1*4882a593SmuzhiyunWhat: Raise a uevent when a USB Host Controller has died 2*4882a593SmuzhiyunDate: 2019-04-17 3*4882a593SmuzhiyunKernelVersion: 5.2 4*4882a593SmuzhiyunContact: linux-usb@vger.kernel.org 5*4882a593SmuzhiyunDescription: When the USB Host Controller has entered a state where it is no 6*4882a593Smuzhiyun longer functional a uevent will be raised. The uevent will 7*4882a593Smuzhiyun contain ACTION=offline and ERROR=DEAD. 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun Here is an example taken using udevadm monitor -p:: 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun KERNEL[130.428945] offline /devices/pci0000:00/0000:00:10.0/usb2 (usb) 12*4882a593Smuzhiyun ACTION=offline 13*4882a593Smuzhiyun BUSNUM=002 14*4882a593Smuzhiyun DEVNAME=/dev/bus/usb/002/001 15*4882a593Smuzhiyun DEVNUM=001 16*4882a593Smuzhiyun DEVPATH=/devices/pci0000:00/0000:00:10.0/usb2 17*4882a593Smuzhiyun DEVTYPE=usb_device 18*4882a593Smuzhiyun DRIVER=usb 19*4882a593Smuzhiyun ERROR=DEAD 20*4882a593Smuzhiyun MAJOR=189 21*4882a593Smuzhiyun MINOR=128 22*4882a593Smuzhiyun PRODUCT=1d6b/2/414 23*4882a593Smuzhiyun SEQNUM=2168 24*4882a593Smuzhiyun SUBSYSTEM=usb 25*4882a593Smuzhiyun TYPE=9/0/1 26*4882a593Smuzhiyun 27*4882a593SmuzhiyunUsers: chromium-os-dev@chromium.org 28