Messages in this thread |  | | | Date | Fri, 2 Jun 2006 15:47:23 -0700 | | From | Pete Zaitcev <> | | Subject | Re: [PATCH RFC 0/11] usbserial: Serial Core port. |
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On Fri, 02 Jun 2006 11:03:29 +0100, David Woodhouse <dwmw2@infradead.org> wrote: > On Thu, 2006-06-01 at 23:48 -0700, Pete Zaitcev wrote: > > > > > The tests I've done so far weren't anything serious: as the mobile supports a > > > AT command set, I have used the ones (with minicom) which transfers more data. > > > Of course that I also did module load/unload tests, tried to disconnect the > > > device while it's transfering data and so on. > > > > Next, it would be nice to test if PPP works, and if getty and shell work > > (with getty driving the USB-to-serial adapter). > > xmodem is a good test -- better than PPP because it stresses the > buffering in a way which PPP won't. Log into a remote system, try > sending and receiving files with xmodem.
I understand. My intent was different, however. One of the bigger sticking points for usb-serial was its interaction with line disciplines, which are notorious for looping back and requesting writes from callbacks (e.g. h_hdlc.c). They are also sensitive to drivers lying about the amount of free space in their FIFOs. This is something you never test when driving a serial port from an application, no matter how cleverly written.
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