Hello!
I attached the problem occured with parport and devfs.
I don't exactly know where the problem in the parport source
is. If someone has a patch for it, I will test it.
Nico
# Loading the parport and parport_pc modules for my parallelport
flapp:/home/user/nico/gpm-1.19.3 # modprobe parport_pc
# is there an entry in /dev ?
flapp:/home/user/nico/gpm-1.19.3 # ls /dev/
. cdroms fb initctl mem ptmx root usb
.. console full input misc pts shm vc
.devfsd cpu gpmctl kmem null pty tty vcc
apm_bios discs ide log port random urandom zero
# What does the kernel message say ?
flapp:/home/user/nico/gpm-1.19.3 # dmesg | tail -n 14
usb.c: registered new driver hid
mice: PS/2 mouse device common for all mice
0x378: FIFO is 16 bytes
0x378: writeIntrThreshold is 7
0x378: readIntrThreshold is 7
0x378: PWord is 8 bits
0x378: Interrupts are ISA-Pulses
0x378: ECP port cfgA=0x10 cfgB=0x49
0x378: ECP settings irq=7 dma=1
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,ECP]
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
# Have a look what lp0 has been before
>From /usr/src/linux/Documentation/ :
6 char Parallel printer devices
0 = /dev/lp0 Parallel printer on parport0
1 = /dev/lp1 Parallel printer on parport1
# make our own device out of /dev
flapp:/ # mknod /lp0 c 6 0
# has anything happened ? No!
flapp:/ # ls /dev/
. cdroms fb initctl mem ptmx root usb
.. console full input misc pts shm vc
.devfsd cpu gpmctl kmem null pty tty vcc
apm_bios discs ide log port random urandom zero
# Use the printer the easiest way :)
flapp:/ # cat /tmp/* > lp0
# And now...
flapp:/ # ls /dev/
. cdroms fb initctl mem printers random urandom zero
.. console full input misc ptmx root usb
.devfsd cpu gpmctl kmem null pts shm vc
apm_bios discs ide log port pty tty vcc
# there is now the entry printers/0.
