Re: [PATCH v2] usb: gadget: uvc: limit isoc_sg to super speed gadgets

Greg KH
2022-10-22T11:41:48Z

On Tue, Oct 18, 2022 at 12:11:41AM +0200, Michael Grzeschik wrote:
> The overhead of preparing sg data is high for transfers with limited
> payload. When transferring isoc over high-speed usb the maximum payload
> is rather small which is a good argument no to use sg. This patch is
> changing the uvc_video_encode_isoc_sg encode function only to be used
> for super speed gadgets.
>
> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
>
> ---
> v1 -> v2: - always setting mem and sg elements since now both is working in runtime

I'm guessing this is a "fix"? If so, what commit id is this a fix for?

And any reason you aren't cc:ing me on these patches?

thanks,

greg k-h