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Re: [PATCH 3/4] cp210x: Store part number

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  Re: [PATCH 3/4] cp210x: Store part number Oliver Neukum <oneukum@suse.com> - 2015-07-27 11:30 +0200

#1192864 — Re: [PATCH 3/4] cp210x: Store part number

On Mon, 2015-07-27 at 08:50 +0200, Petr Tesarik wrote:
> I don't understand. While you're right that I copied this part from
> Sillicon Labs' driver without much thinking, and &spriv->bPartNumber
> can be used directly, I can't see any DMA on stack. FWIW
> cp210x_control_msg always allocates a buffer using kcalloc:
> 
>         buf = kcalloc(length, sizeof(__le32), GFP_KERNEL);
> /* ... */
>         result = usb_control_msg(serial->dev,
> usb_rcvctrlpipe(serial->dev, 0),
>                                  request, requesttype, value,
>                                  spriv->bInterfaceNumber, buf, size,
> timeout);
> 
> Is that what you mean?

Yes, sorry, that part wasn't so clear from the previous patch.

	Sorry
		Oliver


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