Messages in this thread | | | Date | Sun, 01 Jun 2003 13:14:45 +0200 | From | Ruud Linders <> | Subject | Serial port numbering (ttyS..) wrong for 2.5.61+ |
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Since I tried the 2.5 kernel versions somewhere in the 2.5.6x range, I see rather odd port naming for the extra 4 serial ports on a PCI-card.
The first two are numered as ttyS14, ttyS15 while the last two are ttyS2 and ttyS3 ! I tried to find where these numbers are coming from but couldn't really find an obvious place in the various drivers/char/* or drivers/serial/* files.
Note that the ttyS14 port actually works so this seems only a bug in the numbering.
Regards, Ruud Linders
Kernel version 2.5.70 --------------------- dmesg: ====== Serial: 8250/16550 driver $Revision: 1.90 $ IRQ sharing enabled ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A ttyS14 at I/O 0xbc00 (irq = 21) is a 16550A <<<<<< 14 ???? ttyS15 at I/O 0xbc08 (irq = 21) is a 16550A <<<<<< ttyS2 at I/O 0xbc10 (irq = 21) is a 16550A ttyS3 at I/O 0xbc18 (irq = 21) is a 16550A
4-port PCI serial controller: ============================= # lspci -d 10b5:1077 -v 02:0b.0 Serial controller: PLX Technology, Inc. VScom 400 4 port serial adaptor (rev 02) (prog-if 00 [8250]) Subsystem: PLX Technology, Inc. VScom 400 4 port serial adaptor Flags: medium devsel, IRQ 21 Memory at de004000 (32-bit, non-prefetchable) [size=128] I/O ports at b800 [size=128] I/O ports at bc00 [size=32] I/O ports at c000 [size=8] Expansion ROM at <unassigned> [disabled] [size=2K]
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