Re: [PATCH 1/4] usb: hub_activate kill an 'else'

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On Mon, 23 Sep 2013, Dan Williams wrote:

> Remove a few extra lines and make it clear that all implementations
> disable the port by sharing the same line of code.
> 
> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
> ---
>  drivers/usb/core/hub.c |   11 ++++-------
>  1 files changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> index 5d859fc..69bbb51 100644
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -1107,16 +1107,13 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
>  			/*
>  			 * USB3 protocol ports will automatically transition
>  			 * to Enabled state when detect an USB3.0 device attach.
> -			 * Do not disable USB3 protocol ports.
> +			 * Do not disable USB3 protocol ports, just pretend
> +			 * power was lost
>  			 */
> -			if (!hub_is_superspeed(hdev)) {
> +			portstatus &= ~USB_PORT_STAT_ENABLE;
> +			if (!hub_is_superspeed(hdev))
>  				usb_clear_port_feature(hdev, port1,
>  						   USB_PORT_FEAT_ENABLE);
> -				portstatus &= ~USB_PORT_STAT_ENABLE;
> -			} else {
> -				/* Pretend that power was lost for USB3 devs */
> -				portstatus &= ~USB_PORT_STAT_ENABLE;
> -			}
>  		}
>  
>  		/* Clear status-change flags; we'll debounce later */

Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

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