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From: Greg KH <gregkh@linuxfoundation.org>
To: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: linux-usb@vger.kernel.org, linux-media@vger.kernel.org,
	balbi@kernel.org, laurent.pinchart@ideasonboard.com,
	kernel@pengutronix.de
Subject: Re: [PATCH v2] usb: gadget: uvc: limit isoc_sg to super speed gadgets
Date: Sat, 22 Oct 2022 13:35:32 +0200	[thread overview]
Message-ID: <Y1PVhIGlh1uMR2i/@kroah.com> (raw)
In-Reply-To: <20221017221141.3134818-1-m.grzeschik@pengutronix.de>

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

  reply	other threads:[~2022-10-22 11:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-17 22:11 [PATCH v2] usb: gadget: uvc: limit isoc_sg to super speed gadgets Michael Grzeschik
2022-10-22 11:35 ` Greg KH [this message]
2022-10-25 19:25   ` Michael Grzeschik
2022-10-26 12:08     ` Greg KH

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