On Sun, Dec 04, 2022 at 06:42:19PM +0200, Oleksii Hryhorovych wrote: > Hi. I have a problem with linux "serial" driver. I`m using a MosChip > 9901 based ExpressCard 34 dual rs-232 controller. When I plugged this > card into my PC, the system detected it, but when I tried to send or > read something from one of the ports, there was silence. Loopback test > also fails. On windows this card works perfectly, so this is not a > hardware issue. My kernel version is "5.15.78-1-MANJARO". How exactly are you trying to send data through the port? What command did you use and what was the result? > > "dmesg" output about this card: > > [64329.311478] pcieport 0000:00:1c.1: pciehp: Slot(1): Card present > [64329.311485] pcieport 0000:00:1c.1: pciehp: Slot(1): Link Up > [64329.442833] pci 0000:02:00.0: [9710:9901] type 00 class 0x070002 > [64329.442867] pci 0000:02:00.0: reg 0x10: [io 0x0000-0x0007] > [64329.442883] pci 0000:02:00.0: reg 0x14: [mem 0x00000000-0x00000fff] > [64329.442922] pci 0000:02:00.0: reg 0x20: [mem 0x00000000-0x00000fff] > [64329.443096] pci 0000:02:00.0: supports D1 D2 > [64329.443099] pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot D3cold > [64329.443402] pci 0000:02:00.1: [9710:9901] type 00 class 0x070002 > [64329.443434] pci 0000:02:00.1: reg 0x10: [io 0x0000-0x0007] > [64329.443451] pci 0000:02:00.1: reg 0x14: [mem 0x00000000-0x00000fff] > [64329.443495] pci 0000:02:00.1: reg 0x20: [mem 0x00000000-0x00000fff] > [64329.443679] pci 0000:02:00.1: supports D1 D2 > [64329.443683] pci 0000:02:00.1: PME# supported from D0 D1 D2 D3hot D3cold > [64329.443948] pci 0000:02:00.0: BAR 1: assigned [mem 0xd0000000-0xd0000fff] > [64329.443960] pci 0000:02:00.0: BAR 4: assigned [mem 0xd0001000-0xd0001fff] > [64329.443969] pci 0000:02:00.1: BAR 1: assigned [mem 0xd0002000-0xd0002fff] > [64329.443979] pci 0000:02:00.1: BAR 4: assigned [mem 0xd0003000-0xd0003fff] > [64329.443987] pci 0000:02:00.0: BAR 0: assigned [io 0x2000-0x2007] > [64329.443995] pci 0000:02:00.1: BAR 0: assigned [io 0x2008-0x200f] > [64329.444006] pcieport 0000:00:1c.1: PCI bridge to [bus 02-22] > [64329.444012] pcieport 0000:00:1c.1: bridge window [io 0x2000-0x3fff] > [64329.444017] pcieport 0000:00:1c.1: bridge window [mem > 0xd0000000-0xd3ffffff] > [64329.444023] pcieport 0000:00:1c.1: bridge window [mem > 0xbfb00000-0xbfcfffff 64bit pref] > [64329.444110] serial 0000:02:00.0: enabling device (0000 -> 0003) > [64329.444690] 0000:02:00.0: ttyS6 at I/O 0x2000 (irq = 17, base_baud > = 115200) is a 16550A > [64329.448040] serial 0000:02:00.1: enabling device (0000 -> 0003) > [64329.452843] 0000:02:00.1: ttyS7 at I/O 0x2008 (irq = 18, base_baud > = 115200) is a 16550A Which tty device node are you using here? What does the output of `find /dev/serial/` show? thanks, greg k-h
