0001 What: Raise a uevent when a USB Host Controller has died
0002 Date: 2019-04-17
0003 KernelVersion: 5.2
0004 Contact: linux-usb@vger.kernel.org
0005 Description: When the USB Host Controller has entered a state where it is no
0006 longer functional a uevent will be raised. The uevent will
0007 contain ACTION=offline and ERROR=DEAD.
0008
0009 Here is an example taken using udevadm monitor -p::
0010
0011 KERNEL[130.428945] offline /devices/pci0000:00/0000:00:10.0/usb2 (usb)
0012 ACTION=offline
0013 BUSNUM=002
0014 DEVNAME=/dev/bus/usb/002/001
0015 DEVNUM=001
0016 DEVPATH=/devices/pci0000:00/0000:00:10.0/usb2
0017 DEVTYPE=usb_device
0018 DRIVER=usb
0019 ERROR=DEAD
0020 MAJOR=189
0021 MINOR=128
0022 PRODUCT=1d6b/2/414
0023 SEQNUM=2168
0024 SUBSYSTEM=usb
0025 TYPE=9/0/1
0026
0027 Users: chromium-os-dev@chromium.org
