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What: Raise a uevent when a USB Host Controller has died
Date: 2019-04-17
KernelVersion: 5.2
Contact: linux-usb@vger.kernel.org
Description: When the USB Host Controller has entered a state where it is no
longer functional a uevent will be raised. The uevent will
contain ACTION=offline and ERROR=DEAD.
Here is an example taken using udevadm monitor -p::
KERNEL[130.428945] offline /devices/pci0000:00/0000:00:10.0/usb2 (usb)
ACTION=offline
BUSNUM=002
DEVNAME=/dev/bus/usb/002/001
DEVNUM=001
DEVPATH=/devices/pci0000:00/0000:00:10.0/usb2
DEVTYPE=usb_device
DRIVER=usb
ERROR=DEAD
MAJOR=189
MINOR=128
PRODUCT=1d6b/2/414
SEQNUM=2168
SUBSYSTEM=usb
TYPE=9/0/1
Users: chromium-os-dev@chromium.org
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