Similar question, but nobody answer: http://mail.nl.linux.org/kernelnewbies/2007-10/msg00007.html And here I tried: mknod /dev/ttytiny c 240 1 echo "ff" > /dev/ttytiny bash: /dev/ttytiny: No such device or address insmod tiny_serial.ko echo "ff" > /dev/ttytiny bash: echo: write error: Input/output error dmesg | tail [29920.028295] Tiny serial driver loaded [29920.028305] Tiny serial driver loadedgggg [29920.028332] Tiny serial driver loadedeeee [29920.028335] result=0 It got loaded alright, but what is the supposed behavior of >/dev/tty? On Tue, Jul 15, 2008 at 4:00 AM, Sébastien Chrétien <chretien@xxxxxxxxxx> wrote: > > Hello, > > I am learning to implemant a uart_driver. And I use your file > "tiny_serial.c". > Thank you for your work. > But when I try your module, an errors occurs when I try : echo "Hello World" >> /dev/ttytiny0 > input/output error. > > Can you help me to fix this ? > > I use kernel 2.6.25. > > Thanks > Sébastien Chrétien > > > -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ