On Mon, Feb 25, 2008 at 09:18:12AM -0800, Chetan Karia wrote: > On 22/02/2008, Greg KH <[EMAIL PROTECTED]> wrote: > > On Fri, Feb 22, 2008 at 05:30:22PM -0800, Chetan Karia wrote: > > > On 22/02/2008, Greg KH <[EMAIL PROTECTED]> wrote: > > > > On Wed, Feb 20, 2008 at 10:35:48AM -0800, Chetan Karia wrote: > > > > > Hello, > > > > > > > > > > I am kernel newbie and I have a question about usb serial driver. I > > > > > have a usb to serial driver which exposes 3 virtual serial ports > > > > > ttyUSB0, ttyUSB1 and ttyUSB2. The endpoint to virtual serial port > > > > > mapping is like this > > > > > ep0 ==> ttyUSB0 > > > > > ep1 ==> ttyUSB1 > > > > > ep2 ==> ttyUSB2. > > > > > > > > > > > > Which device is this? I think you are talking about the endpoint > > > > "pairs" one IN and one OUT per tty, right? > > > > > > > Yes I am talking about endpoint per one IN and one OUT per tty. > > > > > > But what physical device is this? > > > This is the sierra wireless device.
Usually you use PPP over this kind of connection, by providing two read/write ports to it, you have the very large chance of messing up the ppp protocol, correct? What specifically are you trying to do in userspace that you need two reads or writes to do that is not working today? > We can write to a single port concurrently from 2 programs but can two > programs READ the same stream simultaneously? They can try, but things get very confusing very quickly :) thanks, greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
