number of /dev/usb nodes

[Chuck Robey]

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Hans Petter Selasky wrote:
> Hi,
> 
> I am about to set the following USB limits:
> 
> #define	USB_BUS_MAX 256			/* units */
> #define	USB_DEV_MAX 128			/* units */
> #define	USB_IFACE_MAX 32		/* units */
> #define	USB_EP_MAX (2*16)		/* hardcoded */
> #define	USB_FIFO_MAX (2 * USB_EP_MAX)
> 
> The multiplication product of (BUS*DEV*IFACE*FIFO) must fit within a 32-bit 
> unsigned integer.
> 
> Any objections ?
> 
> --HPS

I don't recognize what the USB_EP_MAX means ... Endpoints?  If so, I would
personally use a longer abbreviation, but that's a pretty weak objection.  The
rest is fine.  Where's this going?  usb.h?  Then the usb(4) man page probably
ought to show it also.
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