Loading...

XML

Word

Printable

Details

Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 5.2.0
Affects Version/s: 5.2.0 Beta1
Component/s: Serial Port
Labels:
None
Environment:
Red Hat Enterprise

Commits:
e0be9ed761e730bec7b26bcaba014f028f6340d0

Description

I have a PCI express card that provides serial ports. The new SysFS detection code in QtSerialPort doesn't appear to be able to detect them. Previous versions of QtSerialPort would enumerate them correctly.

Worked around it by disabling the macro around the sysfs detection code but looks like it would probably work if I added (targetPath.contains(QStringLiteral("pci")) in the detection block.

Listing from /sys/class/tty/ttyS*

[linville@host ~]$ ls -la /sys/class/tty/ttyS*
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS0 -> ../../devices/pnp0/00:04/tty/ttyS0
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS1 -> ../../devices/pnp0/00:05/tty/ttyS1
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS2 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS2
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS3 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS3
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS4 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS4
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS5 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS5
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS6 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS6
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS7 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS7
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS8 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS8
lrwxrwxrwx 1 root root 0 Nov 21 08:27 /sys/class/tty/ttyS9 -> ../../devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS9

Udevadm Output

[root@host linville]# udevadm info --name /dev/ttyS2 -a

  looking at device '/devices/pci0000:80/0000:80:02.0/0000:82:00.0/tty/ttyS2':
    KERNEL=="ttyS2"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/pci0000:80/0000:80:02.0/0000:82:00.0':
    KERNELS=="0000:82:00.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="serial"
    ATTRS{vendor}=="0x494f"
    ATTRS{device}=="0x10a9"
    ATTRS{subsystem_vendor}=="0x0000"
    ATTRS{subsystem_device}=="0x0000"
    ATTRS{class}=="0x070002"
    ATTRS{irq}=="56"
    ATTRS{local_cpus}=="ffffff"
    ATTRS{local_cpulist}=="0-23"
    ATTRS{modalias}=="pci:v0000494Fd000010A9sv00000000sd00000000bc07sc00i02"
    ATTRS{numa_node}=="-1"
    ATTRS{enable}=="1"
    ATTRS{broken_parity_status}=="0"
    ATTRS{msi_bus}==""

  looking at parent device '/devices/pci0000:80/0000:80:02.0':
    KERNELS=="0000:80:02.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="pcieport"
    ATTRS{vendor}=="0x8086"
    ATTRS{device}=="0x3c04"
    ATTRS{subsystem_vendor}=="0x0000"
    ATTRS{subsystem_device}=="0x0000"
    ATTRS{class}=="0x060400"
    ATTRS{irq}=="86"
    ATTRS{local_cpus}=="ffffff"
    ATTRS{local_cpulist}=="0-23"
    ATTRS{modalias}=="pci:v00008086d00003C04sv00000000sd00000000bc06sc04i00"
    ATTRS{numa_node}=="-1"
    ATTRS{enable}=="2"
    ATTRS{broken_parity_status}=="0"
    ATTRS{msi_bus}=="1"

  looking at parent device '/devices/pci0000:80':
    KERNELS=="pci0000:80"
    SUBSYSTEMS==""
    DRIVERS==""