Re: [PATCH v2 2/3] usb: gadget: uvc: remove delay usb status phase

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Hi Paul,

On 24/04/18 23:59, Paul Elder wrote:
> The completion of the usb status phase doesn't need to be delayed
> from uvc_function_set_alt to uvc_v4l2_streamon/off.
> Remove USB_GADGET_DELAYED_STATUS and usb_composite_setup_delay from
> these two, respectively.
> 
> Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> 	1. Remove delay usb status phase
> 
>  drivers/usb/gadget/function/f_uvc.c    | 3 ++-
>  drivers/usb/gadget/function/uvc_v4l2.c | 6 ------
>  2 files changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c
> index 9b63b28a1ee3..fa34dcbe1197 100644
> --- a/drivers/usb/gadget/function/f_uvc.c
> +++ b/drivers/usb/gadget/function/f_uvc.c
> @@ -361,7 +361,8 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt)
>  		memset(&v4l2_event, 0, sizeof(v4l2_event));
>  		v4l2_event.type = UVC_EVENT_STREAMON;
>  		v4l2_event_queue(&uvc->vdev, &v4l2_event);
> -		return USB_GADGET_DELAYED_STATUS;
> +
> +		return 0;
>  
>  	default:
>  		return -EINVAL;
> diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c
> index fdf02b6987c0..138d95b3b8d1 100644
> --- a/drivers/usb/gadget/function/uvc_v4l2.c
> +++ b/drivers/usb/gadget/function/uvc_v4l2.c
> @@ -206,12 +206,6 @@ uvc_v4l2_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
>  
>  	uvc->state = UVC_STATE_STREAMING;
>  
> -	/*
> -	 * Complete the alternate setting selection setup phase now that
> -	 * userspace is ready to provide video frames.
> -	 */
> -	uvc_function_setup_continue(uvc);
> -

We should also get rid of definition of uvc_function_setup_continue() as nobody else uses it.

>  	return 0;
>  }
>  
> 

-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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