Re: [PATCH] sound: usb: USB3 Super Speed patch

[Clemens Ladisch <clemens@ladisch.de>]

Paul Zimmerman wrote:
> This patch adds Super Speed support to the USB drivers under sound/. It adds
> tests for USB_SPEED_SUPER to all the places that check for the USB speed.

> +++ b/sound/usb/midi.c
> @@ -834,7 +834,8 @@ static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
> +++ b/sound/usb/misc/ua101.c
> +++ b/sound/usb/usx2y/us122l.c
> +++ b/sound/usb/usx2y/usb_stream.c

These devices do not support super speed.

> +++ b/sound/usb/pcm.c
> -	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
> +	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH &&
> +	    snd_usb_get_speed(subs->dev) != USB_SPEED_SUPER)
>  		/* full speed devices have fixed data packet interval */
>  		ptmin = 1000;

In places like this, it would be better to write something like
	if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
or
	if (snd_usb_get_speed(subs->dev) < USB_SPEED_HIGH)


Regards,
Clemens