[Linux-parport] NetMos nm9855 patch

[Joerg Wunsch]

I tried to hack up a 2.6.8-24 kernel to recognize my NetMos 9855
serial ports that way.  The ports are now recognized appropriately:

(DEBUG_AUTOCONF in uart8250.c already turned on)

May 19 10:59:02 sv10drdev kernel: ACPI: PCI interrupt 0000:02:08.0[A] -> GSI 9 (level, low) -> IRQ 9
May 19 10:59:02 sv10drdev kernel: PCI parallel port detected: 9710:9745, I/O at 0xb800(0x0)
May 19 10:59:02 sv10drdev kernel: parport1: PC-style at 0xb800 [PCSPP,TRISTATE,EPP]
May 19 10:59:02 sv10drdev kernel: lp1: using parport1 (polling).
May 19 10:59:02 sv10drdev kernel: ttyS4: autoconf (0xb000, 0x0000000000000000): iir=3 iir1=6 iir2=6 type=16550A
May 19 10:59:02 sv10drdev kernel: ttyS4 at I/O 0xb000 (irq = 9) is a 16550A
May 19 10:59:02 sv10drdev kernel: ttyS5: autoconf (0xac00, 0x0000000000000000): iir=3 iir1=6 iir2=6 type=16550A
May 19 10:59:02 sv10drdev kernel: ttyS5 at I/O 0xac00 (irq = 9) is a 16550A
May 19 10:59:02 sv10drdev kernel: ttyS6: autoconf (0xa800, 0x0000000000000000): iir=3 iir1=6 iir2=6 type=16550A
May 19 10:59:02 sv10drdev kernel: ttyS6 at I/O 0xa800 (irq = 9) is a 16550A
May 19 10:59:02 sv10drdev kernel: ttyS7: autoconf (0xa400, 0x0000000000000000): iir=3 iir1=6 iir2=6 type=16550A
May 19 10:59:02 sv10drdev kernel: ttyS7 at I/O 0xa400 (irq = 9) is a 16550A

Anyway, all my access attempts to ttyS4 through ttyS7 yield an EIO.

Does anyone have an idea where to continue debugging this?
-- 
cheers, J"org Wunsch

Contractor for Atmel Dresden, Germany
Never trust an operating system you don't have sources for. ;-)