Re: Driver for Microsoft USB Fingerprint Reader
From: Greg KH
Date: Mon Jul 03 2006 - 17:47:12 EST
A: No.
Q: Should I include quotations after my reply?
On Mon, Jul 03, 2006 at 04:53:43PM -0400, Daniel Bonekeeper wrote:
> hahahaha I wish I could... well, you are _always_ welcome to donate me
> yours ! =P
> I'll try more later to get one of those readers...
>
> Reading Greg's comment, now I'm in doubt if this should really be in
> kernel mode or at userspace. Since there is no standard (AFAIK) for
> those readers, how should it be done ?
It all depends on what you want the userspace interface to be.
> Another thing: where can I find documentation about the USB
> architecture ?
www.usb.org for the USB specs. See the kernel built-in documentation
for a full document on how the Linux USB layer works.
> For example, I suppose that some (or all) USB devices may have DMA
> capabilities... how is this done ?
Heh, no, USB can't do DMA at all. Why would you think they could? It's
a serial bus that just streams data across it at relativly slow speeds.
thanks,
greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/