Hi Andrej,
On Fri, Mar 29, 2002 at 02:01:54PM +0300, Borsenkow Andrej wrote:
> > I'm not sure if this is a devfs or mips problem so I'm sending it
> > to both lists.
> >
> > I just compiled my own mips-kernel from oss.sgi.com:/cvs to get
> > devfs-support. Unfortunately there seems to be a problem with the
> > serial-driver at least in the linux_2_4 branch:
> >
> > SGI Zilog8530 serial driver version 1.00
> > devfs_register(ttyS): could not append to parent, err: -17
>
> This means that somebody else registered ttyS (and cua) before Zilog8530
> driver attempted to do it. The possible reason could be that driver
> calls tty_register_devfs itself in this case it must set
> TTY_DRIVER_NO_DEVFS flag to prevent the same nodes registered by
> tty_register_driver.
Yeah, but I think the serial ports should be placed under /dev/tts/* and
/dev/cua/*, shouldn't they?
Which driver could have registered /dev/ttyS? if I search the
kernel-sources under arch/mips I get
testserv (raoul) ~/linux_2_4/linux/arch/mips> find . -name \*.c | xargs grep
ttyS
./arc/arc_con.c: "ttyS",
./au1000/common/serial.c: printk("Testing ttyS%d (0x%04lx, 0x%04x)...\n",
state->line,
./au1000/common/serial.c: serial_driver.name = "ttyS";
./au1000/common/serial.c: printk(KERN_INFO "ttyS%02d%s at 0x%04lx
(irq = %d) is a %s\n",
./au1000/common/serial.c: printk(KERN_INFO "ttyS%02d at %s 0x%04lx (irq =
%d) is a %s\n",
./au1000/common/serial.c: name: "ttyS",
./au1000/pb1000/setup.c: strcat(argptr, " console=ttyS0,115200");
./au1000/pb1500/setup.c: strcat(argptr, " console=ttyS0,115200");
./baget/vacserial.c: serial_driver.name = "ttyS";
./baget/vacserial.c: printk(KERN_INFO "ttyS%02d%s at 0x%04x (irq =
%d) is a %s\n",
./baget/vacserial.c: name: "ttyS",
./baget/vacserial.c: autoconfig(info); /* autoconfigure ttyS0,
whatever that is */
./cobalt/setup.c:char arcs_cmdline[CL_SIZE] = { "console=ttyS0,115200
root=/dev/hda1" };
./dec/promcon.c: name: "ttyS",
./galileo-boards/ev64120/promcon.c: "ttyS",
./galileo-boards/ev64120/setup.c:char arcs_cmdline[CL_SIZE] = {
"console=ttyS0,115200 "
./galileo-boards/ev96100/setup.c: strcat(argptr, "
console=ttyS0,115200");
./ite-boards/generic/it8172_setup.c: strcat(argptr, "
console=ttyS0,115200");
./jmr3927/rbhma3100/setup.c: strcat(argptr, " console=ttyS1,115200");
./kernel/gdb-stub.c: * (gdb) target remote /dev/ttyS1
./mips-boards/atlas/atlas_setup.c: if ((argptr = strstr(argptr,
"console=ttyS0")) == NULL) {
./mips-boards/atlas/atlas_setup.c: strcpy(serial_console,
"ttyS0,");
./mips-boards/atlas/atlas_setup.c: if ((argptr = strstr(argptr,
"kgdb=ttyS")) != NULL) {
./mips-boards/atlas/atlas_setup.c: argptr += strlen("kgdb=ttyS");
./mips-boards/atlas/atlas_setup.c: printk("KGDB: Uknown
serial line /dev/ttyS%c, "
./mips-boards/atlas/atlas_setup.c: "falling back to
/dev/ttyS1\n", *argptr);
./mips-boards/atlas/atlas_setup.c: printk("KGDB: Using serial line
/dev/ttyS%d for session\n",
./mips-boards/atlas/atlas_setup.c: prom_printf("KGDB: Using serial
line /dev/ttyS%d for session, "
./mips-boards/malta/malta_setup.c: strcat(argptr, "
console=ttyS0,38400");
./mips-boards/malta/malta_setup.c: if ((argptr = strstr(argptr,
"kgdb=ttyS")) != NULL) {
./mips-boards/malta/malta_setup.c: argptr += strlen("kgdb=ttyS");
./mips-boards/malta/malta_setup.c: printk("KGDB: Uknown
serial line /dev/ttyS%c, "
./mips-boards/malta/malta_setup.c: "falling back to
/dev/ttyS1\n", *argptr);
./mips-boards/malta/malta_setup.c: printk("KGDB: Using serial line
/dev/ttyS%d for session\n",
./mips-boards/malta/malta_setup.c: prom_printf("KGDB: Using serial
line /dev/ttyS%d for session, "
./philips/nino/prom.c: strcpy(arcs_cmdline, "console=tty0
console=ttyS0,115200");
./sgi-ip22/ip22-setup.c: console_setup ("ttyS1");
./sgi-ip22/ip22-setup.c: console_setup ("ttyS0");
./sgi-ip22/ip22-setup.c: console_setup("ttyS0");
testserv (raoul) ~/linux_2_4/linux/arch/mips>
but I have not compiled support for arc console (when do you need that
btw?) and all other drivers do not apply to IP22 AFAIK.
My .config is attached below.
Regards
Raoul
config-2.4.18-cvs-mips-20020328
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