Also, the exit function speakup_test_cleanup() needs to contain code from your module's exit function, if it is used as a kernel module, rather than being built into kernel image. On Thu, Dec 15, 2016 at 10:17 PM, Okash Khawaja <okash.khawaja@xxxxxxxxx> wrote: > Hi, > > I quickly put together speakup-test.c and compiled it into the kernel > binary. Loading the kernel outputs test messages to ttyS0 and logs the > event in kernel log. "got tty ffff8fcfe74b0000" message appears at time > 3.258357. Both speakup-test.c and dmesg.log are attached. N_SPEAKUP is 26 > in /include/uapi/linux/tty.h. > > Also tested this as kernel module which seemed to work fine too. That > required EXPORT_SYMBOL(tty_set_ldisc); in /drivers/tty/tty_ldisc.c. Will be > able to spend more time over the weekend. > > Thanks! > Okash > > On Sun, Dec 11, 2016 at 10:33 PM, Okash Khawaja <okash.khawaja@xxxxxxxxx> > wrote: > >> Hi Samuel, >> >> That's great. Let me get back on this soon as I can. >> >> Thanks, >> Okash >> >> > On 11 Dec 2016, at 20:22, Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> >> wrote: >> > >> > Hello, >> > >> > Okash Khawaja, on Sun 27 Nov 2016 20:41:50 +0000, wrote: >> >> Thanks for explanation. I have not been able to work on this recently >> - pulled >> >> away for something urgent. As soon as it's over, I'll be back on it. >> Probably >> >> third week of December. >> > >> > I've taken some time to have a look, I have attached the result: >> > >> > - tty_NULL is a patch against the kernel to make tty functions accept >> > being called with filp == NULL >> > - mymodule.tgz is a dumb module which opens ttyS0 (major 4 minor 64), >> > and writes to it through the tty write operation. >> > >> > So this, combined with your work on the line discipline, should get >> > something working, and opening other serial ports (e.g. ttyUSB0) is a >> > matter of changing the major/minor pair (e.g. 188, 0). >> > >> > Samuel >> > <mymodule.tgz> >> > <tty_NULL> >> > > _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
