Hello, my USB controller sometimes dies when plugging a device (maybe because of static): [11197.529334] ehci-pci 0000:00:09.2: HC died; cleaning up [11197.529883] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.529893] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.530568] usb 1-1: USB disconnect, device number 7 [11197.531224] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.531278] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.532155] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.532203] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.539798] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.539865] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.540092] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.540109] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.541210] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.541285] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.553179] usb 1-2: USB disconnect, device number 3 [11197.554087] usb 1-4: USB disconnect, device number 4 [11197.580154] uhci_hcd 0000:00:09.0: FGR not stopped yet! [11197.943554] uhci_hcd 0000:00:09.0: host system error, PCI problems? [11197.943717] uhci_hcd 0000:00:09.0: host controller process error, something bad happened! [11197.943735] uhci_hcd 0000:00:09.0: host controller halted, very bad! [11197.943794] uhci_hcd 0000:00:09.0: HCRESET not completed yet! [11197.943809] uhci_hcd 0000:00:09.0: HC died; cleaning up rmmod & modprobe isn't enough to fix it. Reboot is needed to make it work again. Or something like this: #!/bin/sh rmmod ehci-pci rmmod uhci-hcd echo 1 >"/sys/bus/pci/devices/0000:00:09.0/remove" echo 1 >"/sys/bus/pci/devices/0000:00:09.1/remove" echo 1 >"/sys/bus/pci/devices/0000:00:09.2/remove" echo 1 >/sys/bus/pci/rescan modprobe uhci-hcd I'm not the only one affected by this problem: http://www.google.com/search?q=%22HC+died%3B+cleaning+up%22 Maybe the uhci/ehci drivers (or the USB core?) could reset the controller automatically to improve reliability. Looks like someone thought about this before but it was never implemented. There's a comment in ehci_handle_controller_death() function in drivers/usb/host/ehci-timer.c: /* Not in process context, so don't try to reset the controller */ The controller is: 00:09.0 USB controller [0c03]: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller [1106:3038] (rev 62) 00:09.1 USB controller [0c03]: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller [1106:3038] (rev 62) 00:09.2 USB controller [0c03]: VIA Technologies, Inc. USB 2.0 [1106:3104] (rev 65) -- Ondrej Zary
