вс, 4 дек. 2022 г. в 18:53, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > > 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? > I tried(each test 4 times, trying each device node for each port): 1) Execute "cat /dev/ttyS6"(or ttyS7), connect rs-232 cable to port on the card and to another PC, then send from another PC something to port. Result: nothing new appeared in console 2) Connect rs232 cable to port on card and to another PC. Run terminal on another PC, run minicom on this PC. Disable flow control. Send something to terminal on both PCs. Result: nothing appeared in terminals on both PCs. 3) Connect pins number 2 and 3 on rs232 port (loopback test). Open minicom, disable flow control and send something to the terminal. Result: nothing new appeared in the terminal 4) Connect pins number 2 and 3 on rs232 port (loopback test). Open first console window, run "cat /dev/ttyS6"(or ttyS7). Open second window, run "echo "test" > /dev/ttyS6"(or ttyS7). Result: nothing new appeared in the first console > > > > > "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? > I tried using both nodes, /dev/ttyS6 and /dev/ttyS7, and the result was the same. > What does the output of `find /dev/serial/` show? > /dev/serial/ /dev/serial/by-id /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if01 /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if03 /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if09 /dev/serial/by-path /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.9 /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.1 /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.3 And it doesn't changes when I remove or insert back this card. > thanks, > > greg k-h
