Am Mittwoch, 6. August 2003 22:09 schrieb David Brownell:
> Alan Stern wrote:
> > David:
> >
> > A few things have come while planning my gadget driver.
> >
> > The gadgetfs API still looks a bit preliminary. Judging by the source,
> > there doesn't even appear to be any way to halt an endpoint! Anyway, I
> > decided not to use it; the performance penalties would make it a bad model
> > for this purpose in any case.
>
> Halt endpoints by doing a "wrong direction" I/O ... read from an IN endpoint
> (instead of writing to the host), or write to an OUT endpoint (instead of
> reading what it wrote). This idiom avoids use of ioctls, and makes use
> of a code path that would otherwise just return an error.
That is worse than an ioctl.
Read and write should transfer data, not change status of an io channel.
Regards
Oliver
-------------------------------------------------------
This SF.Net email sponsored by: Free pre-built ASP.NET sites including
Data Reports, E-commerce, Portals, and Forums are available now.
Download today and enter to win an XBOX or Visual Studio .NET.
http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01
_______________________________________________
[EMAIL PROTECTED]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
