probe

[Tim Harvey]

On Fri, May 19, 2023 at 11:59 AM Tim Harvey <tharvey at gateworks.com> wrote:
>
> Remove the regulator_set_enable() call from device probe which
> resolves a regulator imbalance. This is unnecessary as
> regulator_set_enable() will be called when ehci_register calls the
> init_after_reset hook.
>
> Suggested-by: Marek Vasut <marex at denx.de>
> Signed-off-by: Tim Harvey <tharvey at gateworks.com>
> ---
>  drivers/usb/host/ehci-mx6.c | 16 ----------------
>  1 file changed, 16 deletions(-)
>
> diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
> index fae20838c60a..a9ed5e7a0d53 100644
> --- a/drivers/usb/host/ehci-mx6.c
> +++ b/drivers/usb/host/ehci-mx6.c
> @@ -709,18 +709,6 @@ static int ehci_usb_probe(struct udevice *dev)
>                 goto err_regulator;
>  #endif
>
> -#if CONFIG_IS_ENABLED(DM_REGULATOR)
> -       if (priv->vbus_supply) {
> -               ret = regulator_set_enable(priv->vbus_supply,
> -                                          (type == USB_INIT_DEVICE) ?
> -                                          false : true);
> -               if (ret && ret != -ENOSYS) {
> -                       printf("Error enabling VBUS supply (ret=%i)\n", ret);
> -                       goto err_clk;
> -               }
> -       }
> -#endif
> -
>         if (priv->init_type == USB_INIT_HOST) {
>                 setbits_le32(&ehci->usbmode, CM_HOST);
>                 writel(mx6_portsc(priv->phy_type), &ehci->portsc);
> @@ -744,10 +732,6 @@ err_phy:
>         generic_shutdown_phy(&priv->phy);
>  err_regulator:
>  #endif
> -#if CONFIG_IS_ENABLED(DM_REGULATOR)
> -       if (priv->vbus_supply)
> -               regulator_set_enable(priv->vbus_supply, false);
> -#endif
>  err_clk:
>  #if CONFIG_IS_ENABLED(CLK)
>         clk_disable(&priv->clk);
> --
> 2.25.1
>

Hi Marek,

I think this goes in your tree. It got delegated to Stefano in
patchwork but I'm not sure why as you maintain USB.

best regards,

Tim