Hello.

On 31-12-2010 2:37, Sarah Sharp wrote:

quoted text
> USB 3.0 devices have a slightly different suspend sequence than USB
> 2.0/1.1 devices.  There isn't support for USB 3.0 device suspend yet, so
> make khubd leave autosuspend disabled for USB 3.0 hubs.

quoted text
> Signed-off-by: Sarah Sharp<sarah.a.sharp@linux.intel.com>
[...]

quoted text
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> index 8a5ea2b..aca1cce 100644
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -1288,8 +1288,13 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
>   	desc = intf->cur_altsetting;
>   	hdev = interface_to_usbdev(intf);
>
> -	/* Hubs have proper suspend/resume support */
> -	usb_enable_autosuspend(hdev);
> +	/* Hubs have proper suspend/resume support.  USB 3.0 device suspend
> +	 * is different than USB 2.0/1.1 device suspend, and unfortunately we
> +	 * don't support it yet.  So leave autosuspend disabled that for
                                                                 ^^^^ not 
needed here?

quoted text
> +	 * USB 3.0 hubs for now.
> +	 */
> +	if (!hub_is_superspeed(hdev))
> +		usb_enable_autosuspend(hdev);

WBR, Sergei
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