On Thu, Nov 03, 2011 at 10:47:16AM -0400, Nick Bowler wrote: > Hi folks, > > I'm using a PL2303-based USB ⇔ RS-232 adaptor (lsusb output appended). > However, when I try to send a break (using alt+F in minicom), it appears > that nothing at all happens. > > If I enable the debug printing in the driver, I see the following: > > pl2303_break_ctl - port 0 > pl2303_break_ctl - turning break on > pl2303_break_ctl - error sending break = -32 > pl2303_break_ctl - port 0 > pl2303_break_ctl - turning break off > pl2303_break_ctl - error sending break = -32 > > -32 would appear to be EPIPE. With the debugging disabled these errors > get dropped on the floor, hence everything seems normal except that > nothing happens when I send a break. The adaptor seems to work > fine otherwise. That means your device does not support the "set break" command, sorry. I suggest you use a "real" usb to serial device, and not this one, if you need to send a break with it. The pl2303 device is barely a workable serial device, in my opinion of working with it for years. There are many other better devices out there (like the ftdi_sio devices for one.) sorry, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
