On Sun, Feb 12, 2017 at 05:45:06PM +0100, Wolfgang Schnitker wrote: > Dear serial developers, > > my suggestion is now following: > > My box has 3 physical serial IO ports, 1 on MB and 2 on PCI IO board. > > dmesg | grep ttyS shows this: > > (rmmod parport_serial and modprobe it again) > > [ 0.833923] 00:00: ttyS3 at I/O 0x2e8 (irq = 3, base_baud = 115200) > is a 16550A > [ 9.498473] 0000:03:00.0: ttyS0 at I/O 0xcc00 (irq = 17, base_baud = > 115200) is a 16550A > [ 9.519894] 0000:03:00.0: ttyS1 at I/O 0xc880 (irq = 17, base_baud = > 115200) is a 16550A > [ 17.519943] ttyS0: LSR safety check engaged! > [ 17.521182] ttyS0: LSR safety check engaged! > [ 30.043754] ttyS0: LSR safety check engaged! > [ 30.044734] ttyS0: LSR safety check engaged! > [ 30.044956] ttyS0: LSR safety check engaged! > [ 30.045153] ttyS0: LSR safety check engaged! > [ 30.045344] ttyS0: LSR safety check engaged! > [ 41.594802] ttyS0: LSR safety check engaged! > [ 273.130756] 0000:03:00.0: ttyS1 at I/O 0xcc00 (irq = 17, base_baud = > 115200) is a 16550A > [ 273.153032] 0000:03:00.0: ttyS2 at I/O 0xc880 (irq = 17, base_baud = > 115200) is a 16550A > > ttyS3 is on the MB, ttyS0/S1 are the one on he IO card. > > It happens right after activating LSR safety check. > > [ 16.522925] EXT4-fs (sda5): mounted filesystem with ordered data > mode. Opts: (null) > [ 16.552462] EXT4-fs (sda7): mounted filesystem with ordered data > mode. Opts: errors=remount-ro > [ 17.097626] systemd-journald[216]: Received request to flush runtime > journal from PID 1 > [ 17.519943] ttyS0: LSR safety check engaged! > [ 17.521182] ttyS0: LSR safety check engaged! > [ 17.523884] ------------[ cut here ]------------ > > So look up PCI values for this board: > > 03:00.0 Communication controller: MosChip Semiconductor Technology Ltd. > PCI 9835 Multi-I/O Controller (rev 01) > Subsystem: LSI Logic / Symbios Logic 1P2S > Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- > Stepping- SERR+ FastB2B- DisINTx- > Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- > <TAbort- <MAbort- >SERR- <PERR- INTx- > Interrupt: pin A routed to IRQ 17 > Region 0: I/O ports at cc00 [size=8] > Region 1: I/O ports at c880 [size=8] > Region 2: I/O ports at c800 [size=8] > Region 3: I/O ports at c480 [size=8] > Region 4: I/O ports at c400 [size=8] > Region 5: I/O ports at c080 [size=16] > Kernel driver in use: parport_serial > > > Please tell me, if you need more information. What exactly is the problem here? -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
