On Sat, May 20, 2006 at 10:50:22AM -0400, Alan Stern wrote:
> On Fri, 19 May 2006, Greg KH wrote:
> 
> > > For this reason I am suggesting a usb_intr_msg() function which is
> > > written as usb_bulk_msg() but with usb_fill_int_urb() instead of
> > > usb_fill_bulk_urb().
> > 
> > Take a look at how usb_fill_int_urb() and usb_fill_bulk_urb() are
> > defined, they are just simple "fill up the structure" functions, and are
> > not different.
> 
> That's not quite right.  There is an important difference between them: 
> interrupt URBs use the "interval" member.

Yeah, but for one-show interrupt messages, it's not really a big deal :)
Relying on the endpoint interval should be sufficient.  I have a device
here that wants this function (and for some reason I forgot all about
the bulk message working fine for interrupt messages), and I'll try it
out on Monday.

Heh, it's the driver I use in the tutorial I give, causing a horrible
hack in the driver, I'll be glad to get rid of that..

thanks,

greg k-h


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