Re: Break not functioning on pl2303 serial adaptor

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On 2011-11-03 08:35 -0700, Greg KH wrote:
> On Thu, Nov 03, 2011 at 10:47:16AM -0400, Nick Bowler wrote:
> >   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.)

OK, fair enough.

Perhaps this driver could print an error message to that effect, then,
instead of remaining completely silent?  If EPIPE means "not supported",
I can cook something up.

Is there a way to send sysrq commands over a serial console without
using break?

Thanks,
-- 
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
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