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When we are doing compliance test with xHCI, we found that if we enable CONFIG_USB_SUSPEND and plug in a bad device which causes over-current condition to the root port, software will not be noticed. The reason is that current code don't set hub->change_bits in hub_activate() when over-current happens, and then hub_events() will not check the port status because it thinks nothing changed. If CONFIG_USB_SUSPEND is disabled, the interrupt pipe of the hub will report the change and set hub->event_bits, and then hub_events() will check what events happened.In this case over-current can be detected. Signed-off-by: Shen Guang <shenguang10@gmail.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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.. | ||
buffer.c | ||
config.c | ||
devices.c | ||
devio.c | ||
driver.c | ||
endpoint.c | ||
file.c | ||
generic.c | ||
hcd-pci.c | ||
hcd.c | ||
hub.c | ||
hub.h | ||
Kconfig | ||
Makefile | ||
message.c | ||
notify.c | ||
otg_whitelist.h | ||
port.c | ||
quirks.c | ||
sysfs.c | ||
urb.c | ||
usb-acpi.c | ||
usb.c | ||
usb.h |